Updated on 2021/04/08

写真a

 
KATAYAMA, Masaaki
 
Organization
Nagoya University Institute of Materials and Systems for Sustainability Division of Systems Research (DS) Professor
Title
Professor
Contact information
メールアドレス
External link

Degree 1

  1. Ph.D (Engineering) ( 1986.3   Osaka University ) 

Research Areas 3

  1. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering  / Wireless Communication Systems

  2. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Control and system engineering  / Remote Control

  3. Informatics / Information network  / Wireless Communication Networks

Current Research Project and SDGs 6

  1. Sensor/Control networks for CO2 reduction

  2. Robust Reliable Remote Controls of Industrial Machines

  3. Under Water Wireless Communication Systems

  4. Information Systems with Optical Wireless Communications for Visually Handicapped Persons

  5. Power Line Communcation Systems

  6. Low Earth-Orbital Satellite Communication Systems

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Research History 15

  1. Nagoya University   Institute of Materials and Systems for Sustainability   Professor

    2016.10

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    Country:Japan

  2. Nagoya University   Institute of Materials and Systems for Sustainability   Vice-Director

    2015.10 - 2016.3

  3. Nagoya University   EcoTopia Science Institute   Vice-Director

    2012.4 - 2015.9

  4. Nagoya University   Green Mobility Collaborative Research Center   Professor

    2011.7 - 2016.3

  5. Professor of the Division of Integrated Projects,EcoTopia Science Institute Nagoya University, Japan.

    2010.11 - 2015.9

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    Country:Japan

  6. Professor of Information and Communication Sciences, EcoTopia Science Institute Nagoya University, Japan.

    2005.4 - 2015.9

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    Country:Japan

  7. Professor of Division of Information and Communication Sciences, EcoTopia Science Institute Nagoya University, Japan.

    2004.4 - 2005.3

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    Country:Japan

  8. Nagoya University   Graduate School of Engineering Information and Communication Engineering   Professor

    2001.7

  9. Nagoya University   School of Engineering   Professor

    2001.7

  10. Professor of the Center for Information Media Studies at Nagoya University, Japan

    2001.7 - 2003.3

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    Country:Japan

  11. Associate Professor Department of Information Electronics, Graduate School of Engineering, Nagoya University, Japan

    1997.4 - 2001.6

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    Country:Japan

  12. Associate Professor of the Department of Information Electronics at Nagoya University, Japan

    1993.10 - 1997.3

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    Country:Japan

  13. Associate Professor of the Department of Information Electronics at Nagoya University, Japan

    1992.4 - 1993.9

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    Country:Japan

  14. Lecturer of Osaka University, Japan

    1989.4 - 1992.3

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    Country:Japan

  15. Assistant Professor at Toyohashi University of Technology, Japan

    1986.4 - 1989.3

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    Country:Japan

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Education 2

  1. Osaka University   Graduate School, Division of Engineering

    - 1986

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    Country: Japan

  2. Osaka University   Faculty of Engineering

    - 1981

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    Country: Japan

Professional Memberships 9

  1. Fellow of The Institute of Electronics, Information and Communication Engineers   Chair of Tokai Section

    2012.5 - 2013.5

  2. Senior Member of The Institute of Electrical and Electronics Engineers

  3. the Institute of Electronics, Information and Communication Engineers   Chair of T.C. on Reliable Communication and Control

    2014.4 - 2016.5

  4. the Institute of Electronics, Information and Communication Engineers   Chair of T.C. on Robust Reliable Radio Control

    2012.5 - 2014.3

  5. the Institute of Electronics, Information and Communication Engineers   Vice Chair of T.C. on Wide Band Systems

    2006.5 - 2007.4

  6. the Institute of Electronics, Information and Communication Engineers   Vice Chair of T.C. on Wide Band Systems

    2003.5 - 2005.4

  7. The Institute of Electrical and Electronics Engineers   Counselor, IEEE Student Branch at Nagoya University,

    2005.1

  8. the Institute of Electronics, Information and Communication Engineers   Member of Technical Comittee on Reliable Communication and Control

    2014.4

  9. the Institute of Electronics, Information and Communication Engineers   Member of T.C. on Wide Band Systems

    2007.5

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Committee Memberships 1

  1. Institute of Electrical and Electronics Engineers   Nagoya Section Chair  

    2021.1 - 2022.12   

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    Committee type:Academic society

Awards 8

  1. Fellow of The Institute of Electronics, Information and Communication Engineers

    2008.9   The Institute of Electronics, Information and Communication Engineers  

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    Country:Japan

  2. 2012 Outstanding Service Award

    2012.3   IEEE Communication Society Techical Committee on Power Line Communications  

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    Country:United States

  3. "Commendation by Director-General of TOKAI Bureau of Telecommunications,the 56th Radio Day(June 1,2006)"

    2019.6   Director-General of TOKAI Bureau of Telecommunications  

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    Country:Japan

  4. "Commendation by Director-General of TOKAI Bureau of Telecommunications,the 56th Radio Day(June 1,2006)"

    2006.6   Director-General of TOKAI Bureau of Telecommunications  

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    Country:Japan

  5. 電子情報通信学会通信ソサイエティー功労感謝状[3回目]

    2006.9   電子情報通信学会通信ソサイエティー  

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    Country:Japan

  6. 電子情報通信学会通信ソサイエティー功労感謝状[2回目]

    2001.9   電子情報通信学会通信ソサイエティー  

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    Country:Japan

  7. 電子情報通信学会通信ソサイエティー功労感謝状

    1996.9   電子情報通信学会通信ソサイエティー  

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    Country:Japan

  8. 電子通信学会篠原記念学術奨励賞

    1986.3   電子通信学会(電子情報通信学会)  

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    Country:Japan

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Papers 387

  1. Experimental Evaluation of Indoor Optical Wireless MIMO Systems With Square and Linear Array Constellations Reviewed International journal

    Nakamura Tetsuya, Ben Naila Chedlia, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEEE PHOTONICS JOURNAL   Vol. 13 ( 1 )   2021.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/JPHOT.2021.3050499

    Web of Science

    Other Link: https://ieeexplore.ieee.org/document/9320549

  2. Flight Model Using Voronoi Tessellation for a Delay-Tolerant Wireless Relay Network Using Drones Reviewed International journal

    Asano Hiroyuki, Okada Hiraku, Ben Naila Chedlia, Katayama Masaaki

    IEEE ACCESS   Vol. 9   page: 13064 - 13075   2021.1

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/ACCESS.2021.3051913

    Web of Science

    Other Link: https://ieeexplore.ieee.org/document/9326294

  3. Rebounding Flight with Rebounding Rate in a Wireless Relay Network Using Drones Reviewed

    H. Asano, H. Okada, C. Ben Naila, M. Katayama

      Vol. J103-B ( 12 ) page: 679 - 683   2020.12

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    Authorship:Last author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.14923/transcomj.2020JBL4004

    Other Link: http://hdl.handle.net/2237/33175

  4. Flight Models in Wireless Relay Networks Using Drones for Large-Scale Disasters Reviewed

      Vol. J103-B ( 2 ) page: 57 - 66   2020.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.14923/transcomj.2019GTP0015

    Other Link: http://hdl.handle.net/2237/31430

  5. A Controller Design Method Considering the Influence of Packet Loss as a Control-dependent Disturbance Reviewed

    Ogura Takashi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEEJ Transactions on Electronics, Information and Systems   Vol. 140 ( 2 ) page: 212-218   2020.2

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    <p>This paper proposes a controller design method to reduce deterioration of control quality such as instability and degradation of response performance (transient and steady-state responses, etc.) due to packet loss in wireless control systems. In our proposed method, the influence of packet loss to control systems is considered as a disturbance which is an external input causing deterioration of control quality. The proposed method can keep stability and reduce degradation of response performance even if packet loss occurs by considering the characteristics from a disturbance (an external input) to outputs in control design. In particular, this paper clarifies that the influence of packet loss can be modeled as a control-dependent disturbance, and proposes a controller design method that uses this dependency in controller design and does not depend on packet loss rate. Numerical simulation shows advantages of the proposed controller through comparisons with conventional controllers of existing researches.</p>

    DOI: 10.1541/ieejeiss.140.212

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  6. Optical Wireless CDMA Receiver with Hard Limiters and Successive Interference Cancellers Reviewed

    Ito Shuto, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2019 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS)     page: .   2019

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    Language:English  

    Web of Science

  7. Adaptive transmission probability for CSMA/CA-based consensus control of multi-agent systems Reviewed

    Kobayashi Kentaro, Noro Shunsuke, Okada Hiraku, Katayama Masaaki

    IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 9 ) page: 393 - 398   2019

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/comex.2019XBL0092

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  8. Performance of synchronous CDMA for the PLC-based remote multi-machine control Reviewed

    Hasegawa Mitsuru, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 10 ) page: 410 - 415   2019

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/comex.2019XBL0097

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  9. Overlaying a motion video with data information for digital signage and image-sensor-based visible light communication systems Reviewed

    Okada Hiraku, Yoshida Shota, Wada Tadahiro, Kobayashi Kentaro, Katayama Masaaki

    IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 8 ) page: 323 - 328   2019

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/comex.2019XBL0069

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  10. Influence of packet loss on wireless feedback control systems as a disturbance Reviewed

    Ogura Takashi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEICE COMMUNICATIONS EXPRESS   Vol. 8 ( 7 ) page: 257 - 262   2019

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/comex.2019XBL0060

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  11. Guaranteed Time Slot Allocation for IEEE 802.15.4-Based Wireless Feedback Control Systems Reviewed International journal

    Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEEE ACCESS   Vol. 7   page: 161211 - 161219   2019

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/ACCESS.2019.2951597

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  12. Preventing Degradation of the Quality of Visual Information in Digital Signage and Image-Sensor-Based Visible Light Communication Systems Reviewed

    Okada Hiraku, Sato Sho, Wada Tadahiro, Kobayashi Kentaro, Katayama Masaaki

    IEEE PHOTONICS JOURNAL   Vol. 10 ( 3 )   2018.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/JPHOT.2018.2829146

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  13. A Cross-Layer Optimized Receiver Design for Wireless Feedback Control Systems Reviewed

    Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEEE TRANSACTIONS ON COMMUNICATIONS   Vol. 66 ( 1 ) page: 320-329   2018.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TCOMM.2017.2751472

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  14. Combination of a Wireless Sensor Network and Drone Using Infrared Thermometers for Smart Agriculture Reviewed

    Moribe Tomoya, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2018 15TH IEEE ANNUAL CONSUMER COMMUNICATIONS & NETWORKING CONFERENCE (CCNC)     page: .   2018

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  15. Flight Schemes Considering Breaks for Wireless Relay Networks Using Drones during Large-Scale Disasters Reviewed

    Yanai Hiroki, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2018 IEEE 88TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-FALL)     page: .   2018

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    Language:English  

    Web of Science

  16. Modeling of sub-GHz wave propagation in factories for reliable wireless communication Reviewed

    Ozawa Hisashi, Fujimoto Takuya, Katayama Masaaki

    2018 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT)     page: 1598-1603   2018

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    Web of Science

  17. Link Quality Information Sharing by Compressed Sensing and Compressed Transmission for Arbitrary Topology Wireless Mesh Networks Reviewed

    Okada Hiraku, Suzaki Shuhei, Kato Tatsuya, Kobayashi Kentaro, Katayama Masaaki

    IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E100B ( 3 ) page: 456 - 464   2017.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transcom.2016EBP3122

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  18. H-Infinity Control Design Considering Packet Loss as a Disturbance for Networked Control Systems Reviewed

    Ogura Takashi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   Vol. E100A ( 2 ) page: 353 - 360   2017.2

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1587/transfun.E100.A.353

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  19. A Cross-layer Design of Optimized Receiver for Wireless State Feedback Control Reviewed

    Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2017 IEEE 18TH INTERNATIONAL WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS (SPAWC)     page: .   2017

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    Web of Science

  20. Selective Transmission of Control Information Based on Channel Periodicity in PLC-based Multiple-machine Control Reviewed

    Sawada Shun, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2017 IEEE INTERNATIONAL SYMPOSIUM ON POWER LINE COMMUNICATIONS AND ITS APPLICATIONS (ISPLC)     page: .   2017

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    Web of Science

  21. A Study on Variable Length Channel Coding for State Feedback in Wireless Control Systems Reviewed

    Miwa Yosuke, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2017 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC)     page: .   2017

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    Web of Science

  22. A Study on Multiple Access Schemes for Wireless Control over the IEEE 802.15.4 Beacon-enabled Mode Reviewed

    Uematsu Yushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2017 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC)     page: .   2017

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    Web of Science

  23. A simple channel tracking scheme using deductive combining for MIMO-OFDM WLANs Reviewed

    Asai Yusuke, Mashino Jun, Sugiyama Takatoshi, Katayama Masaaki

    IEICE COMMUNICATIONS EXPRESS   Vol. 6 ( 7 ) page: 429 - 434   2017

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    DOI: 10.1587/comex.2017XBL0043

    Web of Science

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  24. Performance Evaluation of an Improved Multiband Impulse Radio UWB Communication System Based on Sub-Band Selection Reviewed International coauthorship

    Qi Lin, Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   Vol. E99A ( 7 ) page: 1446 - 1454   2016.7

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    DOI: 10.1587/transfun.E99.A.1446

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  25. A study on h-infinity controller design considering the influence of packet loss as a disturbance Reviewed

    Ogura Takashi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY     page: 6013-6018   2016

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    Web of Science

  26. A Study on a Source Coding Scheme Considering the Importance of Control Data for Wireless Feedback Control Systems Reviewed

    Nagata Atsushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY     page: 6007-6012   2016

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  27. Visible Light Communication Systems Using Blue Color Difference Modulation for Digital Signage Reviewed

    Sato Sho, Okada Hiraku, Kobayashi Kentaro, Yamazato Takaya, Katayama Masaaki

    2016 IEEE 27TH ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC)     page: 1219-1224   2016

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    Web of Science

  28. A Study on Time Division Multiple Access Scheme based on Predicted Tracking Error for Wireless Feedback Control of Multiple Plants Reviewed

    Kimura Shota, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    PROCEEDINGS OF THE IECON 2016 - 42ND ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY     page: 6019-6024   2016

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    Web of Science

  29. Error-Rate Performance of Asynchronous Wireless Optical CDMA System Using a Hard Limiter for Noise Environment Reviewed

    Yamamoto Yusuke, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Transactions of the Institute of Systems, Control and Information Engineers   Vol. 29 ( 6 ) page: 242-249   2016

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    <p>This study considers a data collection system using optical space communication technology. The transmitters of the system asynchronously send their data to a base station using optical CDMA strategy. Because of different propagation characteristics, the intensity of the optical signals may not be the same at the base station. In this paper, we introduce a hard limiter to reduce the influence of this variation of signal intensity to the communication performance. The numerical results derived by computer simulation show the performance improvement by the introduction of a hard limiter,but for the improvement, it is required the threshold of the HL is optimized.</p>

    DOI: 10.5687/iscie.29.242

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  30. ON-OFF Error Control Coding Scheme for Minimizing Tracking Error in Wireless Feedback Control Systems Reviewed

    S. Hattori, K. Kobayashi, H. Okada, M. Katayama

      Vol. 11 ( 6 ) page: 1411 - 1421   2015.12

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    Authorship:Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1109/TII.2015.2489185

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  31. An Analyzing Method Using Self-Organizing Map for MIMO Mesh Networks Reviewed

        page: pp.37-41   2015.10

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  32. Area Transmission Efficiency of Single-User and Multi-User MIMO in Grid-Topology Wireless Mesh Networks Reviewed

        page: pp.1-5   2015.5

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    DOI: 10.1109/VTCSpring.2015.7145710

  33. Joint Random Network and Multi-Route Coding for Information Advertisement in Wireless Mesh Networks Reviewed

    Y. Sugao, H. Okada, K. Kobayashi, M. Katayama

      Vol. vol.J98-B ( no.4 ) page: pp.373-382   2015.4

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  34. Predictive Control for Performance Improvement of a Feedback Control System using Cyclostationary Channels Reviewed

    C. Carrizo, K. Kobayashi, H. Okada, M. Katayama

      Vol. E98A ( 4 ) page: 1000 - 1005   2015.4

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    DOI: 10.1587/transfun.E98.A.1000

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  35. Cooperative Repeaters to Improve Data Collection in Low Power Generation for Solar-powered Wireless Sensor Networks Reviewed

        page: pp.361-366   2015.1

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    DOI: 10.1109/CCNC.2015.7158003

  36. Construction of a Node-combined Wireless Network for Large-scale Disasters Reviewed

        page: pp.219-224   2015.1

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    DOI: 10.1109/CCNC.2015.7157980

  37. Experimental Evaluation of a Distributed Sensor Network Applying Source Node Grouping Reviewed

    Ishikawa Yohsuke, Okada Hiraku, Naito Katsuhiro, Kobayashi Kentaro, Katayama Masaaki

    PROCEEDINGS OF 2015 THIRD INTERNATIONAL SYMPOSIUM ON COMPUTING AND NETWORKING (CANDAR)     page: 283-286   2015

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    DOI: 10.1109/CANDAR.2015.33

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  38. An Information Sharing Method Using Compressed Sensing in Wireless Distributed Networks Reviewed

        page: pp.345-349   2014.12

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    DOI: 10.1109/GLOCOMW.2014.7063441

  39. Compressed Sensing and Compressed Transmission Methods for Information Gathering of Link Quality in Wireless Distributed Networks Reviewed

    S. Suzaki, H. Okada, K. Kobayashi, M. Katayama

      Vol. vol.J97-B ( no.10 ) page: pp.939-948   2014.10

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  40. Mutual Information Evaluation and Optimization of Intermittent Transmission Methods in Energy Harvesting Wireless Sensor Networks Reviewed

    X. Fan, H. Okada, K. Kobayashi, M. Katayama

      Vol. E97B ( 9 ) page: 1826 - 1834   2014.9

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    DOI: 10.1587/transcom.E97.B.1826

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  41. Performance analysis on the influence of the delay of the relayed signal in a piggyback spectrum sharing system Reviewed

    J. Naganawa, K. Kobayashi, H. Okada, M. Katayama

      Vol. vol.J97-B ( no.7 ) page: pp.525-535   2014.7

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  42. Spectrum Sharing Overlay System with a Repeater for the Primary Signal Reviewed

    J. Naganawa, K. Kobayashi, H. Okada, M. Katayama

      Vol. E97A ( 7 ) page: 1576 - 1586   2014.7

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    DOI: 10.1587/transfun.E97.A.1576

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  43. Switching Methods for Semi-Fixed Rate Control in IEEE 802.11n Wireless Mesh Networks Reviewed

        page: SP1-I.4 pp.150-154   2014.5

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  44. A symbol mapping scheme for a secondary signal in piggyback spectrum sharing with relay of a primary signal Reviewed

    J. Naganawa, K. Kobayashi, H. Okada, M. Katayama

      Vol. vol.J97-A ( no.2 ) page: pp.112-115   2014.2

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  45. A Symbol Mapping Scheme for a Secondary Signal in Piggyback Spectrum Sharing with Relay of a Primary Signal Reviewed

    NAGANAWA Jun, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    The Transactions of the Institute of Electronics, Information and Communication Engineers. A   Vol. 97 ( 2 ) page: 112 - 115   2014.2

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    Authorship:Lead author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers  

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  46. A Study on the Reduction of Synchronization Error using a Relay of Predictive Control Information in Wireless Control of Multiple Plants Reviewed

        2013.12

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    DOI: 10.1109/SII.2013.6776662

  47. A Note on Adaptive Coding Scheme for Minimizing Tracking Error in Wireless Feedback Control Systems Reviewed

        page: TP1-I.4 pp.867-872   2013.12

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    DOI: 10.1109/SII.2013.6776661

  48. Cooperative Automatic Parking System Based on Consensus Control with Mutual Exclusion Mechanism Reviewed

    N. Noto, H. Okuda, Y. Tazaki, T. Suzuki, S. Hayakawa, S. Mita, M. Katayama, G. Obinata

      Vol. vol.49 ( no.11 ) page: pp.986-993   2013.11

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  49. A Note on Adaptive Coding Scheme for Improvement of Reference Tracking in Wireless Feedback Control systems Reviewed

        page: pp.4438-4443   2013.11

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    DOI: 10.1109/IECON.2013.6699850

  50. Maximum likelihood receiver using state observer for wireless feedback control systems Reviewed

    K. Kobayashi, H. Okada, M. Katayama

      Vol. vol.J96-A ( no.11 ) page: pp.745-755   2013.11

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  51. Maximum Likelihood Receiver Using State Observer for Wireless Feedback Control Systems Reviewed

    KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    The Transactions of the Institute of Electronics, Information and Communication Engineers. A   Vol. 96 ( 11 ) page: 745 - 755   2013.11

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    Authorship:Last author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Institute of Electronics, Information and Communication Engineers  

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  52. Feedback Control Scheme with Prediction for Power Line Communication Channels Reviewed

        page: pp.289-293   2013.10

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    DOI: 10.1109/SmartGridComm.2013.6687972

  53. Ultra-Compact Bird-Borne S-band Transceiver Aiming to Search Low Pathogenic Avian Influenza Reviewed

        page: pp.497-501   2013.10

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    DOI: 10.1109/HealthCom.2013.6720727

  54. A Note on Adaptive Coding Scheme Based on Control Quality for Wireless Feedback Control Systems Reviewed

        page: pp.2351-2355   2013.9

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    DOI: 10.1109/ETFA.2013.6648041

  55. A Study on Network and Multi-Route Coding for Information Advertisement in Wireless Mesh Networks Reviewed

        2013.9

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    DOI: 10.1109/PIMRC.2013.6666536

  56. An Application of Multi-User MIMO to Wireless Mesh Networks and its Performance Analysis Reviewed

    H. Kusumoto, H. Okada, K. Kobayashi, M. Katayama

      Vol. vol.J96-B ( no.7 ) page: pp.670-679   2013.7

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  57. FOREWORD

    KATAYAMA Masaaki

    IEICE transactions on fundamentals of electronics, communications and computer sciences   Vol. 96 ( 5 )   2013.5

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  58. Impact of the reduction of transmitted information on the control quality in a wireless feedback control system Reviewed

    R. Mizutani, K. Kobayashi, H. Okada, M. Katayama

      Vol. E96A ( 5 ) page: 869 - 877   2013.5

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    DOI: 10.1587/transfun.E96.A.869

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  59. Special Section on Networked Control Systems: Theories & Applications FOREWORD

    Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   Vol. E96A ( 5 ) page: 843-843   2013.5

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  60. Cooperative Automatic Parking System Based on Consensus Control with Mutual Exclusion Mechanism Reviewed

    NOTO Noriyasu, OKUDA Hiroyuki, TAZAKI Yuichi, SUZUKI Tatsuya, HAYAKAWA Soichiro, MITA Seiichi, KATAYAMA Masaaki, OBINATA Goro

    Transactions of the Society of Instrument and Control Engineers   Vol. 49 ( 11 ) page: 986 - 993   2013

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    A cooperative parking system based on consensus control and mutual exclusion mechanism is developed. The system incorporates the idea of consensus control that has been actively studied in the field of multi-agent control in order to balance the amount of time required for parking. Moreover, the notion of exclusive region is newly introduced to avoid collisions at junctions. The system is evaluated through large-scale simulations and field tests in which multiple personal electric vehicles share position and velocity information via wireless communication network.

    DOI: 10.9746/sicetr.49.986

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  61. Dynamic Bandwidth Allocation of Satellite/Terrestrial Integrated Mobile Communication System Reviewed

    T. Yamazato, T. Aman, M. Katayama

    IEEE Global Communications Conference     page: CD   2012.12

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  62. Performance Comparison between Single-User MIMO and Multi-User MIMO in Wireless Mesh Networks Reviewed

        page: pp.199-203   2012.9

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  63. A Study on Mutual Information Evaluation of Intermittent Transmission Method for Energy Harvested Wireless Sensor Networks Reviewed

        page: B2.3   2012.8

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  64. A Study on Cluster Lifetime in Multi-Hop Wireless Sensor Networks with Cooperative MISO Scheme Reviewed

    Z. Huang, H. Okada, K. Kobayashi, M. Katayama

    Journal of Communications and Networks   Vol. Vol.14 ( no.4 ) page: pp.443-450   2012.8

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    DOI: 10.1109/JCN.2012.6292251

  65. A Wireless Control System with Mutual Use of Control Signals for Cooperative Machines Reviewed

    KONDO Tsugunori, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE transactions on fundamentals of electronics, communications and computer sciences   Vol. 95 ( 4 ) page: 697 - 705   2012.4

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  66. Control Quality of a Feedback Control System under Cyclostationary Noise in Power Line Communication Reviewed

    CARRIZO Cesar, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE transactions on fundamentals of electronics, communications and computer sciences   Vol. 95 ( 4 ) page: 706 - 712   2012.4

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  67. Control Quality of a Feedback Control System Under Cyclostationary Noise in Power Line Communication Reviewed

    C. Carrizo, K. Kobayashi, H. Okada, M. Katayama

    IEICE Transactions on Fundamentals   Vol. E95A ( 4 ) page: 706 - 712   2012.4

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    DOI: 10.1587/transfun.E95.A.706

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  68. A Wireless Control System with Mutual Use of Control Signals for Cooperative Machines Reviewed

    T. Kondo, K. Kobayashi, M. Katayama

    IEICE Transactions on Fundamentals   Vol. vol.E95-A ( no.4 ) page: pp.697-705   2012.4

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    DOI: 10.1587/transfun.E95.A.69

  69. A Wireless Control System with Mutual Use of Control Signals for Cooperative Machines Reviewed

    Kondo Tsugunori, Kobayashi Kentaro, Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   Vol. E95A ( 4 ) page: 697 - 705   2012.4

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    This paper discusses a wireless control system for cooperative motion of multiple machines, and clarifies the influence of packet losses on the system behavior. We focus on the synchronization of the motion of the machines, and using the nature of wireless, we propose a new wireless control scheme for maintaining the synchronization performance under packet loss conditions. In the proposed scheme, each controlled object (plant) utilizes control information destined for all plants, and the main controller also utilizes state information of all plants. The additional information of the other controller-plant pairs is used to compensate lost information. As an example of the controlled plants, rotary inverted pendulums, which move synchronously with wireless connections in their control-feedback loops, are considered. Numerical examples confirm the superiority of the proposed scheme from the view-point of the synchronization of the motion of the plants.

    DOI: 10.1587/transfun.E95.A.697

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  70. Cooperative Transmission Scheme with the Reactivation Condition of Inactive Nodes in Solar-Powered Wireless Sensor Networks Reviewed

    K. Ota, K. Kobayashi, T. Yamazato, M. Katayama

    IEICE Transactions on Communications   Vol. vol.J95-B ( no.2 ) page: pp.246-256   2012.2

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  71. A Study on Cluster Partitioning with Cooperative MISO Scheme in Wireless Sensor Networks Reviewed

    Z. Huang, H. Okada, M. Katayama, T. Yamazato

    International Journal of Distributed Sensor Networks   Vol. Vol.2012   page: Article ID 490823, 9pages   2012

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    DOI: 10.1155/2012/490823

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  72. Power Supply Overlaid Communication with Common Clock Delivery for Cooperative Motion Control Reviewed

    F. Minamiyama, H. Koga, K. Kobayashi, M. Katayama

    IEICE Transactions on Fundamentals   Vol. vol.E94-A ( no.12 ) page: pp.2773-2775   2011.12

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  73. Power Supply Overlaid Communication with Common Clock Delivery for Cooperative Motion Control Reviewed

    Minamiyama Fumikazu, Koga Hidetsugu, Kobayashi Kentaro, Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES   Vol. E94A ( 12 ) page: 2773 - 2775   2011.12

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    For the control of multiple servomotors in a humanoid robots, a communication system is proposed. In the system, DC electric power, command/response signals and a common clock signal for precise synchronous movement of the servomotors are transmitted via the same wiring with a multi-drop bus. Because of the bandwidth limitation, the common clock signal and the command/response signals overlap each other. It is confirmed that the coexistence of both signals is possible by using interference cancellation at the reception of command/response signals.

    DOI: 10.1587/transfun.E94.A.2773

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  74. A Study on Cluster Lifetime of Single-Hop Wireless Sensor Networks with Cooperative MISO Scheme Reviewed

    Huang Zheng, Kobayashi Kentaro, Katayama Masaaki, Yamazato Takaya

    IEICE Transactions on Communications   Vol. E94B ( 10 ) page: 2881 - 2885   2011.10

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    DOI: 10.1587/transcom.E94.B.2881

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  75. i-LightHouse: a Visible Light Communication System for the Visually Impaired Reviewed

        page: pp.1031-1034   2011.9

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    DOI: 10.1109/PIMRC.2011.6139651

  76. Cooperative Transmission Scheme with Inactive Node Reactivation Condition for Solar-Powered Wireless Sensor Networks Reviewed

        page: pp.2394-2398   2011.9

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    DOI: 10.1109/PIMRC.2011.6139948

  77. Power Supply Overlaid Communication and Common Clock Delivery for Cooperative Motion Control Reviewed

        page: pp.370-375   2011.4

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    DOI: 10.1109/ISPLC.2011.5764425

  78. An Access Control Method Using Repeaters for Multipoint Cyclic Data Gathering Over a PLC Network Reviewed

        page: pp.376-381   2011.4

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    DOI: 10.1109/ISPLC.2011.5764426

  79. A Wireless Cooperative Motion Control System with Mutual Use of Control Signals Reviewed

        page: pp.25-30   2011.3

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    DOI: 10.1109/ICIT.2011.5754341

  80. Channel Estimator by Sum of Kalman-Based Estimation and Interpolation Estimation for MC-CDMA based Inter-Vehicle Communication Reviewed

    "H. Hiraiwa, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. Vol.J94-B ( No.2 ) page: pp.304-307   2011.2

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    "In this letter, we propose a new channel estimator for MC-CDMA based inter-vehicle communication. The proposed channel estimator estimates the channel recursively by weighted sum of Kalman-based channel estimator and an interpolation estimator. As results, the proposed channel estimator can suppress estimation error, which occurs when using Kalman channel estimator."

  81. Expected Communications Technology to Track Avian Influenza and Related the Statement of Appeal by ITU-D SG2 Q14 Reviewed

    Isao Nakajima, Toshihiko Kitano, Masaaki Katayama, Leonid Androuchko

    International Journal of E-Health and Medical Communications   Vol. vol.2 ( 4 ) page: pp.20-36   2011

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  82. EXIT Analysis for MAP-based Joint Iterative Decoding of Separately Encoded Correlated Sources Reviewed

    "K. Kobayashi, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. E93B ( 12 ) page: 3509 - 3513   2010.12

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    "We develop a mathematical framework for the extrinsic information transfer (EXIT) analysis to assess the convergence behavior of maximum a posteriori (MAP)-based joint iterative decoding of correlated sources, which are separately encoded and transmitted over noisy channels. Unlike the previous work, side information about the correlation is not perfectly given at the joint decoder but is extracted from decoder output and updated in an iterative manner. The presented framework provides a convenient way to compare between schemes. We show that it allows us to easily and accurately predict joint decoding gain and turbo cliff position."

    DOI: 10.1587/transcom.E93.B.3509

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  83. TOA UWB Positioning with Two Receivers Using Known Indoor Features Reviewed

    Kietlinski-Zaleski Jan, Yamazato Takaya, Katayama Masaaki

    IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E93B ( 12 ) page: 3624 - 3631   2010.12

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    Ultra-Wideband is an attractive technology for short range positioning, especially indoors. However, for normal Time of Arrival (ToA) positioning, at least three receivers with unblocked direct path to the transmitter are required. A requirement that is not always met. In this work, a novel algorithm for ToA positioning using only two receivers is presented. This is possible by exploiting the knowledge of some of the indoor features, namely positions of big flat reflective surfaces, for example ceiling and walls. The proposed algorithm was tested using data from a measurement campaign.

    DOI: 10.1587/transcom.E93.B.3624

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  84. Experimental Results on Simple Distributed Cooperative Transmission Scheme with Visible Light Communication Reviewed

    "T. Yamazato, K. Nakao, H. Okada, M. Katayama"

    IEICE Transactions on Communications   Vol. Vol.E93-B ( No.11 ) page: pp.2959-2962   2010.11

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    "We consider a distributed transmission of data packet to a sink where the distance of a sensor node to a sink is much longer than the maximum communication range of each sensor node. We give a simple modification to the transmitter, i.e., multiplication of random phase before the transmission. Thanks to Turbo Code, it is possible to extend the trans- mission range as the received amplitude varies symbol by symbol for our scheme while whole data packet may be lost for the conventional scheme. In this letter, we report the experimental results of our scheme equivalently developed using visible light communication."

  85. Experimental Results on Simple Distributed Cooperative Transmission Scheme with Visible Light Communication Reviewed

    Yamazato Takaya, Nakao Koji, Okada Hiraku, Katayama Masaaki

    IEICE TRANSACTIONS ON COMMUNICATIONS   Vol. E93B ( 11 ) page: 2959 - 2962   2010.11

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    We consider a distributed transmission of data packet to a sink where the distance of a sensor node to a sink is much longer than the maximum communication range of each sensor node. We give a simple modification to the transmitter, i.e., multiplication of random phase before the transmission. Thanks to Turbo Code, it is possible to extend the transmission range as the received amplitude varies symbol by symbol for our scheme while whole data packet may be lost for the conventional scheme. In this letter, we report the experimental results of our scheme equivalently developed using visible light communication.

    DOI: 10.1587/transcom.E93.B.2959

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  86. Kalman Channel Estimator for BFDM/OQAM system in Time-Frequency Dispersive Channels Reviewed

    "B. Mongol, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. Vol.J93-B ( No.10 ) page: pp.1466-1480   2010.10

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    "Biorthogonal Frequency Division Multiplexing / Offset QAM (BFDM/OQAM) allows to employ a Gaus- sian transmitter pulse. Thus, it performs well in the time-frequency dispersive channels as it can suppress ISI and ICI without having guard interval. However, in the highly mobile environment the performance deteriorates and channel estimation schemes became essential for further improvement of BFDM/OQAM systems. This paper proposes a novel adaptive channel estimator based on Kalman filter. Especially, we derive the essential equations to design Kalman filter, namely, the process equation and the measurement equation."

  87. Performance evaluation of the cognitive piggyback overlay systems with dirty paper coding Reviewed

    "J. Naganawa, K. Kobayashi, M. Katayama, T. Yamazato"

    10th International Symposium on Communications and Information Technologies (ISCIT2010)   ( No. FA1-1-4 ) page: pp.974-979   2010.10

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  88. Improvement of Sequential-Test-Based Cooperative Spectrum Sensing Systems in Band Limited Control Channels Reviewed

    "S. Mitsuya, K. Kobayashi, T. Yamazato, M. Katayama"

    10th International Symposium on Communications and Information Technologies (ISCIT2010)   ( No. FA1-1-3 ) page: pp.968-973   2010.10

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  89. Inband and Outband Spectrum Analysis of the BFDM and BFDM/OQAM Signals with Truncated Gaussian Pulses Reviewed

    "B. Mongol, T. Yamazato, M. Katayama"

    International Symposium on Information Theory and Its Applications     page: USB   2010.10

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  90. Tracking an LED Array Transmitter for Visible Light Communications in the Driving Situation Reviewed

    "T. Nagura, T. Yamazato, M. Katayama, T. Yendo, T. Fujii, H. Okada"

    IEEE International Symposium on Wireless Communication Systems (ISWCS2010)     page: CD-ROM   2010.9

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  91. A Study on Joint Channel Decoding Using Spatial Correlation of Sensor Observations According to ADC Bit levels Reviewed

    "K. Kobayashi, T. Yamazato, M. Katayama"

    IEEE International Workshop on Wireless Distributed Networks (WDN2010)     page: pp.484-489   2010.9

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  92. TDOA UWB Positioning with Three Receivers Using Known Indoor Features Reviewed

    "J. Kietlinski-Zaleski, T. Yamazato, M. Katayama"

    "2010 IEEE International Conference on Ultra-Wideband, Nanjing, China, September 20-23"     page: USB   2010.9

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  93. Experimental Validation of TOA UWB Positioning with Two Receivers Using Known Indoor Features Reviewed

    "J. Kietlinski-Zaleski, T. Yamazato, M. Katayama"

    IEEE/ION PLANS 2010 Position Location and Navigation Symposium     page: CD-ROM   2010.5

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  94. Improved Decoding Methods of Visible Light Communication System for ITS using LED Array and High-Speed Camera Reviewed

    "T. Nagura, T. Yamazato, M. Katayama, T. Yendo, T. Fujii, H. Okada"

    IEEE Vehicular Technology Conference (VTC-Spring2010)     page: CD-ROM   2010.5

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  95. Optimal Cluster Partitioning for Wireless Sensor Networks with Cooperative MISO Scheme Reviewed

    "Z. Huang, T. Yamazato, M. Katayama"

    The Sixth Advanced International Conference on Telecommunications (AICT2010)     page: CD-ROM   2010.5

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  96. Correlation Estimation for Joint Decoding of Correlated Observations According to ADC Bit Levels Reviewed

    "K. Kobayashi, T. Yamazato, M. Katayama"

    "IEICE Transactions on Fundamentals,"   Vol. vol.J93-A ( no.5 ) page: pp.353-364   2010.5

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    "In wireless sensor networks, a large number of sensor nodes are densely deployed for reliable environmental sensing. Due to the high density in the sensing field, sensor observations are spatially correlated. We focus on a property that such correlated observations are available in the form of ADC's binary output. In this paper, we study a joint decoding of transmitted data with correlation estimation according to ADC bit levels. Based on analysis of correlation estimation error, we propose a simple but effective estimation method. Our proposal achieves good decoding performance even when correlation of some bit levels have different amplitude and sign."

  97. An Access Control Method for Multipoint Cyclic Data Gathering over a PLC Network Reviewed

    "Y. Ohtomo, T. Yamazato, M. Katayama"

    IEEE International Symposium on Power Line Communications and Its Applications     page: USB   2010.3

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  98. A basic study on the Quadrant Detector to pursuit a noise-level beacon of a wild bird Reviewed

    Nakajima I., Juzoji H., Katayama M.

    TENCON 2010: 2010 IEEE REGION 10 CONFERENCE     page: 1742-1745   2010

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  99. Decoding of Separately Encoded Multiple Correlated Sources Transmitted over Noisy Channels Reviewed

    "K. Kobayashi, T. Yamazato, M. Katayama"

    "IEICE Transactions on Fundamentals,"   Vol. vol.E92-A ( no.10 ) page: pp.2402-2410   2009.10

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    We propose an iterative channel decoding scheme for two or more multiple correlated sources. The correlated sources are separately turbo encoded without knowledge of the correlation and transmitted over noisy channels. The proposed decoder exploits the correlation of the multiple sources in an iterative soft decision decoding manner for joint detection of each of the transmitted data. Simulation results show that achieved performance for the more than two sources is also close to the Shannon and Slepian-Wolf limit and large additional SNR gain is obtained in comparison with the case of two sources. We also verify through simulation that no significant penalty results from the estimation of the source correlation in the decoding process and the code with a low error floor achieves good performance for a large number of the correlated sources.

  100. Phase Compensation for Narrowband PLC Channels with Cyclic Time-Varying Features Reviewed

    "Y. Sugiura, T. Yamazto, M. Katayama"

    Third Workshop on Power Line Communications     page: CD-ROM   2009.10

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  101. TOA UWB Position Estimation with Two Receivers and a Set of Known Reflectors Reviewed

    "J. KIETLINSKI-ZALESKI, T. YAMAZATO, M. KATAYAMA"

    ICUWB 2009     page: pp.376-380   2009.9

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  102. Cognitive Radio with Relay of a Primary Signal and Piggyback Modulation Reviewed

    "J. Naganawa, T. Yamazato, M. Katayama"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: CD-ROM   2009.9

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  103. Traffic Prediction Scheme for Resource Assignment of Satellite/Terrestrial Frequency Sharing Mobile Communication System Reviewed

    "T. Aman, T. Yamazato, M. Katayama"

    International Workshop on Satellite and Space Communications     page: CD-ROM   2009.9

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  104. Channel Estimation and Tracking Schemes for the Pulse-Shaping OFDM Systems Reviewed

    "B. Mongol, T. Yamazato, M. Katayama"

    IEEE International Conference on Communications   Vol. IEEE International Conference on Communications   page: CD-ROM   2009.6

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    Robust channel estimation scheme is essential for pulse-shaping OFDM systems in the multipath mobile environment. This paper proposes three types of channel estimation schemes for the general class of pulse-shaping OFDM systems. The first two types are su

  105. Bit and Power Allocation for Power-Line Communications under Nonwhite and Cyclostationary Noise Environment Reviewed

    "N. Sawada, T. Yamazato, M. Katayama"

    IEEE International Symposium on Power Line Communications and Its Applications     page: CD-ROM   2009.4

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    This manuscript discusses the adaptive OFDM system for narrow-band power-line communications with nonwhite and cyclostationary noise environment. The bit and power allocation algorithm is proposed with the considerations on the cyclostationarity of power-

  106. Turbo Equalization for Inter-Vehicle Communication based on MC-CDMA Reviewed

    "N. Hiraiwa, A. Sakata, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J92-B ( no.1 ) page: pp.367-369   2009.1

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    "In this letter, we propose a new SC/MMSE Turbo equalizer for inter-vehicle communication based on MC-CDMA. We modify the MMSE filter in SC/MMSE Turbo equalizer focusing on the difference of channel transfer function of each car. As results, we show that b"

  107. Energy Efficiency of Cooperative MISO Technique in Multi-hop Wireless Sensor Networks Reviewed

    "Z. Huang, T. Yamazato, M. Katayama"

    2008 The Fourth International Conference on Intelligent Sensors     page: pp. 511-515   2008.12

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    "In this paper, the energy efficiency of cooperative Multiple-Input Single-Output (MISO) technique for a multi-hop wireless sensor network is investigated and compared with other transmission schemes. Firstly, we present different schemes for data transmis"

  108. Mitigation of Satellite Non-linear Effect using SLM and Iterative Distortion Compensation for OFDM in Satellite Channel Reviewed

    "T. Aman, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.J91-B ( no.12 ) page: pp.1644-1646   2008.12

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    "OFDM suffers from the nonlinear distortion caused by TWTA in satellite communication. In this letter, we adopt SLM PAPR reduction that suppress out of bandemission. Furthermore, we improve BER by the terative distortion compensation."

  109. Joint Channel Decoding of Spatially and Temporally Correlated Data in Wireless Sensor Networks Reviewed

    "K. Kobayashi, T. Yamazato, H. Okada, M. Katayama"

    The 2008 International Symposium on Information Theory and Its Applications     page: pp.930-934   2008.12

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    "In densely deployed wireless sensor networks, sensor observations are spatially correlated. Furthermore, the nature of physical phenomena constitutes a temporal correlation between transmitted observations of an individual sensor node. In this paper, we p"

  110. Energy-aware Protocol for Cluster-based Cooperative Transmission in Wireless Sensor Networks Reviewed

    "K. Takeshima, T. Yamazato, M. Katayama"

    "Proceedings of International Workshop on Vision, Communications and Circuits (IWVCC'08)"     page: pp. 149-152   2008.11

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    "In this paper, we look at communication protocol designed for cluster-based cooperative transmission. As it can increase the spatial diversity of wireless channel, cluster-based cooperative transmission is effective not only for reliable transmission but "

  111. A New SC/MMSE Turbo Equalization for MC-CDMA to use in Inter-Vehicle Communication Reviewed

    "N. Hiraiwa, A. Sakata, T. Yamazato, M. Katayama"

    IEEE Vehicular Technology Conference 2008-Fall     page: CD-ROM   2008.9

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    "In this paper, we propose a new SC/MMSE Turbo equalizer for MC-CDMA to use in inter-vehicle communication (IVC). We modify the weight of the MMSE filter of SC/MMSE Turbo equalizer so that it can combat with frequency-selective fading in highly mobile IVC "

  112. CDMA slotted ALOHA System with Successive Interference Cancellation for Inter-Vehicle Communications Reviewed

    "A.Sakata, T.Yamazato, H.Okada, M.Katayama"

    IEEE International Symposium on Spread Spectrum Techniques and Applications     page: pp.188-193   2008.8

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    "This paper compares the throughput performance of orthogonal frequency division multiple access (OFDM) and multicarrier CDMA (MC-CDMA) in inter-vehicle communications (IVC).In particular, we compare the throughputs in a situation where hidden terminals ar"

  113. Power-Line Communications and their Technical Issues Invited Reviewed

    M. Katayama

    IEICE Fudamentals Review   Vol. vol.2 ( no.1 ) page: pp.35-47   2008.7

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    "Power-Line Communication (PLC) system transmit information through legacy power-line wires by using a radio frequency signal. This manuscript introduces various applications, system configurations, signaling methods, and communications media of PLC. The h"

  114. A Route Establishment Scheme for Multi-route Coding in Multihop Cellular Networks Reviewed

    "H. Okada, H. Imai, T. Yamazato, M. Katayama, K. Mase"

    Academy Publisher Journal of Networks   Vol. vol.3 ( no.7 ) page: pp.34-40   2008.7

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    "Since the network topology in multihop cellular networks is flexible, multiple routes from a user station to a base station can be established. To reduce packet reception errors of wireless links, a multi-route coding scheme was proposed. An important iss"

  115. Ultrasonic Array Emitter for Automotive Short-range Radar Networks Reviewed

    "H. Hatano, T. Yamazato, M. Katayama"

    Journal of Society of Automotive Engineers of Japan   Vol. vol.62 ( No.7 ) page: pp.29-34   2008.7

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    We consider radar network systems using multiple ultrasonic radars for parking assistance. Our radar network has an ultrasonic array emitter and multiple sensors. The ultrasonic array emitter is composed of multiple ultrasonic emitters and can emit signal

  116. A Route Establishment Scheme for Multi-route Coding in Multihop Cellular Networks Reviewed

    H. Okada, H. Imai, T. Yamazato, M. Katayama, K. Mase

    Academy Publisher Journal of Netowkrs   Vol. Vol.3 ( no. 7 ) page: pp.34-40   2008.7

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  117. Spatial Diversity Scheme with Multiple-Transmit/Receive Antennas and Relay Terminals for Reliable Wireless Control Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J91-B ( no.5 ) page: pp.585-594   2008.5

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    "In this manuscript, a communication system for wireless control of industrial machines in indoor environment is discussed. In order to combat indoor fading and shadowing, an STBC cooperative relaying scheme, which uses multiple transmit and receive antenn"

  118. Measurement of Narrowband Channel Characteristics in Single-Phase Three-Wire Indoor Power-Line Channels Reviewed

    "Y. Sugiura, T. Yamazato, M. Katayama"

    IEEE International Symposium on Power Line Communications and Its Applications     page: CD-ROM   2008.4

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    "This manuscript reports the measurement results of narrowband signal propagation of PLC channels. In Japan, in-house wiring is single-phase three-wire, and each branch between an outlet of 100V and the panel board is connected to one of two live conductor"

  119. Performance Improvement of Downlink MC-CDMA Cellular System with an Intermittent Transmission Reviewed

    "M.Fushiki, T.Yamazato, M.Katayama"

    IEEE Radio and Wireless Symposium     page: CD-ROM   2008.1

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    "Throughput performance of MC-CDMA systems depends on the success in managing interference arising from intercell transmission. In this paper, we propose a new intercell interference mitigation scheme for downlink MC-CDMA scheme. In the proposed scheme, a "

  120. Correlations of noise waveforms at different outlets of power-line network Reviewed

    "A. Kawaguchi, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J90-A ( no.11 ) page: pp 851-860   2007.11

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    "This manuscript discusses the relationships of noise waveforms measured at different outlets in a three-wire single-phase (one neutral and two live conductors) power-line network. As a result of experimental measurements, it is shown that instantaneous noise voltages at two different outlets have high correlations if they are connected to the same live conductor. It is also found that the instantaneous noise powers and cyclic averaged noise powers have large correlations even for a pair of outlets connected to the different live conductors. The correlation coefficients for instantaneous voltages and powers are calculated as the frequency functions."

  121. Automotive Ultrasonic Array Emitter for Short-range Targets Detection Reviewed

    "H. Hatano, T. Yamazato, M. Katayama"

    IEEE International Symposium on Wireless Communication Systems     page: pp.355-359   2007.10

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    "We consider an application of a ultrasonic array emitter to automotive targets detection systems for short-range. Ultrasonic sensors are low cost and widely used. However detectable ranges do not meet the requirements for short-range applications, such as"

  122. A Route Selection Scheme for Multi-Route Coding in Multihop Cellular Networks Reviewed

    "H. Okada, H. Imai, T. Yamazato, M. Katayama, K. Mase"

    IEEE Vehicular Technology Conference     page: CD-ROM   2007.10

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    "In the multihop cellular networks, multiple routes from a user station to a base station can be established because of the flexibility of network topology. In order to reduce packet errors of wireless transmissions, we proposed the multi-route coding sche"

  123. A Novel Contention-Free Medium Access Control Protocol for Inter-Vehicle Communication Systems Reviewed

    "M. Masamura, H. Okada, S. Makido, T. Yamazato, M. Katayama"

    The First International Workshop on Mobile Vehicular Networks at MASS 2007     page: CD-ROM   2007.10

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    "We propose a contention-free medium access control (MAC) protocol for inter-vehicle communication systems that share information for the improvement of safety drive on the highway. In the proposed system, contention-free medium access is achieved by perio"

  124. A study on position estimation method for multiple targets detection for automotive radar networks Invited Reviewed

    "H. Hatano, T. Yamazato, H. Okada, M. Katayama"

    Transactions of Society of Automotive Engineers of Japan   Vol. vol. 38 ( no. 5 ) page: pp.191-196   2007.9

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    "We research automotive radar networks with multiple radars set in the front of car. Especially, we consider data processing using measured ranges provided by the radars in order to estimate multiple target positions with high accuracy. This paper is composed of three steps. Firstly, we derive a method based on MAP estimation. Secondly, we propose a method which reduces the calculation complexity compared with the above MAP method. Finally, we introduce a method which can detect targets without ghost-targets in case the lacks of measured ranges are happened because of miss-detection. We evaluate the methods with computer simulations."

  125. Efficient Channel Estimation Scheme for Pulse-shaping OFDM Systems Reviewed

    "B.Mongol, T. Yamazato, M. Katayama"

    International Symposium on Nonlinear Theory and its Applications     page: pp.92-95   2007.9

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    This paper proposes a low-complexity channel estimation sheme for the pulse-shaping OFDM systems in the highly mobile multipath environment. The estimation scheme is based on the tapped-delay-line model for the channel. The main idea behind our scheme is

  126. Distributed Space-Time Block Coding for Large and Undetermined Set of Relay Terminals Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: N/A CD-ROM   2007.9

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    "In this manuscript, a spatial diversity scheme with multiple transmit and receive antennas together with multiple relay terminals for packet radio is considered. Correctly received signals at some relay terminals are re-transmitted to the receiver with the spatial diversity by STBC cooperative relaying scheme. To achieve high diversity order with the conventional STBC cooperative relaying scheme, relay terminals which re-transmit the signals are required to exchange signaling information with each another. However, the exchanging of the information causes delay of the signal transmission. Thus, in this manuscript, a novel signaling scheme for the STBC cooperative relaying is proposed. The proposed scheme releases relay terminals exchanging the signaling information. The proposed scheme also saves communication resources to provide flexibility for installation of relay terminals."

  127. Hirerarchical Coding Scheme for Optical Wireless Communication Using LED Traffic Light and High-Speed Camera Reviewed

    "K. Masuda, T. Yamazato, K. Okada, M. Katayama"

    "IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences"   Vol. Vol. J90-A ( No.9 ) page: pp.696-704   2007.9

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    "LEDs are expected as lightning sources for next generation, and data transmission system using LEDs attract attention. In this paper, we present hierarchical coding scheme using LED traffic lights and high-speed camera for Intelligent Transport Systems (I"

  128. Throughput Comparison of CSMA and CDMA slotted ALOHA in Inter-Vehicle Communication Reviewed

    "A.Sakata, H.Okada, T.Yamazato, M.Katayama"

    The 7th International Conference on ITS Telecommunications     page: pp.52-57   2007.6

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    "This paper compare the throughput performance of a carrier-sense multiple access (CSMA) scheme that uses an orthogonal frequency division multiple access (OFDM) physical layer and a CDMA slotted ALOHA scheme based on multicarrier CDMA (MC-CDMA) in inter-vehicle communication (IVC). In particular, we compare the throughputs in a situation where a hidden terminal is no longer negligible. We encounter such a situation in an intersection where two or more cars are crossing by. In a hidden terminal situation, the CSMA scheme may degrade throughput. On the other hand, CDMA slotted ALOHA has a resistance to the hidden terminal situation as it can support simultaneous packets. However, the transmission data rate is much slow because of the spreading. Thus the total throughput may not be as high as the CSMA based OFDM even in a hidden terminal situation. As a result, we show that the CSMA based OFDM system shows better total throughput than CDMA slotted ALOHA in all region. But, only the signal from the nearest car can be received. On the contrary, CDMA slotted ALOHA can be received many packets simultaneously. This is much preferable feature for safety driving."

  129. Cooperative Transmission Scheme in Distributed Sensor Network for Extension of Transmission Range Reviewed

    "K. Nakao, T. Yamazato, H. Okada, M. Katayama"

    "Fourth International Conference on Networked Sensing Systems,"     page: pp.89-92   2007.6

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    "We consider a distributed transmission of data packet to a sink where the distance for a sensor node to the sink is much longer than a sensor node can transmit. We give a simple modification in the transmitter, i.e., multiplication of random phase before the transmission. Thanks to a strong error correcting code, it is possible to extend the transmission range as the received amplitude varies symbol by symbol for our scheme while whole data packet may be lost for the conventional scheme."

  130. * A Method for Reducing the Influence of the Interference Considering ADC Nonlinearity in an OFDM Receiver Reviewed

    "M. Sawada, T. Yamazato, M. Katayama"

      Vol. vol.J90-B ( no. 6 ) page: pp.577-584   2007.6

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    In this paper we propose an OFDM receiver that mitigates the performance degradation caused by interference. The mitigation process is done all in digital after ADCs. The receiver estimates the reliability of each OFDM symbol based on its number of out-of-range samples. This reliability is then used as the external information in soft Viterbi decoding process. The results of numerical simulations for 16QAM/OFDM show that the proposed receiver is robust to strong interference.

  131. A Simple Estimator of Multiple Target Positions for Automotive Short Range Radar Networks Reviewed

    "H. Hatano, T. Yamazato, H. Okada, M. Katayama"

    IEEE Vehicular Technology Conference     page: pp.2511-2515   2007.4

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    "For safety applications, automotive radar networks show an interesting potential. Apart from long range radars, networked short range radar systems are under development. Additional applications can be accomplished, such includes precrash detection, parki"

  132. Coded Modulation in Consideration of State of Signals for M-ary PSK Coherent Signals Reviewed

    "T. Otake, H. Okada, T. Yamazato, K. Yamazaki, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J90-A ( no.3 ) page: pp.257-261   2007.3

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    "In this letter, we introduce coded modulation for M-ary PSK coherent state signals in quantum communication systems in which quantum signals are demodulated individually. We propose the design method of coded modulation and evaluate the performance of bit"

  133. Compensation Scheme for Nonlinear Distortion with 8PSK/OFDM Transmission in Nonlinear Satellite Channel Reviewed

    "T. Yamaoka, T. Yamazato, H. Okada, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J90-B ( no.2 ) page: pp.138-147   2007.2

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    This paper discusses 8PSK/OFDM transmission in nonlinear satellite channel. We propose an effective compensation scheme for nonlinear distortion with high coding rate. Proposed compensation scheme is composed by bit-interleaved coded modulation with itera

  134. Route Characteristic Estimation for Multi-Route Coding in Wireless Multihop Networks Reviewed

    "H. Okada, M. Umakoshi, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J90-B ( no.1 ) page: pp.93-96   2007.1

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    "In the multi-route coding, encoded subpackets are transmitted via multiple routes and decoded at a destination node to get diversity gain. Because the characteristic of each route is usually different, the performance will be improved by considering it. I"

  135. Influence of ADC Nonlinearity on the Performance of an OFDM Receiver Reviewed

    "M. Sawada, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.E89-B ( no.12 ) page: pp.3250-3256   2006.12

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    "This paper discusses the influence of the nonlinearity of analog-to-digital converters (ADCs) on the performance of orthogonal frequency division multiplexing (OFDM) receivers. We evaluate signal constellations and bit error rate performances while considering quantization errors and clippings. The optimum range for an ADC input amplitude is found as a result of the trade-off between quantization error and the effects of clipping. In addition, it is shown that the peak-to-average power ratio (PAPR) of the signal is not a good measure of the bit error rate (BER) performance, since the largest peaks occur only with very low probabilities. The relationship between the location of a subcarrier and its performance is studied. As a result, it is shown that the influence of the quantization error is identical for all subcarriers, while the effects of clipping depend on the subcarrier frequency. When clipping occurs, the BER performance of a subcarrier near the center frequency is worse than that near the edges."

  136. Iterative channel decoding scheme using the correlation of transmitted information sequences in sensor networks Reviewed

    "K. Kobayashi, T. Yamazato, H. Okada and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J89-A ( no.12 ) page: pp.1044-1056   2006.12

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  137. Influence of Characteristics of Wireless Channels on Quality of Wireless Control Systems Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J89-A ( no.12 ) page: pp.1104-1107   2006.12

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    "In this manuscript, the employment of wireless data transmission for control of industrial machines in an indoor fading environment is considered. The relationship between the performance of the wireless control and that of the wireless transmission is studied in two types of the systems: the system with wireless transmission both for a control signal to a controlled target and a feedback signal from a sensor at the target; and the system that employs wireless transmission only for a control signal. As a result, it is shown that the performance of the systems can be improved by increasing the transmission rate as well as decreasing the error rate. The fact suggests how the wireless transmission should be designed to maintain high quality in wireless-controlled systems."

  138. MIMO Zero-forcing Equalizer for BFDM/OQAM Systems in the Highly Mobile Environments Reviewed

    "B. Mongol, T. Yamazato, H. Okada, M. Katayama"

    IEEE Global Communications Conference     page: N/A   2006.11

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  139. MIMO Zero-forcing Equalizer for BFDM/OQAM Systems in Time-Frequency Dispersive Channels Reviewed

    B. Mongol, T. Yamazato, H. Okada, M. Katayama

    IEICE Transactions on Fundamentals   Vol. vol.E89-A ( no.11 ) page: pp.3114-3122   2006.11

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  140. Equalizer for BFDM/OQAM Systems in Time-Frequency Dispersive Channels Reviewed

    B. Mongol, T. Yamazato, H. Okada, M. Katayama MIMO Zero-forcing

    IEICE Transactions on Fundamentals   Vol. E89-A ( 11 ) page: 3114-3122   2006.11

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  141. Influence of Transmit and Receive Correlations on Performance of the MIMO System with Multiple Antennas and Relay Terminals Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    The 2006 International Symposium on Information Theory and Its Applications     page: pp. 454-459   2006.10

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  142. A study on route selection metrics for the multiple-route packet combining scheme in wireless multihop networks Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J89-B ( no.10 ) page: pp.2047-2051   2006.10

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  143. Iterative Joint Channel-Decoding Scheme Using the Correlation of Transmitted Information Sequences Reviewed

    "K. Kobayashi, T. Yamazato, H. Okada, M. Katayama"

    The 2006 International Symposium on Information Theory and Its Applications     page: pp.808-813   2006.10

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  144. Channel Estimation for BFDM/OQAM System in Dispersive Time-Varying Channels Reviewed

    "B. Mongol, T. Yamazato, H. Okada, and M. Katayama"

    International Symposium on Wireless Communication Systems     page: N/A   2006.9

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  145. The Effect of Multipath Hybrid Routing Protocol in Multihop Cellular Networks Reviewed

    "H. Imai, H. Okada, T. Yamazato, M. Katayama"

    "The 17th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: N/A   2006.9

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  146. * A Mathematical Model of Noise in Narrowband Power-Line Communication Systems Reviewed

    "M. Katayama, T. Yamazato, H. Okada"

    IEEE Journal on Selected Areas in Communications   Vol. vol.24 ( no.7 ) page: pp.1267-1275.   2006.7

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    "This manuscript introduces a mathematically tractable and accurate model of narrowband power-line noise based on experimental measurements. In this paper, the noise is expressed as a Gaussian process whose instantaneous variance is a periodic time function. With this assumption and representation, the cyclostationary features of power-line noise can be described in close form. The periodic function that represents the variance is then approximated with a small number of parameters. The noise waveform generated with this model shows good agreement with that of actually measured noise. Noise waveforms generated by different models are also compared to that of the proposed mode."

  147. Peformance analysis of UWB Impulse Radar Receiver using Parallel IPCP Reviewed

    "H. Hatano, T. Yamazato, H. Okada, M. Katayama"

    IEICE Transaction on Communications   Vol. vol.J89-A ( no.6 ) page: pp.544-556   2006.5

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  148. Throughput Evaluation of ARQ Scheme for Multi-route Coding in Wireless Multi-hop Networks Reviewed

    "H. Okada, T. Wada, K. Ohuchi, M. Saito, T. Yamazato, M. Katayama"

    IEEE Vehicular Technology Conference     page: pp.668-672   2006.5

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  149. Multi-route Coding in Wireless Multi-hop Networks Reviewed

    "H. Okada, N. Nakagawa, T. Wada, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.E89-B ( no.5 ) page: pp.1620-1626   2006.5

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  150. Correlations of noise waveforms at different outlets in a power-line network Reviewed

    "A. Kawaguchi, H. Okada, T. Yamazato, M. Katayama"

    IEEE International Symposium on Power Line Communications and Its Applications     page: N/A   2006.3

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  151. Study on Signal Attenuation Characteristics in Power Line Communications Reviewed

    "T. Maenou, M. Katayama"

    IEEE International Symposium on Power Line Communications and Its Applications     page: N/A   2006.3

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  152. An improvement of the transmission quality using the correlation of the observation data in sensor networks Reviewed

    "K. Kobayashi, T. Yamazato, H. Okada and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J88-A ( no.12 ) page: pp.1442-1451   2005.12

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  153. Target Position Estimation using MMSE for A Radar Network Reviewed

    "H.Hatano, T. Yamazato, H. Okada, and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J88-A ( no.12 ) page: pp.1456-1459   2005.12

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  154. Requirements for Future Wireless Communication Systems Invited Reviewed

    M. Katayama

    "International COE Workshop on Nano Processes and Devices, and Their Applications"     page: pp.45-46   2005.12

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  155. Successive Interference Cancellation for Hierarchical Parallel Optical Wireless Communication Systems Reviewed

    "H. Okada, K. Masuda, T. Yamazato, M. Katayama"

    The 11th Asia-Pacific Conference on Communications     page: pp.788-792   2005.10

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  156. Outage Probability of a Macro and Micro MIMO Diversity Scheme in an Indoor Fading and Shadowing Environment Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.E88-A ( no.10 ) page: pp.2945-2951   2005.10

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    "In this manuscript, a layered macro / micro diversity scheme is introduced at the receiver side of a MIMO STBC wireless control system under fading and shadowing environment. The combination of the outputs of micro diversity is based on soft-decision values, while the macro diversity branches are combined based on hard decision values. As a measure of the reliability of the system, the outage probability of frame-error rate is employed. The performance of the proposed system is analytically and numerically evaluated and the impact of the macro diversity in the outage probability is clarified."

  157. A MIMO System with Relay Terminals for Reliable Wireless Control Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    "The 16th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: N/A   2005.9

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  158. On the Second-order Statistics of the Channel Parameters for BFDM/OQAM Systems Reviewed

    "B. Mongol, T. Yamazato, H. Okada, M. Katayama"

    2nd International Symposium on Wireless Communication Systems     page: pp.534-538   2005.9

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  159. A New Coded QAM Modulation Scheme for Broadband Satellite Communication Reviewed

    "T. Yamazato, T. Yamaoka, H. Okada, M. Katayama, A. Ogawa"

    23rd AIAA International Communications Satellite Systems Conference (ICSSC-2005)     page: MOD-3-3   2005.9

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  160. Influence of the Nonlinearity of the ADC in an OFDM Receiver Reviewed

    "M. Sawada, H. Okada, T. Yamazato, and M. Katayama"

    The 10th International OFDM-Workshop 2005     page: pp.220-224   2005.8

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  161. Application of Successive Interference Cancellation to a Packet-Recognition/Code-Acquisition Scheme in CDMA Unslotted ALOHA Systems Reviewed

    "Y. Tadokoro, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.E88-A ( no.6 ) page: pp.1605-1612   2005.6

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  162. Performance Evaluation of Route Coding Scheme in Wireless Multi-hop Networks Reviewed

    "H. Okada, T. Wada, K. Ohuchi, M. Saito, T. Yamazato, M. Katayama"

    IEEE Vehicular Technology Conference     page: pp.3092-3096   2005.6

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  163. Single-user MAP Based Soft-in/Soft-output Parallel Interference Canceler Utilizing Retransmission Diversity Reviewed

    "Y. Tadokoro, H. Okada, T. Yamazato, and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J88-A ( no.6 ) page: pp.739-750   2005.6

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  164. Target position estimation using MMSE for UWB IPCP receivers Reviewed

    "H. Hatano, T. Yamazato, H. Okada, M. Katayama"

    The 5th International Conference on ITS Telecommunications     page: pp.131-134   2005.6

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  165. Power-Line Communications Invited Reviewed

    M. Katayama

    Journal of the Society of Instrument and Control Engineers   Vol. vol.44 ( no.6 ) page: pp.378-383   2005.6

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  166. A Mathematical Model of Narrowband Power-Line Noise Based on Measurements Reviewed

    "M. Katayama, T. Yamazato, H. Okada"

    9th International Symposium on Power-Line Communications and Its Applications     page: pp.152-156   2005.4

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  167. An Adaptive Receiver for Power-Line Communications with the Estimation of Instantaneous Noise Power Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.E88-A ( no.3 ) page: pp.755-760   2005.3

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    "The noise on power-lines is non-stationary, while the instantaneous noise power in different frequency bands are dependent. Under such noise environments, the instantaneous noise power in a frequency band can be estimated by observing the noise in other frequency bands. In this paper, we propose a receiver structure which uses the estimated instantaneous noise power in the decoding process and show its superiority in BER performance to conventional systems."

  168. An Analysis of the Maximum Throughput on CDMA Packet Communication Systems Employing Successive Interference Cancellation Reviewed

    "Y. Tadokoro, H. Okada, T. Yamazato, and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J88-A ( no.3 ) page: pp.429-433   2005.3

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  169. Time-Dependent Analysis of the Multiple-Route Packet Combining Scheme in Wireless Multihop Networks Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato, M. Katayama"

    International Journal of Wireless Information Networks   Vol. vol. 12 ( no. 1 ) page: pp. 35-45   2005.1

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  170. Performance analysis of multi-route packet combining scheme for real-time communications in wireless multihop networks Reviewed

    "Y. Hirayama, N. Nakagawa, H. Okada, T. Yamazato, and M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J88-B ( no.1 ) page: pp.269-279   2005.1

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  171. A Macro and Micro MIMO Diversity Scheme for a Shadowing Environment Reviewed

    "R. Uchida, H. Okada, T. Yamazato, M. Katayama"

    The 2004 International Symposium on Information Theory and Its Applications     page: pp.1353-1358   2004.10

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  172. Performance Evaluation for Error Correcting Scheme on Multiple Routes in Wireless Multi-hop Networks Reviewed

    "N. Nakagawa, H. Okada, T. Wada, T. Yamazato, M. Katayama"

    The 2004 International Symposium on Information Theory and Its Applications     page: pp.1535-1539   2004.10

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  173. A Simple Data Relay Process and Turbo Code Application to Wireless Sensor Networks Reviewed

    "T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    1st International Symposium on Wireless Communication Systems     page: pp.398-402   2004.9

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  174. The Optimum Received Signal-Power Distribution for CDMA Packet Communication Systems Employing Successive Interference Cancellation Reviewed

    "Y. Tadokoro, H. Okada, T. Yamazato, M. Katayama"

    IEEE International Symposium on Spread Spectrum Techniques and Applications     page: pp.37-41   2004.9

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  175. Performance Analysis of MC-CDMA System with and without Guard Interval in Two-Path Channel Reviewed

    "H. Yamamoto, T. Yamazato, H. Okada, and M. Katayama"

    IEEE International Symposium on Spread Spectrum Techniques and Applications     page: pp.67-71   2004.9

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  176. Performance Analysis of UWB Impulse Radar Using Parallel IPCP Receiver Reviewed

    "H. Hatano, H. Okada, T. Yamazato, M. Katayama"

    1st International Symposium on Wireless Communication Systems     page: pp.115-119   2004.9

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  177. Performance analysis of multiple-route packet combining scheme for real-time communications in wireless multihop networks Reviewed

    "Y. Hirayama, N. Nakagawa, H. Okada, T. Yamazato, M. Katayama"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.1   page: pp.140-144   2004.9

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  178. A Study on Error Correcting and Diversity Combiner Scheme on Multiple Routes in Wireless Multi-hop Networks Reviewed

    "H. Okada, N. Koie, N. Nakagawa, T. Yamazato, M. Katayama"

    1st International Symposium on Wireless Communication Systems     page: pp.183-187   2004.9

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  179. Assisted Highway System Using Reference Course Information and Inter-Vehicle Communications Reviewed

    "D. Yamakage, T. Yamazato, H. Okada, M. Katayama"

    The 4th International Workshop on ITS Telecommunications     page: pp.181-185   2004.7

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  180. A Study for Wireless TCP Access with Base Station Diversity Reviewed

    "K. Naito, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Communications   Vol. vol.J87-B ( no.4 ) page: pp.512-523   2004.4

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  181. A study of adaptive MMSE receiver operating in thefrequency domain for CDMA system Reviewed

    "H. Takeuchi, T. Yamazato, H. Okada, M. Katayama"

    2004 RISP International Workshop on Nonlinear Circuits and Signal Processing     page: pp.57-60   2004.3

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  182. An Adaptive PLC Receiver with the Estimation of Instantaneous Noise Power Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato and M. Katayama"

    8th International Symposium on Power-Line Communications and Its Applications     page: pp.116-121   2004.3

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  183. SNIR Analysis of Asynchronous MC-CDMA System in Frequency Selective Fading Channel Reviewed

    "H. Takeuchi, T. Yamazato, H. Okada and M. Katayama"

    IEICE Transactions on Fundamentals vol.J86-A   Vol. vol.J86-A ( no.12 ) page: pp.1426-1430   2003.12

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  184. Reducing Peak Power of Coded OFDM Systems with Multiple Symbol Mapping Reviewed

    "M. Harada, T. Yamazato, H. Okada, M. Katayama, and A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J86-A ( no.10 ) page: pp.1058-1067   2003.10

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  185. Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel Reviewed

    "M. Harada, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.E86-A ( no.6 ) page: pp.1541-1549   2003.6

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  186. Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel Reviewed

    M. Harada, T. Yamazato, H. Okada, M. Katayama, A. Ogawa

    IEICE Transactions on Fundamentals,   Vol. E86-A ( 6 ) page: 1541-1549   2003.6

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  187. Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel Reviewed

    M. Harada, T. Yamazato, H. Okada, M. Katayama, A. Ogawa

    IEICE Transactions on Fundamentals   Vol. vol.E86-A ( no.6 ) page: pp.1541-1549   2003.6

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  188. A Study on Turbo Soft-Decision Decoding for Hard Detected Optical Communication Signals Reviewed

    "C. Zheng, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.E86-B ( no.3 ) page: pp.1022-1030   2003.3

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  189. Soft-Decision Decoding of Low-Density Parity-Check Codes for Hard-Detected Optical Communication Signals Reviewed

    "C. Zheng, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.E86-B ( no.3 ) page: pp.1132-1135   2003.3

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  190. Noise analysis on wide-band PLC with high sampling rate and long observation time Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato and M. Katayama"

    7th International Symposium on Power-Line Communications and Its Applications     page: pp.142-147   2003.3

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  191. Signaling methods for broadcast transmission in power-line communication systems Reviewed

    H. Furukawa, H. Okada, T. Yamazato, M. Katayama

    IEEE International Symposium on Power Line Communications and Its Applications 2003     page: pp.185-190   2003.3

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  192. Performance Analysis of CDMA Unslotted ALOHA System Employing Successive Interference Cancellation Reviewed

    "Yukihiro TADOKORO, Hiraku OKADA, Takaya YAMAZATO, Masaaki KATAYAMA,"

    IEICE Transactions on Fundamentals   Vol. vol.J86-A ( no.2 ) page: pp.168-178   2003.2

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  193. Comparison of Multiple Access Schemes in Multibeam Non-GEO Satellite Communication Systems Reviewed

    "N. Ichikawa, M. Katayama, H. Okada, T. Yamazato, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.E86-B ( no.2 ) page: pp.785-791   2003.2

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  194. Medium Access Control Protocol Based on Estimation of Multimedia Traffic with an Adaptive Algorithm in CDMA Packet Communications Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato, and M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.E85-A ( no.12 ) page: pp.2868-2876   2002.12

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  195. A Study on the Application of Error Concealment Technique to Real-Time Parallel Video Decoder Reviewed

    "M. Honjo, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J85-A ( no.12 ) page: pp.1463-1468   2002.12

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  196. Performance Improvement of OFDM System with Consideration on the Characteristics of Power-Line Noise Reviewed

    "K. Sugimoto, H. Okada, T. Yamazato, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.E85-A ( no.12 ) page: pp.2822-2829   2002.12

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  197. Decoding of low-density parity-check codes for hard-detected optical fiber communication signals Reviewed

    "C. Zheng, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    International Symposium on Information Theory and Its Applications     page: pp.331-334   2002.10

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  198. Spread Sequence for Multicarrier CDMA under the Effect of Nonlinear Amplifier Reviewed

    "M. Harada, T. Yamazato, H. Okada, and M. Katayama"

    International Symposium on Information Theory and Its Applications     page: pp.435-438   2002.10

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  199. An access control protocol based on estimation of multimedia traffic with an adaptive algorithm in CDMA packet network Reviewed

    "Y. Hirayama, H. Okada, T. Yamazato, M. Katayama"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.2   page: pp.619-623   2002.9

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  200. Reduced Peak Power Transmission for Convolutionally Coded OFDM Signals Reviewed

    "M. Harada, T. Yamazato, H. Okada, and M. Katayama"

    7th International-OFDM Workshop 2002     page: pp.102-106   2002.9

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  201. Effect of Interleaving and FEC on the Throughput of CDMA Unslotted ALOHA System with Adaptive Multiuser Receiver Reviewed

    "H. Okada, T. Yamazato, M. Katayama"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.2   page: pp.941-945   2002.9

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  202. BER Performance of Asynchronous Multicarrier-CDMA System and Asynchronous DS-CDMA System in Frequency Selective Fading Reviewed

    "H. Takeuchi, T. Yamazato, H. Okada, and M. Katayama"

    7th International-OFDM Workshop 2002     page: pp.26-30   2002.9

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  203. New Analytical Model for TCP in wireless Environments Reviewed

    "K. Naito, H. Okada, M. Saito, T. Yamazato, and M. Katayama"

    IEICE Transactions on Fundamentals Vol.E85-A No.7   Vol. vol.E85-A ( no.7 ) page: pp.1501-1510   2002.7

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  204. Turbo Decoding for Hard-Detected Signals of Fiber Optical Communications Reviewed

    "C. Zheng, T. Yamazato, H. Okada, M. Katayama, and A. Ogawa"

    IASTED Wireless and Optical Communications 2002 (WOC 2002) Conference     page: N/A   2002.7

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  205. Performance Evaluation of PredictionError Based MAP Receiver for DCT Compressed Image Transmission Reviewed

    "S. Makido, M. Honjo, T. Yamazato, H. OKada, M. Katayama, A. Ogawa"

    The Journal of the Institute of Television Engineers of Japan   Vol. vol.56 ( no.5 ) page: pp.842-845   2002.5

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  206. A study on SOVA based Turbo-decoding with threshold Reviewed

    "M. Matsui, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J85-A ( no.5 ) page: pp.606-609   2002.5

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  207. CDMA Packet Recognition and Signal Acquisition using LMS-based Adaptive Receiver Reviewed

    "T. Kume, T. Yamazato, K. Ban, H. Okada, and M. Katayama"

    IEEE Wireless Communications and Networking Conference   Vol. vol.1   page: pp.379-383   2002.3

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  208. Effect of Nonlinear Amplifiers of Transmitters in Multicarrier CDMA Systems Reviewed

    "H. Muramatsu, M. Harada, T. Yamazato, H. Okada, M. Katayama"

    IEICE Transactions on Fundamentals   Vol. vol.J85-A ( no.3 ) page: pp.340-348   2002.3

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  209. Performance Improvement of In-House Power-Line for Communication Reviewed

    H. Furukawa, M. Wasaki, M. Katayama, S. Tsuzuki

    IEEE International Symposium on Power Line Communications and Its Applications     page: pp.60-64   2002.3

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  210. The Real-Time Parallel Video Decoder Considered on the Complexity and Delay of Error Correcting Decoding Reviewed

    "M. Honjo, S. Makido, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J85-A ( no.2 ) page: pp.214-230   2002.2

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  211. "Novel Configuration of CMA Adaptive Array for Beamforming, Equalization and Despreading of SS Signals" Reviewed

    "Y. Kamiya, S. Denno, Y. Mizuguchi, M. Katayama, A. Ogawa, Y. Karasawa"

    IEICE Transactions on Fundamentals   Vol. vol.J85-A ( no.1 ) page: pp.31-41   2002.1

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  212. "[Invited Paper] Introduction to Robust, Reliable, and High-Speed Power-Line Communication Systems" Invited Reviewed

    M. Katayama

    IEICE Transactions on Fundamentals   Vol. vol.E84-A ( no.12 ) page: pp.2958-2965   2001.12

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  213. A New Packet Detection Scheme in CDMA Unslotted ALOHA System with Successive Interference Cancellation Reviewed

    "Y. Tadokoro, H. Okada, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Communications Conference   Vol. vol.5   page: pp.3173-3177   2001.11

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  214. Hierarchical Transmission of Video Signal Using Multi-Code DS/SS Modulation Based on DCT Coefficients Reviewed

    "M. Honjo, S. Makido, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    IEEE Global Communications Conference   Vol. vol.6   page: pp.3395-3399   2001.11

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  215. An Adaptive Antenna Selection Scheme for Transmit Diversity in OFDM Systems Reviewed

    H. Shi M. Katayama T. Yamazato H.Okada and A.Ogawa

    IEEE Vehicular Technology Conference   Vol. vol.4   page: pp.2168-2172   2001.10

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  216. A Study on High Rate Serially Concatenated Coding Scheme for Optical Communication Systems Reviewed

    "C. Zheng, T. Yamazato, M. Katayama and A. Ogawa"

    "International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC)"     page: N/A   2001.7

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  217. BER Analysis for Multi-carrier DS CDMA with Multi-rate Traffic Reviewed

    "A. Sandouk, M. Harada, H. Okada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol. E84-A ( no. 7 ) page: pp.1723-1731   2001.7

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  218. Comparison of CDMA and FDMA/TDMA in non-GEO Satellite Systems Reviewed

    "N. Ichikawa, M. Katayama, H. Okada, T. Yamazato, and Akira Ogawa"

    IEEE International Conference on Communications     page: pp.3167-3171   2001.6

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  219. A MAP Receiver Based on Prediction Error Reviewed

    "S. Makido, T. Yamazato, H. Okada, M. Katayama, A. Ogawa"

    The Journal of the Institute of Television Engineers of Japan   Vol. vol.55 ( no.6 ) page: pp.886-893   2001.6

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  220. QoS and capacity comparison of CDMA ALOHA protocols in multimedia networks Reviewed

    "A. Sandouk, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol. E84-B ( no. 6 ) page: pp. 1588-1595   2001.6

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  221. A Design of Source Matched MAP Receiver for Image Transmission Reviewed

    "S. Makido, T. Yamazato, H. Okada, M. Katayama, and A. Ogawa"

    IEEE International Symposium on Circuit and Systems   Vol. vol.IV   page: pp.136-139   2001.5

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  222. New Analytical Model for the TCP Throughput in Wireless Environment Reviewed

    "K. Naito, H. Okada, T. Yamazato, M. Katayama, and A. Ogawa"

    IEEE Vehicular Technology Conference   Vol. vol.3   page: pp.2128-2132   2001.5

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  223. Performance of an OFDM Communication Systemunder a Frequency and Time Dependent Power-Line Channel Reviewed

    "K. Sugimoto, M. Katayama, T. Yamazato, H. Okada"

    5th International Symposium on Power-line Communications and Its Applications     page: pp35-40   2001.4

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  224. Broad Band Software-Defined Radio Receivers Based on Superconductive Devices Reviewed

    "A. Fujimaki, K. Nakazono, H. Hasegawa, T. Sato, A. Akahori, N. Takeuchi, F. Furuta, M. Katayama, H. Hayakawa"

    IEEE Trans. Applied Superconductivity   Vol. vol.11 ( no.1 ) page: pp.318-321   2001.3

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  225. Joint Multi-dimensional Channel Parameter Estimation Schemes for DS-CDMA Systems Using a Modified version of the SAGE Algorithm Reviewed

    "Y. R. Senhaji, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.E84-B ( no.3 ) page: pp.511-519   2001.3

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  226. Generation of Sets of Sequences Suitable for MulticodeTransmission in Quasi-Synchronous CDMA Systems Reviewed

    "M. Saito, H. Okada, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transactions on Communications   Vol. vol. E84-B ( no. 3 ) page: pp.576-580   2001.3

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  227. Throughput Performance of CDMA Slotted ALOHA Systems Based on Average Packet Success Probability Considering Bit-to-Bit Dependence Reviewed

    "M. Saito, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.E84-A ( no.2 ) page: pp.653-659   2001.2

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  228. Study on TCP throughput with FEC and ARQ in a wireless link Reviewed

    "K. Naito, H. Okada, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J84-A ( no.1 ) page: pp.122-126   2001.1

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  229. Modified HPSK Modulation Scheme for Wideband CDMA Systems Reviewed

    "A. Fujiwara, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.J83-A ( no.12 ) page: pp.1552-1557   2000.12

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  230. Development of an Adaptive Array Based on Subband Signal Processing Reviewed

    "Y. Kamiya, S. Denno, Y. Mizuguchi, M. Katayama, A. Ogawa, Y. Karasawa"

    IEICE Transactions on Fundamentals   Vol. vol.J83-A ( no.12 ) page: pp.1413-1424   2000.12

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  231. A New Diversity Reception and Decoding Scheme for Convolutional Encoded Signal Reviewed

    "W.Z. Wang, T. Yamazato, C. Zheng, H. Okada, M. Katayama, and A. Ogawa"

    International Symposium on Information Theory and Its Applications     page: pp.964-967   2000.11

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  232. Throughput Performance of CDMA Unslotted ALOHA System with Successive Interference Cancellation considering Detection Error of Packet Existance Reviewed

    "Y. Tadokoro, H. Okada, M. Saito, T. Yamazato, M. Katayama, A. Ogawa"

    International Symposium on Information Theory and Its Applications     page: pp. 728-731   2000.11

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  233. Efficient Channel Parameter Estimators for DS-CDMA Systems in Slow Time-Varying Channels Using a Modified version of the SAGE Algorithm Reviewed

    "Y. R. Senhaji, T. Yamazato, M. Katayama, and A. Ogawa"

    IEEE Global Communications Conference   Vol. vol.3 ( no.3 ) page: pp.1483-87   2000.11

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  234. An Initial Code Acqusition Scheme for Indoor Packet DS/SS Systems with Macro/Micro Antenna Diversity Reviewed

    "Y. Ikai, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E83-A ( no.11 ) page: pp. 2070-2077   2000.11

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  235. An Access Control Protocol for a Heterogenous Traffic with a Multi-Code CDMA Scheme Reviewed

    "A. Sandouk, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.E83-A ( no.11 ) page: pp.2085-2092   2000.11

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  236. New Analytical Model for the TCP Algorithms Over Wireless Links with Random Losses Reviewed

    "K. Naito, H. Okada, M. Saito, T. Yamazato, M.Katayama, and A. Ogawa"

    Mobile Multimedia Communications(MoMuC2000)     page: pp.4B-4-1 -- 4B-4-6   2000.10

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  237. A Study on Reducing the Nonlinear Distortion in Multicarrier Systems Reviewed

    "M. Harada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transactions on Fundamentals   Vol. vol.E83-a ( no.10 ) page: pp.1992-1995   2000.10

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  238. An OFDM System with Reduced Non-linear Effect Reviewed

    "M. Harada, T. Yamazato, H. Okada, M. Katayama, and A. Ogawa"

    IEEE Vehicular Technology Conference     page: pp.1794-1798   2000.9

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  239. Performance Evaluation of Modified HPSK for Wideband CDMA Reviewed

    "T. Yamazato, A. Fujiwara, M. Katayama and A. Ogawa"

    IEEE International Symposium on Spread Spectrum Techniques and Applications   Vol. Vol.F3B.5   page: pp.751-755   2000.9

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  240. OFDM Systems with Multiple Trellis Coded Modulation Reviewed

    "M. Harada, T. Yamazato, M. Katayama, and A. Ogawa"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.1   page: pp. 814-818   2000.9

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  241. Hierarchical Channel Structure to Improve Handover Performance of LEO Satellite Communication Systems Reviewed

    "T. Hara, M. Katayama, H. Okada, T. Yamazato, A. Ogawa"

    Third European Workshop on Mobile/Personal Satcoms     page: pp.215-220   2000.9

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  242. Development of an Adaptive Array Based on Subband Signal Processing Reviewed

    "Y. Kamiya, S. Denno, Y. Mizuguchi, M. Katayama, A. Ogawa, Y. Karasawa"

    "International Symposium on Antennas, Propagation and EM Theory Proceedings"     page: pp. 243-246   2000.8

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  243. Joint Optimization of Transmitter/Receiver with Multiple Transmit/Receive Antennas in Band-limited Channels Reviewed

    "K. Ban, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transactions on Communications   Vol. vol.E83-B ( no.8 ) page: pp.1697-1704   2000.8

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  244. Introduction of Superconductor Technology to oftware-Defined-Radio Base-Station Invited Reviewed

    "A. Fujimaki, M.Katayama"

    IEICE Transaction   Vol. vol.J83-C ( no.7 ) page: pp. 589-595   2000.7

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  245. A Study on Cross-Correlation Property in Orthogonal Multi-Code CDMA Systems Reviewed

    "A. Fujiwara, T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    IEIEC Transaction on Fundamentals   Vol. vol.J83-A ( no.5 ) page: pp.589-593   2000.5

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  246. Effects of Cell Structure on Quality of Service of LEOS Communication Systems Reviewed

    "K.Ono, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E83-B ( no.4 ) page: pp.782-790   2000.4

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  247. Modeling of Cyclostationary and Frequency Dependent Power-Line Channels for Communications Reviewed

    "M. Katayama, S. Itou, T.Yamazato, A. Ogawa"

    THE 4th International Symposium on Power-Line Communications and its Applications     page: N/A   2000.4

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  248. New Configuration of Full-Blind CMA Adaptive Array Applicable to Spread Spectrum Systems Reviewed

    "Y. Kamiya, M. Katayama, A. Ogawa, Y. Karasawa"

    "Millennium Conference on Antennas and Propagation,published in CD-ROM"     page: N/A   2000.4

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  249. Decorrelating Detector for Multi-Processing Gain CDMA Systems Reviewed

    "H. Hiraiwa, M. Katayama,T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E82-A ( no.12 ) page: pp.2774-2777.   1999.12

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  250. Advanced Base-Station Based on Superconductive Devices and Software-Defined Radio Technology Reviewed

    "A. Fujimaki, M. Katayama, T. H. Hayakawa, A. Ogawa"

    Supercond.Sci.Technol   Vol. vol.12 ( nol ) page: pp.708-710   1999.12

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  251. Adaptive Array Antennas for the Base Station of a Multi Processing Gain CDMA System Reviewed

    "A. Morimoto, M. Katayama,T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E82-A ( no.12 ) page: pp.2687-2696   1999.12

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  252. Chip-by-Chip Turbo Coding for DS/SS Systems Reviewed

    "C. Zheng, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E82-A ( no.12 ) page: pp.2751-2757   1999.12

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  253. Code Acquisition of a DS/SS Signal with Transmit and Receive Antenna Diversity Reviewed

    "Y. Ikai, M. Katayama,T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E82-A ( no.12 ) page: pp.2728-2734   1999.12

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  254. Influence of Beam Pattern on the Capacity of LEOS Communication Systems Reviewed

    "N. Ichikawa, M. Katayama T. Yamazato and A. Ogawa"

    International Symposium on Communications     page: N/A   1999.11

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  255. An Integrated Voice/Data CDMA Packet Communications with Multi-Code CDMA Scheme Reviewed

    "A. Sandouk, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E82-A ( no.10 ) page: pp.2105-2114   1999.10

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  256. A Scheme for Throughput Improvement in Voice/Data CDMA Packet Communications Reviewed

    "A. Sandouk, T. Yamazato, M. Katayama, and A. Ogawa"

    IEEE Vehicular Technology Conference     page: pp.362-366   1999.9

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  257. Transmitter Precoding with Multiple Transmit/Receive Antennas for High Date Rate Communication in Bandwidth-limited Channels Reviewed

    "K. Ban, M. Katayama, T. Yamazato, and A. Ogawa"

    IEEE Vehicular Technology Conference Fall     page: pp.1946-1950   1999.9

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  258. Throughput Performance of CDMA Slotted ALOHA Systems with Accurate Packet Success Probability Reviewed

    "M. Saito, T. Yamazato, M. Katayama, and A. Ogawa"

    The Second International Symposium on Wireless Personal Multimedia Communications (WPMC'99)   Vol. vol.1 ( no.9.5 ) page: pp. 354-359   1999.9

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  259. Performance Improvements applying an Adaptive Array Antenna at both the Base and Mobile Stations in Cellular CDMA Reviewed

    "Youssef R. Senhaji, H. Okada, T. Yamazato, M. Katayama and A. Ogawa"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.3   page: pp.982-986   1999.9

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  260. Error Resilient Video Coding System for Wireless Communication -Using Motion Compensted Field Reviewed

    "M. Honjo, S. Makido, T. Yamazato, M. Katayama and A. Ogawa"

    The Second International Symposium on Wireless Personal Multimedia Communications (WPMC'99)   Vol. vol. 1 ( no. 4.2 ) page: pp. 214-218   1999.9

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  261. Acquisition of a DS/SS Signal with Macro/Micro Antenna Diversity under Rayleigh Fading and Log-normal Shadowing Reviewed

    "Y. Ikai, M. Katayama, T. Yamazato and A. Ogawa"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: pp.1526-1530   1999.9

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  262. A New Acquisition Scheme of a DS/SS Signal with Transmit and Receive Antenna Diversity Reviewed

    "Y. Ikai, M. Katayama, T. Yamazato and A. Ogawa"

    IEEE International Conference on Communications     page: pp.1256-1261   1999.6

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  263. Throughput Improvement of a Dual-Class Multi-code CDMA ALOHA System with Modified Channel Load Sensing Protocol Reviewed

    "A. Sandouk, H. Okada, T. Yamazato, M. Katayama, and A. Ogawa"

    IEEE International Conference on Communications     page: pp.1079-1083   1999.6

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  264. Hirarchical Transmission of Huffman Code Using Multi-Code/Multi-Rate DS/SS Modulation with appropriate Power Control Reviewed

    "A. Makido, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E81-B ( no.12 ) page: pp.2283-2289   1998.12

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  265. Tutorial : Introduction to CDMA ALOHA Reviewed

    "T. Yamazato, A. Ogawa, M. Katayama and A. Jamalipour"

    "Tutorial Note, TI-13, 1998 IEEE Global Telecommunications Conference"     page: N/A   1998.11

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  266. Performance of a LEOS Communication System with Overlaid and Overlapped Cell Arrangement Reviewed

    "K.Ono, M.Katayama, T.Yamazato and A.Ogawa"

    Third European Workshop on Mobile/Personal Satcoms   Vol. vol.1   page: pp.131-145   1998.11

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  267. Performance Evaluation of DS/CDMA Communications Systems Modulated with pi/2-Shift BPSK over Multipath Rayleigh Fading Channels Reviewed

    "A. Galib, T. Yamazato, M. Katayama and A. Ogawa"

    "1998 IEEE Global Telecommunications Conference, Sydney, Communications Theory Mini"     page: N/A   1998.11

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  268. Performance Evaluation of DS/CDMA Communications Systems Modulated with pi/2-Shift BPSK over Multipath Rayleigh Fading Channels Reviewed

    "A. Galib, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.11 ) page: pp.2304-2310   1998.11

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  269. New Quasi-Synchronous Sequences for CDMA Slotted ALOHA Systems Reviewed

    "M. Saito, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.11 ) page: pp.2274-2280   1998.11

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  270. Initial Acquisition of Code Timings and Carrier Frequencies of CDMA Downlink Signals in Multiple-LEO-Satellite Communication Systems Reviewed

    "M. Ishizu, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.11 ) page: pp.2281-2290   1998.11

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  271. Hierarchical Transmission System using Multi-Code/Multi-Rate DS/SS Modulation Reviewed

    "T. Yamazato, S. Makido, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference   Vol. vol.4   page: pp.2147-2152   1998.11

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  272. Evaluation of the Interference with Small Number of Users in Orthogonal Multi-Code CDMA Systems Reviewed

    "A. Fujiwara, T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    International Symposium on Wireless Personal Multimedia Communications   Vol. vol.1   page: pp.422-427   1998.11

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  273. An Access Control Scheme Based on Transmit Power for CDMA ALOHA System under a Cellular Environment Reviewed

    "Y. Asai, T. Yamazato, M. Katayama and A. Ogawa"

    International Symposium on Information Theory and Its Applications   Vol. vol.2   page: pp.491-494   1998.10

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  274. Queueing Analysis of CDMA Unslotted ALOHA Systems with Finite Buffers Reviewed

    "H. Okada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.10 ) page: pp.2083-2091   1998.10

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  275. Quasi-Synchronous CDMA Slotted ALOHA System Through Flat Fading Channel Reviewed

    "Masato Saito, Takaya Yamazato, Masaaki Katayama, Akira Ogawa"

    The 1998 International Symposium on Information Theory and its Applications(ISITA'98)   Vol. FA4-3 ( vol.2 ) page: pp.487-490   1998.10

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  276. Error Correcting Capability of Constant Amplitude Coding for Orthgonal Multi-Code CDMA Systems Reviewed

    "T. Wada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.10 ) page: pp.2166-2169   1998.10

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  277. CDMA Unslotted ALOHA Systems with Finite Buffers Reviewed

    "H. Okada, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE International Conference on Universal Personal Communications   Vol. vol.2   page: pp.1143-1147   1998.10

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  278. Effect of Nonlinear Amplification on Multi-Code DS/SS System Reviewed

    "T. Yamazato, A. Fujiwara, M. Katayama, A. Ogawa"

    International Symposium on Nonlinear Theory and its Applications     page: pp.1233-1236   1998.9

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  279. Access Control Techniques for CDMA ALOHA Reviewed

    "T. Yamazato, H. Okada,M. Katayama and A. Ogawa"

    IEEE Fifth International Symposium on Spread Spectrum Techniques & Applications   Vol. vol.1   page: pp.293-297   1998.9

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  280. Problems of Implementing Adaptive Array Antennas in CDMA Systems Reviewed

    "A. Morimoto, M. Katayama, T. Yamazato and A. Ogawa"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"   Vol. vol.3   page: pp1422-1426   1998.9

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  281. Performance Analysis of an Integrated Voice and Data CDMA System Reviewed

    "T. Sato, A. Sandouk, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.J81-B-II ( no.08 ) page: pp.733-741   1998.8

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  282. CDMA Slotted ALOHA System with Finite Buffers Reviewed

    "H. Okada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E81-A ( no.7 ) page: pp.1473-1478   1998.7

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  283. Throughput Analysis for CDMA Unslotted ALOHA Systems with Finite Population Assumption Reviewed

    "H. Okada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.J81-A ( no.7 ) page: pp.1089-1092   1998.7

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  284. Queueing Analysis of CDMA Slotted ALOHA Systems with Finite Buffer and Finite Population Assumptions Reviewed

    "H. Okada, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE International Conference on Communications   Vol. vol.1   page: pp.407-411   1998.6

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  285. A Simple Model of Cyclostationary Power-line Noise for Communication Systems Reviewed

    "O. Ohno, M. Katayama, T. Yamazato and A. Ogawa"

    International Symposium on Power-Line Communications and its Applications     page: pp.115-222   1998.3

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  286. * [Invited Paper] CDMA for Personal Communications Based on Low Earth Orbital Satellite Systems Invited Reviewed

    "A. Ogawa, M. Katayama, T. Yamazato, A. Jamalipour"

    IEICE Transaction on Fundamental   Vol. vol.E80-A ( no.12 ) page: pp.2347-2356   1997.12

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    "This paper is concerned with CDMA applied to personal and mobile communications on a global basis using multiple low earth orbital satellites (LEOS). We focus our attention on some unique aspects of LEOS systems and discuss their influences on the CDMA system performance as well as the techniques for coping with these aspects. We deal with three kinds of important items that are unique to LEOS systems; Doppler frequency shift due to satellite movement, propagation delay affecting packetized data transmission and geographical nonunifomity in traffic."

  287. A Constant Amplitude Coding for Orthogonal Multi-Code CDMA Systems Reviewed

    "T. Wada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.12 ) page: pp.2477-2484   1997.12

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  288. Multi-Antenna Transmission Scheme for Convolutionally Coded DS/CDMA System Reviewed

    "K. Ban, M. Katayama, W .E .Stark, T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.12 ) page: pp.2437-2444   1997.12

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  289. Influence of Multiple-Access Interference in a Multi Processing-Gain SSMA System Reviewed

    "H. Hiraiwa, M. Katayama, T. Yamazato and A. Ogawa"

    Asia-Pacific Conference on Communications   Vol. vol.3   page: pp.1611-1615   1997.12

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  290. Effects of Transmission Control in an Integrated Voice and Data CDMA System Reviewed

    "T. Sato, S. Abbas, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.12 ) page: pp.2500-2516   1997.12

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  291. Constant Amplitude Orthogonal Multi-Code CDMA System Reviewed

    "T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    Asia-Pacific Conference on Communications   Vol. vol.1   page: pp.362-366   1997.12

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  292. A Spread-Spectrum System with Dual Processing Gains Designed for Cyclic Noise in Power Line Communications Reviewed

    "H. Niwa, O. Oono, M. katayama, T. Yamazato, A. Ogawa, N. Isaka"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.12 ) page: pp.2526-2533   1997.12

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  293. A Simple Transmit/Receive Antenna Diversity for Indoor DS/CDMA Wireless Communication Systems Reviewed

    "K. Ban, M. Katayama, T. yamazato and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E80-B ( no.12 ) page: pp.1790-1796   1997.12

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  294. A Proposal of SS Communication System Using LEO Satellite for Observing Ecology of Sea Turtle Reviewed

    "T. Tokuyasu, T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Communications Conference     page: pp.1157-1161   1997.11

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  295. "Convolutionally Coded DS/CDMA System using Multi-Antenna Transmission," Reviewed

    "K.Ban, M.Katayama, W.E.Stark, T.Yamazato and A.Ogawa"

    IEEE Global Telecommunications Conference   Vol. vol.1   page: pp.92-96   1997.11

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  296. System Capacity of an Integrated Voice and Data CDMA Network in Channel Load Sensing Protocol Reviewed

    "T. Sato, S. Abbas, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference     page: pp.899-903   1997.11

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  297. Effects of Transmission Control Considering Voice Activation in an Integrated Voice and Data CDMA System Reviewed

    "T. Sato, S. Abbas, T. Yamazato, M. Katayama and A. Ogawa"

    1997 Fourth European Conference on Satellite Communications     page: pp.176-181   1997.11

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  298. An Initial Acquisition Method for M-ary Spread-Spectrum Signals Using Hadamard Code Sequences Reviewed

    "T. Wada, T. Yamazato, M. Katayama,A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.11 ) page: pp.2172-2179   1997.11

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  299. pi/2-shift BPSK - A Modulation Scheme Robust to Nonlinear Amplification for CDMA Mobile Communication Reviewed

    "K. Kashyap, T. Wada, M. Katayama, T .Yamazato, A .Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E80-A ( no.9 ) page: pp.1634-1639   1997.9

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  300. Simultaneous Estimation of Code and Frequency of DS/SS Signals of Multiple-LEO-Satellite Communication Systems Reviewed

    "M. Ishidu, M. Katayama, T. Yamazato and A. Ogawa"

    "IEEE International Symposium on Personal, Indoor and Mobile Radio Communication"     page: pp.1019-1027   1997.9

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  301. Performance Analysis of CDMA-Unslotted ALOHA Operating over CDMA Voice Signals Reviewed

    "A. Sandouk, T. Sato, T. Yamazato, M. Katayama and A. Ogawa"

    "IEEE Pacific Rim Conference on Communications, Computers and Signal Processing"     page: pp.603-606   1997.8

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  302. Effect of Non-uniform Traffic and Power Control on CDMA Unslotted ALOHA system Reviewed

    "T. Yamazato, Y. Asai, M. Katayama and A. Ogawa"

    "1997 International Technical Conference On Circuits/Systems, Computers And Communications"   Vol. vol.2   page: pp.857-860   1997.7

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  303. Performance Analysis of Integrated Voice and Data System in CDMA Unslotted ALOHA with Channel Load Sensing Reviewed

    "T. Sato, S. Abbas, T. Yamazato, M. Katayama and A. Ogawa"

    "1997 International Technical Conference On Circuits/Systems, Computers And Communications"   Vol. vol.2   page: pp.853-856   1997.7

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  304. Traffic Characteristics of the LEOS-Based Global Personal Communications Networks Reviewed

    "A. Jamalipour, A. Ogawa"

    IEEE Communications Magazine   Vol. vol.35 ( no.2 ) page: pp.118-122   1997.2

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  305. An Improvement of Performance of DS/SS/CDMA with GMSK Reviewed

    "T. Ishiguro, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.J80-B-II ( no.1 ) page: pp.18-26   1997.1

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  306. Bit Interleaved Trellis Coded 16DAPSK on Fading Channels Reviewed

    "H. Nakagawa, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.J80-B-II ( no.1 ) page: pp.1-9   1997.1

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  307. Throughput Improvement of CDMA Slotted ALOHA System Reviewed

    "M. Saito, H. Okada, T. Sato, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E80-B ( no.1 ) page: pp.74-80   1997.1

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  308. An Analytically Estimation of DS/SS/CDMA Using GMSK Reviewed

    "T. Ishiguro, T. Yamazato, M. Katayama, and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.J80-B-II ( no.1 ) page: pp.131-136   1997.1

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  309. CDMA ALOHA Systems with Modified Channel Load Sensing Protocol for Satellite Communications Reviewed

    "H. Okada, M. Saito, T. Sato, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E79-A ( no.12 ) page: pp.2035-2042   1996.12

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  310. Transmission Characteristics of Band-Limited Signals for DS/SS/CDMA Reviewed

    "A. Ogawa, K. Kashyap, T. Wada, M. Katayama and T. Yamazato"

    1996 Asia-Pacific Microwave Conference   Vol. vol.4 ( E12.INV2 ) page: pp.1329-1332   1996.12

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  311. Transmit Permission Control on Spread ALOHA Packets in LEO Satellites Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato, A. Ogawa"

    IEEE Journal on Selected Areas in Communications   Vol. vol.14 ( no.9 ) page: pp.1748-1757   1996.12

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  312. DS/SS/GMSK with Differential Detection over Multipath Rayleigh Fading Channels Reviewed

    "I. Wakaki, T. Ishiguro, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E79-A ( no.12 ) page: pp.1957-1962   1996.12

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  313. A New M-ary/SSMA Scheme Applicable in LEO Satellite Systems Reviewed

    "T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference   Vol. vol.1   page: pp.384-389   1996.11

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  314. Performance Evaluation of CDMA ALOHA Systems with Modified Channel Load Sensing Protocol Reviewed

    "H. Okada, M. Saito, T. Sato, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference   Vol. vol.2   page: pp.1291-1295   1996.11

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  315. The DS/CDMA System using Transmission Diversity for Indoor Wireless Communications Reviewed

    "K. Ban, M. Katayama, T. Yamazato and A. Ogawa"

    "7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications"   Vol. vol.2   page: pp.802-812   1996.10

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  316. A New Acquisition Scheme for the DS/SS Signal with Large Carrier Frequency Offset Reviewed

    "S. Okuda, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.J79-A ( no.10 ) page: pp.1725-1733   1996.10

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  317. Throughput Improvemnt on CDMA Slotted ALOHA Systems by Modified Channel Load Sensing Protocol Reviewed

    "M. Saito, H. Okada, T. Sato, T. Yamazato, M. Katayama and A. Ogawa"

    "7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '96)"   Vol. vol. 1 ( no. C1.5 ) page: pp.103--107   1996.10

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  318. The Receiver with an Adaptive Array Antenna and Satellite Diversity for Low Earth-Orbital Multiple Satellite Communication Systems Reviewed

    "H. Sumino, M. Katayama, T. Yamazato and A. Ogawa"

    Second European Workshop on Mobile/Personal Satcoms     page: pp.180-194   1996.10

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  319. The Performance of CDMA System Using π/4-shift QPSK and π/2-shift BPSK with the Nonlinearity of HPA Reviewed

    "K. Kashyap, T. Wada, M. Katayama, T. Yamazato and A. Ogawa"

    "7th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications"     page: pp.492-496   1996.10

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  320. A New Initial Acquisition Methods for M-ary Spread-Spectrum Communication Systems Reviewed

    "T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    The 1996 International Symposium on Information Theory and Its Applications     page: pp.770-773   1996.9

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  321. Effects of Multiple Access Interference in a Multi-Rate SSMA System Reviewed

    "M. Ichiba, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E79-B ( no.9 ) page: pp.1333-1338   1996.9

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  322. DS/SS/GMSK with Differential Detection over Multipath Rayleigh Fading Channels Reviewed

    "I. Wakaki, T. Ishiguro, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Fourth International Symposium on Spread Spectrum Techniques & Applications     page: pp.399-403   1996.9

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  323. Coordinate Interleaving Trellis Coded QPSK with T-algorithm on Rayleigh Fading Cannels Reviewed

    "H. Nakamura, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E79-B ( no.9 ) page: pp.1248-1255   1996.9

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  324. A Spread-Spectrum System with Dual Processing Gains Designed for Cysric Noise in Power line Communications Reviewed

    "H. Niwa, M. Katayama, T. Yamazato, A. Ogawa and N. Isaka"

    IEEE Fourth International Symposium on Spread Spectrum Techniques & Applications     page: pp.816-820   1996.9

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  325. A New M-ary Spread-Spectrum Multiple-Access Scheme in the Presence of Carrier Frequency Offset Reviewed

    "T. Wada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E79-A ( no.9 ) page: pp.1415-1422   1996.9

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  326. Performance Degradation due to the Access Timing Delay on CDMA Unslotted ALOHA with Channel Load Sensing Reviewed

    "T. Sato, H. Okada, T. Yamazato, M. Katayama and A. Ogawa"

    5th IEEE International Conference on Universal Personal Communications   Vol. vol.1   page: pp.111-114   1996.9

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  327. Throughput of CDMA Unslotted-ALOHA System in Cellular Environment Reviewed

    "A. Ogawa, T. Yamazato, K. Nishida, H. Okada, T. Sato and M. Katayama"

    Japan-Canada International Workshop on Multimedia Wireless Communications and Computing     page: pp.23-24   1996.9

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  328. Effects of the Access Timing Delay on CDMA Unslotted ALOHA with Channle Load Sensing Reviewed

    "T. Sato, H. Okada, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E79-B ( no.9 ) page: pp.1339-1345   1996.9

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  329. Performance of Bit-by-Bit Interleaved Trellis Coded 16DAPSK on Rayleigh Fading Channel Reviewed

    "T. Yamazato, H. Nakagawa, M. Katayama and A. Ogawa"

    5th IEEE International Conference on Universal Personal Communications     page: pp.543-547   1996.9

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  330. On the Average Delay-Throughput Performance Improvement of LEO Satellite Systems by Adaptive Transmit Permission Control Scheme Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    XXVth General Assembly of the International Union of Radio Science   Vol. C8.3   page: p157   1996.8

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  331. A Novel Access Control Method for CDMA Unslotted ALOHA Systems Reviewed

    "H. Okada, T. Sato, T. Yamazato, M. Katayama and A. Ogawa"

    The 2nd International Workshop on Multi-Dimensional Mobile Communications     page: pp.391-395   1996.7

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    Language:English  

  332. CDMA Unslotted ALOHA Systems with Packet Retransmission Control Reviewed

    "H. Okada, T. Sato, T. Yamazato, M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E79-A ( no.7 ) page: pp.1004-1010   1996.7

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  333. Throughput Performance Improvement of Spread-Slotted Aloha in Mobile Satellite Communications Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    International Conference on Communications     page: pp.1740-1744   1996.6

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    Language:English  

  334. Throughput Analysis of DS/SSMA Unslotted Aloha with Fixed Packet Length Reviewed

    "T. Sato, H. Okada, T. Yamazato,M. Katayama, A. Ogawa"

    IEEE Journal on Selected Areas in Communications   Vol. vol.14 ( no.4 ) page: pp.750-756   1996.5

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  335. A Block Demodulator for Low Earth-Orbital Satellite Communication System with Large Doppler Shift Reviewed

    "M. Ise, M. Katayama, T. Yamazato and A. Ogawa"

    1996 IEEE Vehicular Technology Conference(not included in proceedings)     page: N/A   1996.4

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  336. Adaptive Transmit Permission Control on Spread-Slotted Aloha Packets Applicable in LEO Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E79-B ( no.3 ) page: pp.257-265   1996.3

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  337. Quasi-Synchronous CDMA with Binary Shift-Register Sequences Reviewed

    "S. Kuno, T. Yamazato,M. Katayama, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.J79-A ( no.1 ) page: pp.105-114   1996.1

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  338. Parallel Acquisition of a Direct-Sequence Spread-Spectrum Signal with Frequency Offset Reviewed

    "M. Mizutani, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.J79-A ( no.1 ) page: pp.98-104   1996.1

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  339. A Modified Power Control Scheme for Remedying the Effects of Traffic Nonuniformity in LEO Satellite Communications Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato, A. Ogawa"

    IEEE International Journal of Wireless Information Networks   Vol. vol.3 ( no.1 ) page: pp.29-39   1996.1

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  340. A Study on Improvement of Performance of CDMA with DS/SS/GMSK Reviewed

    "T. Ishiguro, T. Yamazato, M. Katayama and A. Ogawa"

    1995 International Symposium on Communications     page: pp.605-612   1995.12

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    Language:English  

  341. Throughput Analysis of Spread-Slotted ALOHA in LEO Satellite Communication Systems with Nonuniform Traffic Distribution Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato, A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E78-B ( no.12 ) page: pp.1657-1665   1995.12

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  342. Performance Analysis of CDMA ALOHA Reviewed

    "T. Yamazato, T. Sato, H. Okada, K. Nishida, M. Katayama and A. Ogawa"

    1995 International Symposium on Communications     page: pp.434-441   1995.12

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  343. A Study on Non-Coherent Reception of M-ary Spread-Spectrum Signals in the Presence of Carrier Frequency Offset Reviewed

    "T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    4th IEEE International Conference on Universal Personal Communications   Vol. B5.5   page: pp.412-416   1995.11

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  344. Throughput Analysis of DS/SSMA Unslotted Aloha with Channel Load Sensing Reviewed

    "T. Sato, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference     page: pp.1492-1496   1995.11

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  345. Performance Analysis of DS/SSMA with Error Correcting Code in Rayleigh Fading Channel Reviewed

    "T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Global Telecommunications Conference     page: pp.1121-1125   1995.11

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  346. Throughput and Delay analysis of DS/SSMA unslotted Aloha by non-perfect capture Reviewed

    "T. Yamazato, T. Sato, H. Okada, M. Katayama and A. Ogawa"

    4th IEEE International Conference on Universal Personal Communications   Vol. C8.3   page: pp.738-742   1995.11

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  347. A New Block Demodulator for DS/SS Signal with Carrier Frequency Offset Reviewed

    "S. Okuda, M. Katayama, T. Yamazato and A. Ogawa"

    2nd Asia-Pacific Conference on Communications     page: pp.203-207   1995.9

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  348. Performance of Bit-Interleaved Trellis Coded 16-QAM with Maximized Code Diversity Reviewed

    "A. Aoyama, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E78-A ( no.9 ) page: pp.1215-1219   1995.9

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  349. Non-coherent Reception of M-ary Spread-Spectrum Signals in the presence of Carrier Frequency Offset Reviewed

    "T. Wada, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.E78-A ( no.9 ) page: pp.1102-1108   1995.9

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  350. Coordinate-by-coordinate Interleaved Trellis Coded QPSK with T-algorithm on Rayleigh Fading Channels Reviewed

    "H. Nakamura, T. Yamazato, M. Katayama and A. Ogawa"

    "60th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications"     page: pp.497-501   1995.9

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  351. A Preliminary Study of a Multimedia SSMA System Considering the Interactions between the Signals Reviewed

    "M. Ichiba, M. Katayama, T. Yamazato and A. Ogawa"

    11th International Zurich Symposium & Technical Exhibition on Electromagnetic Compatibility     page: pp.31-35   1995.9

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  352. Bit-by-bit Interleaved Trellis Coded MPSK with Differential Detection on Rayleigh Fading Channels Reviewed

    "H. Nakagawa, T. Yamazato, M. Katayama and A. Ogawa"

    45th IEEE Vehicular Technology Conference     page: pp.659-663   1995.7

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    Language:English  

  353. On Remedying the Traffic Nonuniformity Effects in LEO Satellite Communication Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    45th IEEE Vehicular Technology Conference     page: pp.986-990   1995.7

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    Language:English  

  354. Transmit Permission Control Scheme for Spread-Slotted ALOHA in LEO Satellite Communication Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    2nd Asia-Pacific Conference on Communications   Vol. 7E.4   page: pp.848-852   1995.6

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    Language:English  

  355. Performance Analysis of QAM Systems Under Class A Impulsive Noise Environment Reviewed

    "S. Miyamoto, M. Katayama, N. Morinaga"

    IEEE Transaction EMC   Vol. vol.37 ( no.2 ) page: pp.260-267   1995.5

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  356. A Differential Positioning Scheme witn a Single Satellite to be incorporated into Mobile Communications Reviewed

    "Y. Yabumoto, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.78-BII ( no.5 ) page: pp.297-305   1995.5

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  357. Design of TCM Signals for Class-A Impulsive Noise Environment Reviewed

    "S. Miyamoto, M. Katayama and N. Morinaga"

    11th International Zurich Symposium & Technical Exhibition on Electromagnetic Compatibility   Vol. 27F2   page: pp.143-148   1995.3

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  358. Design of TCM Signals for Class-A Impulsive Radio Noise Environment Reviewed

    "S. Miyamoto, M. Katayama, N. Morinaga"

    IEICE Transaction on Communications   Vol. vol.E78-B ( no.2 ) page: pp.253-259   1995.2

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  359. Performance of an Integrated Voice/Data System in Nonuniform Traffic Low Earth-Orbit Satellite Communication Systems Reviewed

    "A. Jamalipou, T. Yamazato, M. Katayama and A.Ogawa"

    IEEE Journal on Selected Areas in Communications   Vol. vol.13 ( no.2 ) page: pp.465-473   1995.2

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  360. A New Access Protocol for Asynchronous Packet CDMA Systems Reviewed

    "A. Ogawa, T. Yamazato, M. Katayama and K. Toshimitsu"

    International Symposium on Information Theory and Its Applications     page: pp.917-920   1994.11

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  361. Simultaneous Transmission of Spread-Spectrum Signals of Different Process Gains Reviewed

    "M. Katayama, A. Kakami, T. Yamazato and A. Ogawa"

    International Conference on Communication Systems     page: pp.607-611   1994.11

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  362. Signal-to-Interference Ratio of CDMA in Low Earth-Orbital Satellite Communication Systems with Non-uniform Traffic Distribution Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    IEEE Global Telecommunications Conference     page: pp.1748-1752   1994.11

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    Language:English  

  363. Performance of 16-QAM with Increased Diversity on Rayleigh Fading Channels Reviewed

    "A. Aoyama, T. Yamazato, M. Katayama and A. Ogawa"

    International Symposium on Information Theory and Its Applications     page: pp.1133-1137   1994.11

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  364. Near-Far Problem of Hybrid DS/SFH-SSMA with Multi-Level Power Control Reviewed

    "T. Yamazato, Y. Shinkaji, M. Katayama and A. Ogawa"

    International Symposium on Information Theory and Its Applications     page: pp.109-113   1994.11

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    Language:English  

  365. Effect of Nonlinear Amplification on a Spread Spectrum Signal and Receiver Configurations Reviewed

    "M. Sawada, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Fundamentals   Vol. vol.77-A ( no.11 ) page: pp.1855-1862   1994.11

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    Language:English   Publishing type:Research paper (scientific journal)  

  366. A New Code Acquisition Scheme Using Divided Matched Filters for a DS/SS Signal with Frequency Offset Reviewed

    "M. Mizutani, M. Katayama, T. Yamazato and A. Ogawa"

    International Conference on Communication Systems     page: pp.379-383   1994.11

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    Language:English  

  367. Spread-Slotted ALOHA Throughput in Nonuniform Traffic Situation for LEO Satellite Communication Systems Reviewed

    "A. Jamalipour, M. Katayama, T. Yamazato and A. Ogawa"

    International Conference on Communication Systems     page: pp.554-558   1994.11

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  368. Performance of DS/FH-CDMA Over Fading Channels with Near-Far Problem Reviewed

    "Y. Shinkaji, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.77-BII ( no.11 ) page: pp.681-690   1994.11

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  369. Near-Far Problem on Hybrid Direct-Sequence/Slow-Frequency-Hopping Spread-Spectrum Multiple-Access Reviewed

    "T. Yamazato, M. Katayama and A. Ogawa"

    Proc. of International Symposium on Personal Indoor and Mobile Radio Communications   Vol. C3.2   page: pp.319-323   1994.9

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  370. Differential Positioning with a Single Satellite Reviewed

    "Y. Yabumoto, M. Katayama, T. Yamazato and A. Ogawa"

    International Conference on Vehicle Navigation & Information Systems   Vol. D2-3   page: pp.579-584   1994.8

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  371. A Study on Quasi-Synchronous CDMA Based on Selected PN Signature Sequences Reviewed

    "S. Kuno, T. Yamazato, M. Katayama and A. Ogawa"

    Proc. of the IEEE Third International Symposium on Spread Spectrum Techniques & Applications     page: pp.479-483   1994.7

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  372. Performance of CDMA with DS/SS/GMSK Reviewed

    "A. Ogawa, M. Katayama, T. Yamazato and T. Maebara"

    Proc. of the IEEE Third International Symposium on Spread Spectrum Techniques & Applications     page: pp.564-568   1994.7

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  373. A Design of BPSK Receiver Using the Dependence Between Quadrature Components of Class-A Impulsive Noise Reviewed

    "S. Miyamoto, M. Katayama and N. Morinaga"

    Proc. of 1994 International Symposium on Electromagnetic Compatibility   Vol. 19A302   page: pp.513-516   1994.6

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  374. A Novel Spread Slotted Aloha System with Channel Load Sensing Protocol Reviewed

    "K. Toshimitsu, T. Yamazato, M. Katayama and A. Ogawa"

    IEEE Journal on Selected Areas in Communications   Vol. vol.12 ( no.4 ) page: pp.665-672   1994.5

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  375. Receiver Design Using the Dependence between Quadrature Components of Impulsive Radio Noise Reviewed

    "S. Miyamoto, M. Katayama and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.J77-B-II ( no.2 ) page: pp.63-73   1994.2

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  376. Configuration of the Receiver for Nonlinearly Amplified Spread Spectrum Signals in CDMA Systems Reviewed

    "M. Sawada, M. Katayama, T. Yamazato and A. Ogawa"

    Proc. of 1993 International Symposium on Nonlinear Theory and its Application   Vol. 7.5-5   page: pp.875-878   1993.12

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  377. Carrier Regenaration in a Block Demodulator for Low Earth-Orbital Satellite Communication Systems Reviewed

    "Y. Uno, M. Katayama, T. Yamazato and A. Ogawa"

    Proc. of the Fourth International Symposium on Personal Indoor and Mobile Radio Communications   Vol. C3.6   page: pp.458-462   1993.9

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  378. Block Demodulation for Low Earth-Orbital Satellite Communication Systems Reviewed

    "M. Katayama, Y. Uno, T. Yamazato and A. Ogawa"

    Proc. of the XXIVth General Assembly of the International Union of Radio Science   Vol. C9-3   page: pp.124   1993.8

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  379. Performance of Asynchronous Band-Limited DS/SSMA Systems Reviewed

    "T. Shibata, M. Katayama and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E76-B ( no.8 ) page: pp.921-928   1993.8

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  380. Performance Analysis of QAM Systems Under Class A Impulsive Noise Environment Reviewed

    "S. Miyamoto, M. Katayama and N. Morinaga"

    Proc. of the XXIVth General Assembly of the International Union of Radio Science   Vol. CE-3   page: pp.575   1993.8

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    Language:English  

  381. Effect of Nonlinear Amplifiers of Transmitters in the CDMA Systems Using Offset-QPSK Reviewed

    "M. Sawada, T. Yamazato, M. Katayama and A. Ogawa"

    IEICE Transaction on Communications   Vol. vol.E76-B ( no.7 ) page: pp.741-744   1993.7

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  382. Reduced Path Viterbi Decoder with Inverse Circuit of Encoder Reviewed

    "T. Yamazato, I. Sasase, S. Mori, M. Katayama and A. Ogawa"

    Proc. of the IEEE Pacific Rim Conference on Communication and Signal Processing     page: pp.569-572   1993.5

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    Language:English  

  383. Satellite Communications Systems with Low-Earth Orbits and the Effects of Doppler Shift Reviewed

    "M. Katayama, A. Ogawa, N. Morinaga"

    IEICE Transaction on Communications   Vol. vol.J76-BII ( no.5 ) page: pp.382-390   1993.5

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  384. Carrier Synchronization under Doppler Shift of the Non-Geostationary Satellite Communication Systems Reviewed

    "M. Katayama, A. Ogawa and N. Morinaga"

    Proc. of the IEEE International Conference on Communication Systems     page: pp.466-470   1992.11

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  385. Signal Detection Characteristics in Trellis Coded Modulation System under Impulsive Noise Environment and Its Optimum Reception Reviewed

    "S. Miyamoto, M. Katayama and N. Morinaga"

    IEICE Transaction on Communications   Vol. vol.J75-B-II ( no.10 ) page: pp.671-681   1992.10

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  386. A Study of the Communication Systems Using the LOW-ALTITUDE Nongeostationary Satellites Reviewed

    M. Katayama and N. Morinaga

    Proc. of the IEEE International Conference on System Engineering     page: pp.452-456   1992.9

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    Authorship:Lead author   Language:English  

  387. Optimum Detection and Design of TCM Signals Under Impulsive Noise Environment Reviewed

    "S. Miyamoto, M. Katayama and N. Morinaga"

    Proc. of the IEEE International Conference on System Engineering     page: pp.473-478   1992.9

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Books 6

  1. 無線通信工学

    片山正昭[編著],上原秀幸,岩波保則,和田忠浩,山里敬也,小林秀雄,岡田啓( Role: Joint author)

    オーム社  2009.11 

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    Language:Japanese

  2. * 電力線通信システム

    片山正昭[監修](片山正昭, 都築伸二, 山里敬也, 他著)( Role: Joint author)

    トリケップス  2002.7 

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    Language:Japanese

    電力線通信に関して,基礎技術,研究動向,法制度,社会経済,製品までを詳細に記載した専門書.B5版188頁

  3. CDMA方式と次世代移動体通信システム

    小川明, 片山正昭, 山里敬也, 水野俊夫( Role: Sole author)

    トリケップス  1995 

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    Language:Japanese

  4. エコトピア科学概論

    田原譲(編著),片山正昭,他( Role: Joint author)

    コロナ社  2012.12  ( ISBN:974-4-339-06881-8

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    Language:Japanese

  5. Power Line Communications

    M. Katayama, P. Amirshahi, F. Canete, K. Dostert, S. Galli, M. Kavehrad( Role: Joint author)

    John wiley & Sons Ltd.  2010.6 

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    Language:English

  6. 改訂 電子情報通信用語辞典(衛星通信部門代表,他部門分担執筆)

    片山正昭(衛星通信部門代表, 他分野分担執筆) 電子情報通信学会(編)( Role: Sole author)

    コロナ社  1999 

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    Language:English

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MISC 1

  1. Let's go to IEICE Workshops!:Reliable Communication and Control (RCC)

    KATAYAMA Masaaki

    IEICE ESS Fundamentals Review   Vol. 8 ( 2 ) page: 127b - 127b   2014

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

    DOI: 10.1587/essfr.8.127b

    CiNii Article

Presentations 200

  1. 光無線MIMOのためのサイクリックプレフィクスを用いた空間周波数領域信号検出法,

    中井彩乃,林和則,中村哲也,ベンナイラシャドリア,片山正昭

    第65回システム制御情報学会研究発表講演会  2021.5.26 

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    Event date: 2021.5 - 2121.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  2. ドローンを用いた無線リレーネットワークにおける不均一なユーザ分布を考慮した飛行方式,

    浅野博之,岡田啓,ベンナイラシャドリア,片山正昭

    電子情報通信学会技術研究報告  2021.5.28 

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    Event date: 2021.5

    Language:Japanese   Presentation type:Oral presentation (general)  

  3. Experimental Evaluation of a Wireless LAN Relay System Using Unmanned Aerial Vehicles Authority International conference

    H. Tanaka, N. Matsui, Y. Watanabe, H. Okada, M. Katayama

    IEEE Vehicular Technology Conference (VTC)  2021.4  IEEE

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    Event date: 2021.4

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Helsinki   Country:Finland  

  4. 同報通信を用いたIEEE802.15.4複数機器無線制御の最適化に関する一検討,

    梅村康寛,小林健太郎,岡田啓,片山正昭

    電子情報通信学会総合大会  2021.3.10 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  5. 長距離高速8×8光無線MIMO通信システムの実験的評価

    中村哲也, ベンナイラシャドリア, 小林健太郎, 岡田啓, 片山正昭

    電子情報通信学会総合大会  2021.3.12 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  6. 確認応答のあるセンサネットワークにおけるバリュープット向上手法の検討

    棚橋亮太, ベンナイラシャドリア, 岡田啓, 片山正昭

    電子情報通信学会総合大会  2021.3.12 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  7. Indoor Long Distance High Speed Imaging MIMO System with Linear Transmitting Element Array

    2021.3.5 

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    Event date: 2021.3

    Language:English   Presentation type:Oral presentation (general)  

  8. Performance Evaluation of a Machine Learning-Based Rate Selection Scheme for Wireless LAN in the Presence of Contention and Hidden Nodes

    Authors S. Watanabe, H. Okada, C. Ben Naila, M. Katayama

    rity IEICE Technical Report, RCS2020-203, pp.1-6  2021.3.3 

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    Event date: 2021.3 - 2121.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  9. Experimental Evaluation of an Indoor Long Distance High Speed Imaging MIMO System International conference

    A. Iwasa, C. Ben Naila, K. Kobayashi, H. Okada, M. Katayama

    IEEE Global Communications Conference (GLOBECOM)  2020.12  IEEE

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    Event date: 2020.12

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Taipei   Country:Taiwan, Province of China  

    DOI: 10.1109/GLOBECOM42002.2020.9322574

  10. A Study on Visible Light Communications Using a High-Speed Display and a Rolling-Shutter Camera International conference

    T. Hayashi, H. Okada, K. Kobayashi, T. Wada, M. Katayama

    International Symposium on Nonlinear Theory and its Application (NOLTA)  2020.11  NOLTA2020 HOME Symposium Information Author Information Organizer Research Society of Nonlinear Theory and Its Applications, IEICE,

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Virtual (Okinawa)   Country:Japan  

  11. 広域災害被災地におけるドローンを用いた無線リレーネットワーク 〜 ボロノイ分割を利用した飛行モデルの一検討 〜,

    浅野博之,岡田啓,ベンナイラシャドリア,片山正昭

    電子情報通信学会技術研究報告  2020.11.26 

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

  12. 無線分散ネットワークにおける機械学習を用いた送信レート選択手法,

    渡邊壮輝,岡田啓,ベンナイラシャドリア,片山正昭

    電子情報通信学会技術研究報告  2020.10.22 

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    Event date: 2020.10

    Language:Japanese   Presentation type:Oral presentation (general)  

  13. ドローンを用いたリレーネットワークにおける被覆制御に注目した飛行モデルの一検討,

    浅野博之,岡田啓,ベンナイラシャドリア,片山正昭

    電子情報通信学会通信ソサイエティ大会  2020.9.1 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  14. マルチコプタを用いた無線LAN中継システムの実証試験 〜 基礎評価 〜,

    渡辺悠太,岡田啓,田中弘生,松井伸夫,片山正昭

    電子情報通信学会技術研究報告  2020.8.4 

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    Event date: 2020.8

    Language:Japanese   Presentation type:Oral presentation (general)  

  15. 光無線MIMOシステムの通信性能に及ぼす光素子配置の影響,

    中村哲也,ベンナイラシャドリア,小林健太郎,岡田啓,片山正昭

    電子情報通信学会技術研究報告  2020.7.21 

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    Event date: 2020.7

    Language:Japanese   Presentation type:Oral presentation (general)  

  16. 高速表示ディスプレイとCMOSイメージセンサを用いた可視光通信~送信データの高速表示に対応した送受信方式の一検討~

    林大雅, 岡田啓, 小林健太郎, 和田忠浩, 片山正昭

    電子情報通信学会技術研究報告  2020.6.24 

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    Event date: 2020.6

    Language:Japanese   Presentation type:Oral presentation (general)  

  17. 大規模災害被災地におけるドローンを用いた臨時通信システム 〜 ドローンの位置分布推定を用いた飛行モデルの一検討 〜,

    矢内宏樹,岡田啓,小林健太郎,片山正昭

    電子情報通信学会技術研究報告  2020.3.3 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  18. 屋内長距離高速イメージングMIMOシステムの実験的性能評価,

    岩佐章史,小林健太郎,岡田啓,片山正昭

    電子情報通信学会技術研究報告  2020.3.11 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  19. 線形アレイを用いた光無線MIMOシステムの通信距離特性に関する実験的評価,

    中村哲也,小林健太郎,岡田啓,片山正昭

    電子情報通信学会総合大会  2020.3.18 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  20. 電力線通信を用いた複数機器遠隔制御における制御周期と制御品質の関係,

    長谷川充,小林健太郎,岡田啓,片山正昭

    電子情報通信学会技術研究報告  2020.1.27 

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    Event date: 2020.1

    Language:Japanese   Presentation type:Oral presentation (general)  

  21. Evaluation of 920 MHz Radio Wave Propagation Characteristics for Wireless Sensor Networks in a Farm

    Moribe Tomoya, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    Agricultural Information Research 

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    Event date: 2017

    Language:Japanese   Presentation type:Oral presentation (general)  

    <p>To implement reliable wireless sensor networks suitable for use in "smart agriculture", it is important to understand the radio propagation characteristics in the farm environment. In a farm field, crops and structures such as glasshouses or vinyl houses that lie between transmitter and receiver nodes affect radio wave propagation. Owing to multipath effects that arise from reflections of radio waves from crops, the ground, and other obstacles, slight differences among the node positions can affect the received signal strength indicator (RSSI). In addition, crops that are shaken by the wind introduce temporal variation into RSSI. In this paper, we measured RSSI based on radio propagation characteristics in the 920 MHz band, which is used in the Wi-SUN standard for smart agriculture, in a farm field, inside a vinyl house, and between the base station and farm fields, and evaluated signal attenuation as a function of distance and the variability of RSSI by analyzing signal data. We measured the decay characteristics of the signal in a farm where crops and other obstacles exist along the radio wave's propagation path. In addition, we characterized the variation of RSSI in a farm, where obstacles exist near the transmitter or receiver nodes and crops exist along the radio wave's propagation path.</p>

    DOI: 10.3173/air.26.1

    CiNii Article

  22. A-17-6 A Multiple Machine Control System Using Power Line Communication with Equal Control Quality

    Sawada Shun, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  23. A-17-1 A study on channel error correction scheme for minimizing state estimation error in wireless feedback control systems

    Miwa Yosuke, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  24. A-17-2 A study on H-infinity control with control information packet loss considered as disturbances

    Ogura Takashi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  25. A-17-5 A study on selection of multiple access schemes for IEEE 802.15.4 in wireless control of multiple plants

    Uematsu Yushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  26. A-9-18 Dynamic Control of Hard Limiter Threshold for Asynchronous Wireless Optical CDMA System with Near-far Problem International conference

    Yamamoto Yusuke, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE Engineering Sciences Society/NOLTA Society Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  27. B-18-25 Evaluation of radio propagation of 920 MHz frequency band in a farm field and a vinyl house

    Moribe Tomoya, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  28. BS-3-26 Interference suppressing performance of a sub-band selection based MIR UWB system(BS-3. Advanced Networking Technologies for Innovative Information Networks)

    Qi Lin, Katayama Masaaki

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  29. A-22-1 Evaluation of control quality of wireless feedback control systems with Huffman coding

    Nagata Atsushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  30. A-22-2 Evaluation of Predictive Control Quality Caused by Packet Losses in Systems Having Limit Cycle

    Nakajima Akinori, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  31. B-18-22 Sparseness Evaluation of Link Quality in an Indoor Wireless Mesh Network

    KATO Tatsuya, SUZAKI Shuhei, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  32. B-5-157 Decision-Feedback Channel Tracking Scheme based on Successive Combining for MIMO-OFDM WLANs

    Asai Yusuke, Mashino Jun, Sugiyama Takatoshi, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  33. Performance Evaluation of Source Node Grouping for a Distributed Sensor Network

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    In a conventional sensor network, a management node such as a sink node collects sensing information, and carries out applications by processing the information. However, if some applications are carried out in the target environment, the management node does not have to collect information, but each actuator node distributedly collects and processes the information to carry out the application. Furthermore, it is only necessary to collect data of sensor nodes that are concerned with the application, and we have these nodes be grouped together. We propose a protocol to collect the sensing information of grouped source nodes efficiently, and demonstrate in the experiment that actuator nodes are able to collect the information and the proposed protocol can decrease the amount of transmitting information.

    CiNii Article

  34. Performance evaluation of H-infinity control for wireless control systems with packet loss

    OGURA Takashi, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. RCC, Reliable communication and control 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Packet loss in wireless communication channels is one of the major weakness in wireless control systems. H_∞ control designs the controller to reduce the influence of disturbances, so that a communication technique based on H_∞ control is expected to improve a wireless control system performance. In order to propose such a communication technique, we need to know performance characteristics of H_∞ control. In this paper, for evaluating performance of H_∞ control for wireless control systems with packet loss, we compare the influence of packet losses in a H_∞ control system with considering packet loss at controller design, in a H_∞ control system without consid- ering and in a LQ(Linear Quadratic) control system. Numerical examples clarify that the H_∞ control system with considering packet loss improve stability performance and decrease tracking performance. Further, packet loss of control information in the H_∞ control system is more important factor on the performances than that in the LQ control system.

    CiNii Article

  35. Optical Camera Communications Using Digital Signage

    OKADA Hiraku, SATO Sho, WADA Tadahiro, YAMAZATO Takaya, KATAYAMA Masaaki

    ITE Technical Report 

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    Event date: 2015

    Language:Japanese   Presentation type:Oral presentation (general)  

    In this paper, we discuss optical cammera communication systems using digital signage, which is composed of a liquid crystal display (LCD). The digital signage, which is used as a transmitter, displays advertisement contents as visual information. The optical camera communication system using digital signage has to transmit data information not to obstruct the visual information. In this paper, we propose blue color difference modulation for the optical camera communication system using digital signage. We clarify the performance of the proposed system by data transmission experiments.

    DOI: 10.11485/itetr.39.38.0_21

    CiNii Article

  36. Performance Improvement by Equalization of a Multi-level Spatially Coded Amplitude Shift Keying Signal in a Visible-Light Communication System with an LED-backlighted Signboard

    JINNO Yuto, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    This manuscript investigates a modulation/demodulation schemes for a Visible-Light Communication system that transmits information to handheld terminals carried by pedestrians through the use of LED backlighted signboards installed in public spaces. The focus is on the incensement of data rate of the system. For this purpose, the authors have proposed multi-level spatially coded Amplitude Shift Keying(ASK) scheme. The previous study of the authors, however, shows that the multi-level ASK has worse bit error rate performance than that of simple On-Off Keying(OOK). The possible reason of this is the non-flat frequency response of electric-optical-electric channel. Thus, this study introduces equalization of the channel for performance improvement. The results of experiment show error-free transmission by the multi-level ASK at 8Mbps transmission rate and 13Mbps with a bit error rate of 10^<-3>. It is also confirmed that the multi-level ASK achieves the better performance than OOK at the speeds higher than 13Mbps with equalization.

    CiNii Article

  37. Impact of Signal Intensity Differences on the BER Performance of Asynchronous Wireless Optical CDMA Systems

    YAMAMOTO Yusuke, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    For asynchronous multiple access in optical wireless systems, we introduce optical CDMA technology. In wireless communication, because of different propagation characteristics of each user, the intensity of optical signal may not be the same. This paper discusses the impact of this signal intensity difference on the BER performance of an optical CDMA system. The system uses binary pulse position modulation (2 PPM) as modulation scheme and prime codes for signature sequences. The bit error rate of the system is analyzed considering multiple access interference (MAI). As the results, there exist the near-far problem also in wireless optical CDMA systems, but an influence of the strength and numbers of interference signals is not same to that of a CDMA system using radio waves.

    CiNii Article

  38. Performance Comparison of Compressed Transmission Method and Information Sharing Method Using Compressed Sensing

    SUZAKI Shuhei, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    In wireless distributed networks, each node establishes its route autonomously. The optimum route should be selected according to the change of radio propagation environment. Link-state routing is a technique that gathers link information and selects the optimum route based on that information. Flooding is an information sharing method, but it causes a broadcast storm problem. To reduce the amount of transmitted information and its traffic, we proposed an information sharing method using compressed sensing for link quality in wireless distributed networks. In this study, we apply a compressed transmission method, which samples components of non-zero without compressed sensing, and compare it with the conventional method using compressed sensing.

    CiNii Article

  39. Measurement of Channel Characteristics and Communication Quality of Narrowband Power Line Communication in a Large Scale Building

    ENDO Kenji, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. WBS, Wideband System 

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    Event date: 2014.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    This manuscript denotes the results of narrowband power line communication experiments aiming a data gathering system in a large scale building. The experiments were performed in a building grid to evaluate the packet error rate of some channels. The experiments were performed using G3-PLC standard at Association of Radio Industries and Businesses (ARIB) band. In addition, measuring the propagation loss and noise of the channels which were used on the experiments, we discussed the relationship between the communication quality and channel characteristics. The results of experiments show the communication quality between different branch breakers is poor because of the propagation loss. Especially, the communication quality between floors which have each main breaker degrades worse. Further, in some path, the communication direction affects the communication quality because the noise environments at the receiver are different.

    CiNii Article

  40. Evaluation of Control Quality Caused by Modelling Errors of Rotary Inverted Pendulum in Wireless Feedback Control Systems

    NAKAJIMA Akinori, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. RCC, Reliable communication and control 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    In wireless control systems, communication errors in the wireless channel have an adverse effect on control quality. In the application of wireless control to industrial machines, an essential issue is to diminish the deterioration of control quality. Regarding this issue, several algorithms have already been proposed. However, in most of these algorithms, the performance improvements are based on systems using simple linearized plant models. In our research we use a real rotary inverted pendulum as a plant, and evaluate modeling errors in wireless communication systems due to modeling quality. When constructing plant model, we consider the nonlinearity of input voltages, the initial position error, the quantization error of the encoder, among other factors. We evaluate modelling error using two model. One is the conventional liner model. The other is the constructed plant model. As a result, we could see that the constructed model had better control quality than the conventional liner model.

    CiNii Article

  41. A Study on Node Combination of Emergency Wireless Networks for a Large-scale Disaster

    MORI Atsushi, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki, MASE Kenichi

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    It is very important to ensure communication systems for a large-scale disaster. As an emergency communication system, a wireless network using balloons, electric vehicles (EVs), and unmanned aerial vehicles (UAVs) of electric multicopter equipped with wireless communication equippment was proposed. In this paper, we suppose the wireless network combining these nodes. We discuss how this network constitutes and what the specific issue is. The communication area is evaluated by changing the node height. In this network, the height of balloon and UAV nodes changes and then the communication area changes with the height. In addition, because of this there is a problem that the network is temporarily disconnected . To solve this problem, we employ a delay-tolerant network (DTN) technique. This paper evaluates the number of nodes and node density according to the desired application for a disaster and the regional property.

    CiNii Article

  42. Requested Talk : How to realize reliable control using unreliable communication (Smart Radio)

    Katayama Masaaki

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    Event date: 2014.10

    Language:English   Presentation type:Oral presentation (general)  

    CiNii Article

  43. Construction of a Distributed Sensor Network for Source Node Grouping(Poster Presentation)

    ISHIKAWA Yosuke, OKADA Hiraku, NAITO Katsuhiro, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2014.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    In a conventional sensor network, a management node such as a sink node collects sensing information, and carries out applications implemented according to the information. However, if some applications are carried out in the target environment, the management node does not have to collect information, but each actuator node autonomously collects and processes the information to carry out the application. Furthermore, it is only necessary to collect data of sensor nodes that are concerned with the application, and we have these nodes be grouped together. In this case, we propose a protocol to collect the sensing data efficiently, and demonstrate in the experiment that actuator node is able to collect the information and amount of information in the network is decreased.

    CiNii Article

  44. Multi-level Amplitude Sift Keying using Spatial Combining for the Visible-Light Communication System with an LED-backlighted Signboard

    JINNO Yuto, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2014.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    This manuscript proposes a new Visible-Light Communication (VLC) system that transmits information to handheld terminals carried by pedestrians through the use of LED backlighted signboards located in public spaces. To improve previous systems proposed by us, we introduce the use of multilevel modulation. Specifically, in order to avoid the effect of nonlinearity of LEDs, we apply binary baseband modulation to LED by FET switching. We propose a scheme that realizes multilevel amplitude modulation by spatially combining the binary light signals. In order to evaluate the performance, multiple LED lights and a diffuser board are employed to set the experimental environment. In the experiment, we found out that the duty cycle of the ON/OFF switching of the LEDs affects the output voltage of the photoelectric converter. Thus, we apply a scheme that makes those duty cycles become uniform. Consequently, 4-level amplitude modulation is achieved, and our experimental result shows that a t a transmission rate of 5Mbps the bit error rate becomes lower than 10^<-3>.

    CiNii Article

  45. A Study of Time Division Multiple Access Schemes for the Control of Machines using Narrowband Power Line Communication (高信頼制御通信)

    カリソ セサル, 小林 健太郎, 岡田 啓, 片山 正昭

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 

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    Event date: 2014.7

    Language:English   Presentation type:Oral presentation (general)  

    This report discusses multiple access schemes for feedback control of multiple machines that use a power line as their feedback loops. The conventional fixed time slot assignment scheme is compared with a proposed cyclic time slot assignment scheme that considers the cyclic features of the power line communication (PLC) channel. The control quality of the systems with these two schemes is evaluated by stability and accuracy of the system behavior. As a result, it is confirmed that the cyclic time slot assignment scheme offers a much more fair medium access to all machines.

    CiNii Article

  46. Poster Presentation : A Study on State Monitoring Using Self-Organizing Map for MIMO Mesh Networks

    MINEMATSU Yoshihiro, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2014.5

    Language:Japanese   Presentation type:Poster presentation  

    We focus on MEMO mesh networks, which consist of wireless nodes supporting MIMO transmission. In MIMO mesh networks, tiny channel variation influence a link quality, and it results in the fluctuation of network performances such as throughput. For stable operation of a MIMO mesh network, it is important to monitor its characteristics. For monitoring the network, it is important to know relationship among wireless links. In this study, we measure the link quality in our testbed, and use SOM (Self-Organizing Map) to find the characteristics among wireless links. As a result, we clarify the possibility to find the relationship among links for each characteristic.

    CiNii Article

  47. Keynote Address : An Invitation to Reliable Communication and Control : Its Important and Interesting Features Invited

    KATAYAMA Masaaki

    IEICE technical report. MICT, Healthcare and medical information communication technology 

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    Event date: 2014.5

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Control communications have a wide variety of applications including medical and healthcare systems, financial systems, disaster protection/recovery, building management, manufacturing systems, and robots/humanoid, and a key technology for large scale systems and systems of systems such as intelligent transportation systems and smart grid/community systems. This keynote address illustrates important and interesting features of the control communications, mainly from an academic viewpoint. At first, it is explained that a control system has to be regarded as a probabilistic system when imperfectness of control communications is considered. Then differences of the requirements for conventional and control communications is clarified. It is noteworthy that the performance of communication layer can/should be evaluated by using the quality of its upper layer, i.e., control layer, and cross-layer optimization of control and communication layers is possible. In addition, new measures/viewpoints of communication qualities are introduced. Information theory of freshness of information, necessity of communication protocols for control, and simultaneous control of multiple objects are briery outlined as examples of interesting topics on control communications.

    CiNii Article

  48. Limitting the Sensing Frequency to Improve the Data Collection Rate in Low Power Generation for Solar-powered Wireless Sensor Networks

    Naoya Ishitani, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama

    IPSJ SIG technical reports 

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    Event date: 2014.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Our goal is improvement of the data collection rate in solar-powered wireless sensor networks(WSNs). One of the methods to improve the data collection rate is a cooperative transmission by which a node relays data from a source node. However, the cooperative node is not sufficient to prevent the data collection rate from decline in low power generation, such as in cloudy and at night. We tackled this problem by introducing nodes that only relay data without sensing data. As a result, we clarified that our proposal improved the data collection rate in the low power generation. On the other hand, it suppressed the improvement of the data colletion rate because nodes that do not sense data are fixed in place. Therefore, we propose the method in which sensing frequency is limitted for some nodes that do not have sufficient battery level. Then we compare the performance of our proposal with the one that fixed nodes do not sense data and the one that randomly selected nodes are limited in sensing frequency.

    CiNii Article

  49. Invited Talk : Information Sharing of Link Quality by Compressed Sensing and Compressed Transmission for Wireless Distributed Networks

    OKADA Hiraku, SUZAKI Shuhei, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2014.4

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    In wireless distributed networks, each node constructs routes to desired nodes in an autonomously distributed manner. A link-state routing protocol is one of routing protocols, and it selects the best route by sharing link quality information in the whole network. Because the transmissions of link quality information are regarded as overhead, it is preferred that such transmissions are reduced. In this report, we introduce information sharing methods of link quality by compressed sensing and compressed transmission.

    CiNii Article

  50. B-18-52 Evaluation of Communication Area for an Emergency Communication System Using Electric Helicopter

    MORI Atsushi, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki, MASE Kenichi

    Proceedings of the IEICE General Conference 

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    Event date: 2014.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  51. Improvement of Decoding Performance for Network and Multi-route Coding in Wireless Mesh Networks

    SUGAO Yuki, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2014.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    In wireless mesh networks, flooding causes a broadcast storm problem. Random network coding can mitigate the effect of the broadcast storm problem in wireless mesh networks. However, it cannot correct bit errors, and it should forward more and more packets to recover bit errors. On the other hand, multi-route coding was proposed to reduce bit errors on wireless channels in wireless mesh networks. This coding scheme can obtain a coding and diversity gain by transmitting multiple coded packets on multiple routes. This paper proposes a decoding scheme for network and multi-route coding to improve the packet error rate. In this scheme, a receiving node calculates likelihood of information sequence based on route characteristic, and uses this likelihood as the input of decoder for multi-route coding. As a result of simulation, the proposed decoding scheme can improve the packet error rate.

    CiNii Article

  52. A Compressed Transmission Method for Information Gathering of Link Quality in Wireless Distributed Networks

    SUZAKI Shuhei, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Proceedings of the Society Conference of IEICE 

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    Event date: 2013.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  53. Poster Presentation : Performance Analysis of Area Transmission Efficiency between Single-User MIMO and Multi-User MIMO in Wireless Mesh Networks : Uniform Location of Nodes

    KUSUMOTO Hironori, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Technical report of IEICE. RCS 

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    Event date: 2013.7

    Language:Japanese   Presentation type:Poster presentation  

    It is expected that application of MU-MIMO (Multi-User Multiple-Input Multiple-Output) will improve performance of wireless mesh networks. SU-MIMO (Single-User MIMO) cannot always achieve capacity enhancement by the spatial multiplexing. By contrast, MU-MIMO always achieves it because of the possibility of multiplexing packets regardless of the receiving node of them. In the past studies, we focus the area transmission efficiency that indicates the number of successfully transmitting packets per an area and per a time in the grid topology network. In this paper, we extend the analysis of the area transmission efficiency in the network where nodes are uniformly located. From a result, the area transmission efficiency of SU-MIMO can be superior to that of MU-MIMO when the number of waiting packets is large. Because MU-MIMO needs more area than SU-MIMO to avoid packet collisions. In addition, if the number of neighbor nodes is large, performance of SU-MIMO is degraded because of the decrease of the multiplexing efficiency. On the other hand, that of MU-MIMO is hardly degraded.

    CiNii Article

  54. High-Speed Transmission by Frequency Domain Equalization and Noise Reduction in the Visible-Light Communication System with an LED Sign Panel

    JINNO Yuto, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. WBS, Wideband System 

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    Event date: 2013.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    In this manuscript, we discuss a Visible-Light Communication (VLC) system that add the function to transmit information wirelessly to other devices to an LED-backlighted sign panel used in public space. We intend to increase data rate of the system by modifying the system that authors previously have devised. In terms of high-speed VLC using panel, the band limiting of electrical/optical conversion and the ambient light noise were considered as a problem. After optical/electrical conversion at receiver, ambient light become narrowband noise. Using this character, we adopt the method of noise elimination in frequency domain. Moreover, in order to improve the band limiting, we apply the way of the channel equalization in frequency domain after noise elimination. Our experiment results show that there is no transmission error rate under 2Mbps transmission speed and 10^<-4> error rate under 4Mbps transmission speed without error-correcting code.

    CiNii Article

  55. Improvement of the Data Acquisition Rate in Low power Generation by Introducing Repeaters for a Solar-Powered Wireless Sensor Network

    ISHITANI NAOYA, KOBAYASHI KENTARO, OKADA HIRAKU, KATAYAMA MASAAKI

    IEICE technical report. MoNA, Mobile network and applications 

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Our goal is improvement of the data aquisition rate in a solar-powered wireless sensor network(WSN). One of the methods to reduce the amount of the energy consumption within the entire network is a cooperative transmission that uses a relay node when a source node transmits data. However, it does not focus on the management in low power generation, such as cloudy. Thereby there are the cases where nodes stop during the time due to the lack of energy in the battery. Therefore, here in our research we will introduce repeaters in WSN in order to prevent nodes from stop. The repeaters refrain from relay and instead mainly focus on battery charge in high power generation, such as daytime. And in low power generation, as repeaters relay packets from far-nodes positively by using sufficient amount of energy they charge during the daytime, we will try to prevent more nodes from stop and improve data aquisition rate.

    CiNii Article

  56. Poster Presentation : Performance Evaluation of Channel Assignment Methods for an Ad Hoc Network Using Balloons "SKYMESH" International conference

    MORI Atsushi, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki, MASE Kenichi

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2013.5

    Language:English   Presentation type:Poster presentation  

    It is very important to ensure communication systems for a large-scale disaster. As an emergency communication system for a large-scale disaster, a wireless network using balloons, SKYMESH, was proposed. An important issue for this network is to reduce interference among adjacent wireless links. To solve this issue, a channel assignment method to reduce interference was proposed so far, but its performance has never been evaluated. In this study, we evaluate the performance of the channel assignment method. In addition, we discuss problems of this method, and improve it.

    CiNii Article

  57. An Approach from Queueing Theory for Wireless Distributed Networks : Performance Analysis of Single-User/Multi-User MIMO Wireless Networks

    OKADA Hiraku, KUSUMOTO Hironori, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. ASN, Ambient intelligence and sensor networks 

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    The authors investigate wireless distributed networks from the view point of queueing theory, so far. This study introduces performance analysis of SU-/MU-MIMO (single-user/multi-user multiple-input multiple output) wireless distributed networks. At first, the multiplex efficiency of SU-/MU-MIMO at a certain sender node is evaluated by queueing theory. In addition, we suppose simultaneous transmissions from multiple sender nodes, and consider both the multiplex efficiency and the sender node density so that packets do not collied at receiver nodes. We investigate the area transmission efficiency, which is defined as the number of packets successfully transmitted per area and per time.

    CiNii Article

  58. [Poster Presentation] Performance Evaluation of Channel Assignment Methods for an Ad Hoc Network Using Balloons "SKYMESH "

    Atsushi Mori, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama, Kenichi Mase

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    It is very important to ensure communication systems for a large-scale disaster. As an emergency communication system for a large-scale disaster, a wireless network using balloons, SKYMESH, was proposed. An important issue for this network is to reduce interference among adjacent wireless links. To solve this issue, a channel assignment method to reduce interference was proposed so far, but its performance has never been evaluated. In this study, we evaluate the performance of the channel assignment method. In addition, we discuss problems of this method, and improve it.

    CiNii Article

  59. An Approach from Queueing Theory for Wireless Distributed Networks Performance Analysis of Single-User/Multi-User MIMO Wireless Networks

    Hiraku Okada, Hironori Kusumoto, Kentaro Kobayashi, Masaaki Katayama

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    The authors investigate wireless distributed networks from the view point of queueing theory, so far. This study introduces performance analysis of SU-/MU-MIMO (single-user/multi-user multiple-input multiple output) wireless distributed networks. At frst, the multiplex effciency of SU-/MU-MIMO at a certain sender node is evaluated by queueing theory. In addition, we suppose simultaneous transmissions from multiple sender nodes, and consider both the multiplex effciency and the sender node density so that packets do not collied at receiver nodes. We investigate the area transmission effciency, which is defned as the number of packets successfully transmitted per area and per time.

    CiNii Article

  60. Performance Evaluation of Information Advertisement Using Joint Random Network and Multi-Route Coding in Wireless Mesh Networks

    Yuki Sugao, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    In wireless mesh networks, flooding causes a broadcast storm problem. Random network coding is a technique that can mitigate the effect of the broadcast storm problem in wireless networks. However, it cannot correct bit errors, and it should forward more and more packets to recover bit errors. On the other hand, multi-route coding was proposed to reduce bit errors on wireless channels in wireless networks. This coding scheme can obtain a diversity gain by transmitting multiple coded packets on multiple routes. This paper evaluates the performance of the joint random network and multi-route coding scheme. The results show that the proposed scheme improves the transmission delay and packet delivery failure ratio compared with the conventional schemes.

    CiNii Article

  61. Performance evaluation of selected path by information sharing method using compressed sensing for link quality in wireless networks

    Shuhei Suzaki, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama

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    Event date: 2013.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    In this study, we propose an information sharing method for link quality in wireless networks. In the distributed wireless networks, each node establishes its route autonomously. The optimum route should be selected according to the change of radio propagation environment. Link-state routing is a technique that gathers link information and selects the optimum route from that information. Flooding is considered as an information gathering method, but it causes the broad-cast storm problem. We propose an information sharing method using compressed sensing, and evaluate selected path by the proposed method.

    CiNii Article

  62. AS-3-6 Effects of Channel Errors in a Wireless Feedback Control System for Cooperative Mlotion of Machines

    Tanaka Atsushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

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  63. BS-1-9 Evaluation of Mutual Information for Three Node Model in Energy Harvesting Wireless Sensor Networks

    FAN Xiaohui, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  64. B-5-217 A Study on Decision-Feedback Channel Tracking Scheme for Uplink Multiuser MIMO Systems

    ASAI Yusuke, FUKUZONO Hayato, MIZOGUCHI Masato, KATAYAMA Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  65. B-19-56 Maximum likelihood receiver using state observer for wireless feedback control systems

    KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  66. AS-3-8 Performance Improvement of a Feedback Control System in a Power Line Environment through the use of a Cyclostationary Noise-Adapted Predictive Control Scheme

    Carrizo Cesar, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

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  67. AS-3-7 Adaptive error coding for improving the performance of reference tracking in the wireless feedback control systems

    Hattori Shingo, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  68. Timing Detection of Switch to Auto Rate for Semi-fixed Rate Control in IEEE 802.11n Wireless Mesh Networks

    YOSHIMOTO Aklto, OKADA Hlraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Ad hoc networks IEICE technical report 

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    Event date: 2013.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    In a mesh network using IEEE 802.11n Wireless LAN(WLAN), it is desirable to select and use an optimum rate for each link. Semi-Fixed Rate Control(SFRC) is a technique that can select an optimum rate during autorate period, and use the optimum rate during fixed-rate period. However, it has an issue how to evaluate link quality and find the best timing to change fixed-rate period to autorate period. In this study, we investigate the relationship between RSSI(Recieved Signal Strangth Indicator) of each antenna and optimum rate, and propose a detection method of switch timing to auto rate for SFRC. We utilize multiple antennas, which is fbature of IEEE 802.11n, measure RSSI of each antenna, and detect a variation of optimum rate from RSSI fiuctuatlon.

    CiNii Article

  69. Cooperative transmission scheme for downlinks of cellular visible light communication systems with intensity modulation

    ASAKURA Shun, KOBAYASHI Kentarou, OKADA Hiraku, KATAYAMA Masaaki

    Technical report of IEICE. OCS 

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    Event date: 2013.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    We consider an indoor visible light communication for controlling mobile robots, which uses a cellular system in order to control a number of robots In this system, we show that by setting a proper field of view at the receiver of the robot, there are some regions that inter-cell interference can be negligible However, only setting the field of view at the receiver is not enough to ignore the inter-cell interference in all regions We propose a cooperative transmission scheme to communicate mobile robots in the region where the robots can not receive information because of the inter-cell interference The proposed scheme transmits the control information in cooperation with some nearest LED lights The simulation results show that the proposed scheme can increase the number of controllable mobile robots

    CiNii Article

  70. Development of Distributed Sensor Networks Using 900MHz-Band Wireless Modules International conference

    TAKEDA Kousuke, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    Ad hoc networks IEICE technical report 

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    Event date: 2013.1

    Language:English   Presentation type:Oral presentation (general)  

    In this exhibit, we show development of distributed sensor networks using 900MHz-band wireless modules. In this sensor network, each node broadcasts the information such as electrical power consumption, temperature, etc., collects it, and recognize the environment by processing the collected information. The developed sensor node uses Arduino as a platform and a 950MHz-band specified low-power wireless module.

    CiNii Article

  71. A Multi-Channel Receiver using the Dependence of Impulse Noise on Diffierent Channels

    ISHIMURE Ryota, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. WBS, Wideband System 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    In multi-channel signal transmission under the Middleton's class A impulse noise environment, we propose the receiver using the dependency of impulse noises of multi-channels. The proposed receiver estimates the number of the occurrence of impulse noises from received signals, and uses it for the signal detection. Numerical examples show that the performance improvement becomes larger as many channels are used, and enough performance improvement is obtained by using more than three channels. Moreover, we compare two types of receiver construction; one uses estimated distribution of the number of the occurrence of impulse noises, the other uses an estimated value of that, and discuss their performance and simplicity of the construction.

    CiNii Article

  72. A traffic reduction method with data compression at repeaters of a PLC multi-point data gathering system

    TANIGUCHI Tomohiro, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report. WBS, Wideband System 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    In this paper the data gathering system is realized by Power Line Communication to promote power saving by visualizing the data. In previous studies, the method of communication which choose autonomously the timing at low noise has been proposed. In that method, the traffic increased because of the packet retransmission by the repeater. In this study, we propose a method of reducing traffic by compressing the packets at the repeater. If the packet doesn't reach correctly to base station, repeater will compress some packets and send them at zero cross of supply voltage. Traffic reduction is shown by numerical examples and can improve the throughputs.

    CiNii Article

  73. Channel capacity of piggyback spectrum sharing with relay of a primary signal

    NAGANAWA Jun, KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    IEICE technical report 

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    Event date: 2012.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    This manuscript considers a secondary system sharing the spectrum with the primary system at the same time and frequency. The proposed overlay system relays the primary signal and overlays its own data on it. The previous studies have shown the prospective potential of this scheme using symbol error rate as a measure of performance. In addition to the error rate, this manuscript introduces the channel capacity and the achievable rates to evaluate the proposed scheme. The result shows that the proposed scheme allows the secondary signal to communicate at the high rate without harming the channel capacity of the primary system.

    CiNii Article

  74. A-5-15 A note on optimum receiver for wireless feedback control systems

    KOBAYASHI Kentaro, OKADA Hiraku, KATAYAMA Masaaki

    Proceedings of the Society Conference of IEICE 

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    Event date: 2012.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  75. A Study on a Joint Decoding Scheme for Random Network and Multi-Route Coding in Wireless Mesh Networks

    SUGAO Yuki, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. WBS, Wideband System 

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    Event date: 2012.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    In wireless mesh networks, flooding causes the broadcast storm problem, in which traffic increases rapidly. Random network coding is a technique that can mitigate the broadcast storm problem. However, it cannot correct bit errors. On the other hand, multi-route coding was proposed to reduce bit errors on wireless channels in wireless networks. In this coding scheme, diversity gain is obtained by transmitting coded packets on multiple routes. When both the random network and multi-route coding are employed, bit errors are increased by random network decoding. In this paper, we propose a decoding scheme that detects errors from the decoded sequence of random network coding, and determines liklihood of information sequence to improve the performance of random network and multi-route coding. Prom results of simulation, the proposed decoding scheme is superior to the conventional scheme.

    CiNii Article

  76. Reduction of Code Table Using Correlation of Observed Data

    ITO YUSAKU, KOBAYASHI KENTARO, OKADA HIRAKU, KATAYAMA MASAAKI

    IEICE technical report 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Our goal is the reduction of the amount of transmitted data in sensor networks. One method to reduce the transmitted data is source coding. One of efficient source coding methods is Huffman coding. When we employ Huffman coding in sensor network, each sensor node and a base station (BS) need the same code table. So, we need to consider the amount of code table size transmitted between each sensor node and the BS. In this paper, we propose a method which makes a common code table at the BS for all nodes. By comparing a method which makes individual code tables for all nodes, we show that the proposed method achieves very small code table and maintains high compression rate.

    CiNii Article

  77. A Study on Random Network and Multi-Route Coding for Flooding in Wireless Sensor Networks

    SUGAO Yuki, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report 

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    Event date: 2012.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    In this paper, we propose a joint coding scheme for flooding in wireless sensor networks. Random network coding is a technique that can mitigate the degradation due to packet losses in wireless networks. However, it cannot correct bit errors. On the other hand, multi-route coding was proposed to reduce bit errors on wireless channels in wireless networks. In this coding scheme, diversity gain is obtained by transmitting coded packets on multiple routes. We propose a robust coding scheme for packet losses and bit errors by using random network and multi-route coding. To show the effectiveness of the proposed coding scheme, we evaluate the performance of the proposed coding scheme. From results, the proposed scheme is superior to the random network coding for flooding.

    CiNii Article

  78. A-19-16 Development of Visual Light Communication System for the Visually Impaired

    Shime Motofumi, Katayama Masaaki, Mori Tadataka, Yamashita Fumiaki, Itoh Chikashi

    Proceedings of the IEICE General Conference 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  79. AI-1-1 Communication Technologies for Sustainable Low-Carbon Society

    Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  80. AP-2 Future applications with reliable robust radio control Invited

    Aoyagi Yasushi, Kawasaki Kunihiro, Sadakiyo Kazuhiro, Takebayashi Tomoyoshi, Tanaka Hirokazu, Miyashita Michifumi, Yamamoto Hideki, Li Huan-Bang, Hara Shinsuke, Kohno Ryuji, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    CiNii Article

  81. AS-4-1 A note on forward error correction for wireless feedback control system

    Hattori Shingo, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    Proceedings of the IEICE General Conference 

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    Event date: 2012.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  82. Variety of Wireless Channels and System Requirements International conference

    "Panel Discussion: Challenges in Advanced Communications and Services, The Sixth Advanced International Conference on Telecommunications (AICT2010)" 

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    Event date: 2010.5

    Language:English   Presentation type:Oral presentation (invited, special)  

  83. A-17-16 Sub-Pixel Estimation of LED Position for Visible Light Communication System using LED Array and High-Speed Camera

    NAGURA Toru, YAMAZATO Takaya, KATAYAMA Masaaki, YENDO Tomohiro, FUJII Toshiaki, OKADA Hiraku

    Proceedings of the IEICE General Conference 

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    Event date: 2010.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Article

  84. Evaluation and Performance Improvement of a Cooperative Sensing System with Losses of Information from Sensing Nodes

    "Technical Report of IEICE, vol. 109, no. 61 (SR2009-5), pp.75-79," 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  85. Joint decoding scheme using bit-level correlation of experimentally observed data

    "Technical Report of IEICE, vol.MoMuC2009-2, pp.7-12" 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  86. Reliability and Robustness of Wireless Networks

    "IEICE General Conference, BP-6-2" 

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    Event date: 2009.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  87. Experience in Energy Saving in Higashiyama Campus

    Nagoya Univ. Energy Management Research Group Annual Report 

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    Event date: 2009.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  88. Phase Compensation for Narrowband Power-Line Communication Channels with Cyclic Time-Varying Features

    Technical Report of IEICE 

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    Event date: 2009.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  89. Influence of channel errors on a wireless-controlled rotary inverted pendulum

    Technical Report of IEICE 

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    Event date: 2009.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  90. TOA UWB Position Estimation with 2 receivers and one known reflector

    "Technical Report of IEICE, vol. WBS2008-90, pp. 211-216" 

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    Event date: 2009.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  91. ISOMAC based Energy Efficient TDMA-MAC Protocol for Sensor Networks

    "IEICE General Conference, B-20-42, p.646" 

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    Event date: 2009.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  92. 衛星/地上周波数共用移動通信システムにおける資源割当てのためのトラヒック予測

    "阿萬友洋, 山里敬也, 片山正昭"

    電子情報通信学会技術研究報告 

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    Event date: 2009.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  93. Cluster-based Cooperative Transmission considering Residual Power of Wireless Sensor Nodes

    "Technical Report of IEICE, vol.USN2008-76, pp.83-87" 

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    Event date: 2009.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  94. Performance evaluation of turbo encoding and joint iterative decoding for multiple correlated sources

    "Technical Report of IEICE, vol.USN2008-47, pp.51-55" 

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    Event date: 2008.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  95. [Panel Discussion] Some Considerations on Reliability and Robustness of Radio Control Systems

    "Technical Report of IEICE, vol.WBS2008-28, pp.3-8" 

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    Event date: 2008.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  96. A note on joint decoding of spatially and temporally correlated sources

    "Communications Society Conference of IEICE, B-20-6, p.342" 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  97. Various Radio Channels and Adaptive Communications

    "Enginnering Sciences Society Conference of IEICE, AK-2-1" 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  98. A modulation scheme without channel state information for cognitive radio overlay systems

    "Communications Society Conference of IEICE, B-17-9, p.452" 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  99. Cooperative transmission in distributed sensor networks using visible light communication

    "Proc. of 10th DSPS Educators Conference, pp.72-73" 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  100. Bit and power allocation for power-line communications under nonwhite and cyclostationary noise environment

    "Communications Society Conference of IEICE, A-5-2, p.89" 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  101. Performance Comparison of OFDM and MC-CDMA in Inter-Vehicle Communications

    "Technical Report of IEICE, vol.ITS2008-8, pp.1-6" 

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    Event date: 2008.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  102. EXIT Analysis for distributed encoding and joint iterative decoding of correlated sources

    4th Workshop on Wireless Distributed Networks 

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    Event date: 2008.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  103. Some Considerations on Reliability and Robustness of Radio Control Systems

    4th Workshop on Wireless Distributed Networks 

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    Event date: 2008.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  104. A modulation scheme for a cognitive radio system to overlay on a secondary user

    "Technical Report of IEICE, vol.SR2008-2, pp.5-10" 

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    Event date: 2008.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  105. Adaptive modulation for power-line communications with nonwhite and cyclostationary noise

    "IEICE General Conference, A-5-18, p.145" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  106. Autonomous Collision-less Slot Assignment Algorithm for Wireless Sensor Networks

    "IEICE General Conference, B-20-28, p.569" 

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    Event date: 2008.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  107. Performance Comparison of SC/MMSE Turbo Equalization and MMSE Equalization in Inter-Vehicle Communication using MC-CDMA

    "IEICE General Conference, B-5-65, p.451" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  108. Iterative joint decoding of multiple correlated sources using Turbo codes

    "IEICE General Conference, B-20-4, p.545" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  109. Introduction of Fractional Frequency Reuse and Fast Retrial Algorithm for uplink of Multi-Cell OFDMA s-ALOHA systems

    "IEICE General Conference, B-5-47, p.433" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  110. Carrier Assignment to Improve the Transmission Efficiency of Edge Terminal in OFDMA Downlink Cellular System

    "IEICE General Conference, B-5-44, p.430" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  111. Time Variation of Narrowband Channel Characteristics of Indoor Power-Line Channels

    "IEICE General Conference, A-5-17, p.144" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  112. CDMA slotted ALOHA Systems with Successive Interference Cancellation for Inter-Vehicle Communications

    "IEICE General Conference, A-17-12, p.323" 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  113. A note on EXIT analysis for distributed encoding and joint decoding of correlated sources

    "Technical Report of IEICE, vol.RCS2007-125, pp.79-83" 

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    Event date: 2007.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  114. Indoor Propagation Measurements for Wireless Controls

    "Technical Report of IEICE, vol.RCS2007-97, pp.1-6" 

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    Event date: 2007.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  115. Performance evaluation of cooperative transmission

    "Technical Report of IEICE, , USN2007-48, pp.73-76" 

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    Event date: 2007.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  116. Performance comparison of CSMA and CDMA slotted ALOHA in Inter-Vehicle communication

    "Communications Society Conference of IEICE, B-5-89, p.411" 

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    Event date: 2007.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  117. A Study on Random Access Scheme using Channel Division for Multi-Cell OFDMA uplink

    "Communications Society Conference of IEICE, B-5-62, p.384" 

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    Event date: 2007.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  118. Throughput evaluation of CSMA and CDMA slotted ALOHA in Inter-Vehicle communication

    "Technical Report of IEICE, vol.RCS2007-55, pp.13-18" 

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    Event date: 2007.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  119. Performance evaluation of cooperative transmission in distributed sensor networks using FPGA

    "Proceedings of 9th DSPS Educators Conference, pp.91-92" 

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    Event date: 2007.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  120. Performance Improvement of Downlink MC-CDMA Cellular System using Different Arrival Time of the Adjacent Cell Signal

    "Technical Report of IEICE, vol.RCS2007-68, pp.87-91" 

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    Event date: 2007.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  121. Measurement of the Narrowband Channel Characteristics \\in Single-Phase Three-Wire Indoor Power-Line Channels

    "Technical Report of IEICE, vol.WBS2007-30, SIP2007-81, pp.53-58" 

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    Event date: 2007.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  122. Ultrasonic Array Emitter for Short-range Automotive Targets Detection System

    "Technical Report of IEICE, vol.ITS2007-12, pp.15-20" 

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    Event date: 2007.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  123. Experiments on a Wireless Visible-Light Communication System using an LED Sign Panel

    "Technical Report of IEICE, Vol.OCS2007-14, pp.25-29" 

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    Event date: 2007.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  124. Channel measurement of a visible light communication system with an LED sign panel

    "Technical Report of IEICE, Vol.OCS2007-15, pp.31-35" 

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    Event date: 2007.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  125. MIMO Equalizer for Pulse-ShapingOFDM Systems in Dispersive Time-Varying Channels

    "Proc. of Academia Program, Wireless Technology Park 2007, pp.50-51" 

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    Event date: 2007.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  126. Visible Light Communication using LED TrafficLight and car equipped with camera

    "Proc. of Academia Program, Wireless Technology Park 2007, pp.38-39" 

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    Event date: 2007.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  127. A Study on Joint Decoding for Wireless Sensor Networks

    "Proc. of Academia Program, Wireless Technology Park 2007, pp.26-27" 

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    Event date: 2007.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  128. "Keynote: Power line channels: frequency and time selective, Noise statistics of indoor PLC channels" International conference

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    Event date: 2007.3

    Language:English   Presentation type:Oral presentation (invited, special)  

  129. [Tutorial] Research Activities and Future Research Topics on Power-Line Communications

    IEICE General Conference 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  130. Technical issuess for Ubiquitous Wireless Infrastracture

    IEICE Mobile Communication Workshop 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

    Birdview of the technical issuess for Ubiquitous Wireless Infrastracture. Importance of advanced relay technology including cooperative diversity and route diversity in multihop networks.

  131. 送受信機における雑音の電力相関を活用した電力線通信システム

    "川口晃生, 岡田啓, 山里敬也, 片山正昭"

    電子情報通信学会 総合大会 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  132. マルチユーザOFDMにおけるユーザ位置に基づく優先度を利用した無線資源割当

    "木村勝幸, 山里敬也, 片山正昭"

    電子情報通信学会 総合大会 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  133. 非コンテンション型車車間通信方式MTLPにおける車列ネットワーク間通信の実現手法

    "正村充,岡田啓,山里敬也,片山正昭"

    電子情報通信学会 総合大会 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  134. 分散ノード間協力通信における非同期受信

    "仲尾亘司, 山里敬也, 岡田啓, 片山正昭"

    電子情報通信学会 総合大会 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  135. MC-CDMA方式における他セル信号の到着ずれを利用した特性改善

    "伏木 雅, 山里 敬也, 岡田 啓, 片山 正昭"

    電子情報通信学会 総合大会 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  136. マルチホップセルラネットワークにおけるリンク品質に基づいた経路次元符号化のための経路構築法

    "今井均,岡田啓,山里敬也,片山正昭"

    "第6回アドホックネットワーク・ワークショップ, pp.5-5 - 5-8" 

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    Event date: 2007.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  137. フェージング環境における送信情報系列間の相関を利用した誤り訂正復号法の特性評価

    "小林健太郎,山里敬也,岡田啓,片山正昭"

    "電子情報通信学会技術研究報告, vol.SN2006-45, pp.45-51" 

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    Event date: 2006.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  138. Influence of Transmit and Receive Correlations on Performance of the MIMO System with Multiple Antennas and Relay Terminals

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    Event date: 2006.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  139. 中継器間での伝送制御情報の交換を必要としないSTBC協力中継手法に関する一検討

    "打田良介, 岡田啓, 山里敬也, 片山正昭"

    "電子情報通信学会技術研究報告, vol. RCS2006-142, pp. 55-60" 

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    Event date: 2006.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  140. 複数送受信アンテナを用いた空間ダイバシチにおける再生中継手法に関する一検討

    "打田良介, 岡田啓, 山里敬也, 片山正昭"

    "電子情報通信学会 通信ソサイエティ大会, B-5-122, p.482" 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  141. OFDM受信機におけるADCの非線形性を利用した干渉影響の低減に関する一検討

    "澤田学, 山里敬也, 片山正昭"

    電子情報通信学会 通信ソサイエティ大会 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  142. 車載用レーダネットワークにおける複数障害物の位置推定手法に関する一検討

    "羽多野裕之,山里敬也,岡田啓,片山正昭"

    "自動車技術会 秋季大会, No. 134-06, pp.21-26, Sept. 2006." 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  143. Visible Light Communication with LED Sign Panel as a Voice Navigation System for Visually Handicapped Persons

    Optical Space Transmission/Optical Radio Technology Forum 2006 

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    Event date: 2006.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  144. 動的なチャネル割り当てを行ったトークンの周期的伝送による双方向車車間通信方式

    "正村充, 岡田啓, 牧戸知史, 山里敬也, 片山正昭"

    "第4回アドホックネットワーク・ワークショップ, pp.4-21 - 4-24" 

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    Event date: 2006.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  145. 中継器を用いたMIMOシステムにおけるアンテナ間相関が特性に与える影響

    "打田良介,岡田啓,山里敬也,片山正昭"

    "電子情報通信学会技術研究報告, vol. RCS2006-46, pp. 65-70" 

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    Event date: 2006.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  146. 車載用レーダネットワークにおけるMAP推定法を用いた複数障害物の位置推定手法およびその簡単化に関する一考察

    "羽多野裕之,山里敬也,岡田啓,片山正昭"

    "電子情報通信学会技術研究報告, vol.ITS2006-3, pp.11-16" 

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    Event date: 2006.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  147. 送信情報系列間の相関を利用した繰り返し通信路誤り訂正復号法 - センサノード数が二つ以上の場合への拡張 -

    "小林健太郎,山里敬也,岡田啓,片山正昭"

    "電子情報通信学会技術研究報告, vol.SN2006-32, pp.91-97" 

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    Event date: 2006.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  148. 符号化FSK分散ノード間協力通信による伝送距離延長

    "仲尾亘司,山里敬也,岡田啓,片山正昭"

    "電子情報通信学会技術研究報告, vol.SN2006-28, pp.67-72" 

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    Event date: 2006.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  149. 自動車用近接レーダネットワーク技術

    "羽多野裕之,山里敬也,岡田啓,片山正昭"

    "Wireless Technology Park 2006 アカデミアプログラム, pp.34-35" 

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    Event date: 2006.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  150. 工場内産業機器の無線制御のための高信頼無線通信技術

    "打田良介,岡田啓,山里敬也,片山正昭"

    Wireless Technology Park 2006 アカデミアプログラム 

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    Event date: 2006.4

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  151. [Invited Talk] Robust Reliable Radio for Industrial Radio Control

    "Technical Report of IEICE, IT2005-73, ISEC2005-130, WBS2005-87, pp.51-55" 

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    Event date: 2006.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  152. [Panel] Communication Channels for Home-Area-Networks

    TB-3-1 Communications Society Conference of IEICE 

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    Event date: 2002.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  153. [Invited Paper] Robust Reliable Radio for Wireless Control of Intelligent Industrial Equipment

    "Technical Report of IEICE, vol.IT2002-14, pp.19-24" 

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    Event date: 2002.7

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  154. Robust Reliable Radio for Wireless Control of Intelligent Industrial Equipment International conference

    First Triangular Cooperation Workshop 

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    Event date: 2002.6

    Language:English   Presentation type:Oral presentation (invited, special)  

  155. Software Receiver with Super Conductivity Devices

    Japan Society of Applied Physics 

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    Event date: 2002.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  156. Recent Topics on High-Speed Power-Line Communications

    Institutes on Electrical Engineers of Japan 

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    Event date: 2002.2

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  157. Recent Topics on High-Speed Power-Line Communications

    Invited Lecuture for student associate members of Kansai-Section of the Four Institutes on Electricity and Communications 

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    Event date: 2001.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  158. ブロードバンド時代のための屋内ネットワーク

    情報理論とその応用シンポジウム 

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    Event date: 2001.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  159. ITS Today and Tommarrow

    "ITS-Symposium, International ITS Show 2001" 

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    Event date: 2001.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  160. DS-CDMA v.s. MC-CDMA

    "Technical Report of IEICE, SST2001-47, pp.37-44" 

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    Event date: 2001.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  161. [Panel] Subjects and its solutions for the technical regulation conformity certification of software radio

    Software Radio Work Shop 

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    Event date: 2001.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  162. [Invited] Technical Challenges for the Realization of Robust Reliable and High-Speed Power-Line Communication Systems

    "IEICE Technical Report, vol.SST2000-60, pp.43-49" 

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    Event date: 2000.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  163. [Panel] Toward Practical Software Defined Radio Systems

    "Communications Society Conference of IEICE, vol.PB-3" 

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    Event date: 2000.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  164. "CDMA移動体通信システムにおける特性改善技術 ,電気関係学会東海支部連合大会シンポジウム講演(1999/09)"

    電気関係学会東海支部連合大会シンポジウム講演 

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    Event date: 1999.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  165. [特別講演]ソフトウエア無線システムへの超伝導技術の応用

    "片山正昭, 藤巻朗"

    "電子情報通信学会ソフトウエア無線研究会, pp.31-37" 

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    Event date: 1999.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  166. 超高信頼性無線通信システムのための時間・周波数-物理空間多次元符号化方式

    移動体通信「産学官交流シンポジウム」 

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    Event date: 1999.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  167. Throughput Performance of CDMA ALOHA (invited)

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    Event date: 1999.6

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  168. [特別講演]超伝導素子とソフトウエア無線技術を用いたインテリジェント・スーパー・ベースステーション構想

    "藤巻朗, 片山正昭"

    "電子情報通信学会回路とシステム, ディジタル信号処理, 通信方式 合同研究" 

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    Event date: 1999.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  169. "交通システムの高度情報化と通信システム,平成10年度電気学会 電子・情報・システム部門大会,vol.A-17-2,p.353 (1998/10)"

    電気学会 電子・情報・システム部門大会 

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    Event date: 1998.10

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  170. インテリジェント・スーパー・ベースステーション -通信システム技術の 観点から-

    ",日本学術振興会超伝導エレクトロニクス第146委員会,平成10年度第1回ディジタル応用分科会研究会" 

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    Event date: 1998.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  171. "新しい時代の移動体通信システムのための無線伝送技術,電気関係学会東海支部連合大会シンポジウム講演,vol.S4-5,p.S-41"

    電気関係学会東海支部連合大会シンポジウム講演 

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    Event date: 1998.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  172. [パネル討論] CDMA と TDMA - 移動体衛星への適用 -

    電子情報通信学会ソサイエティ大会 

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    Event date: 1996.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  173. Construction of a Decentralized Sensor Network in a 920MHz Band(Technology Exhibit)

    ISHIKAWA Yousuke, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report. ASN, Ambient intelligence and sensor networks  2014.1.16  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    In a traditional sensor network, a management node such as a sink node collects sensing information, and carries out applications implemented according to the information. However, if application is achieved inside the space, the management node does not have to collect information, and it is also considered that each node autonomously collects informations processes it to carry out the application. In this exhibit, we show our development of a decentralized sensor network using 920MHz-band wireless modules. The developed sensor node uses a 920MHz-band low-power wireless module and Arduino as its platform. In this sensor network, each node broadcasts the information such as electrical power consumption, temperature, etc., and is able to collect the information.

    CiNii Article

  174. Development of Distributed Sensor Networks Using 900MHz-Band Wireless Modules

    TAKEDA Kousuke, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report  2013.1.17  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    In this exhibit, we show development of distributed sensor networks using 900MHz-band wireless modules. In this sensor network, each node broadcasts the information such as electrical power consumption, temperature, etc., collects it, and recognize the environment by processing the collected information. The developed sensor node uses Ardumo as a platform and a 950MHz-band specified low-power wireless module.

    CiNii Article

  175. Development of Distributed Sensor Networks Using 900MHz-Band Wireless Modules

    TAKEDA Kousuke, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report  2013.1.17  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    In this exhibit, we show development of distributed sensor networks using 900MHz-band wireless modules. In this sensor network, each node broadcasts the information such as electrical power consumption, temperature, etc , collects it, and recognize the environment by processing the collected information. The developed sensor node uses Arduino as a platform and a 950MHz-band specified low-power wireless module.

    CiNii Article

  176. Data signal modulation scheme based on perceptually uniform color space for image sensor-based visible light communication International conference

    Sasaki Taito, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2019 IEEE VTS ASIA PACIFIC WIRELESS COMMUNICATIONS SYMPOSIUM (APWCS 2019)  2019 

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    Language:English   Presentation type:Oral presentation (general)  

  177. Cross-layer combination of predictive control and error correction coding for wireless feedback control International conference

    Kasai Kohei, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2019 IEEE VTS ASIA PACIFIC WIRELESS COMMUNICATIONS SYMPOSIUM (APWCS 2019)  2019 

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    Language:English   Presentation type:Oral presentation (general)  

  178. Construction of a Node-combined Wireless Network for Large-scale Disasters International conference

    Mori Atsushi, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki, Mase Kenichi

    2015 12TH ANNUAL IEEE CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE  2015 

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    Presentation type:Oral presentation (general)  

  179. Area Transmission Efficiency of Single-User and Multi-User MIMO in Grid-Topology Wireless Mesh Networks International conference

    Kusumoto Hironori, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2015 IEEE 81ST VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING)  2015 

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    Presentation type:Oral presentation (general)  

  180. An Information Sharing Method Using Compressed Sensing in Wireless Distributed Networks International conference

    Suzaki Shuhei, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2014 GLOBECOM WORKSHOPS (GC WKSHPS)  2014 

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  181. An Analyzing Method Using Self-Organizing Map for MIMO Mesh Networks International conference

    Minematsu Yoshihiro, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2015 21ST ASIA-PACIFIC CONFERENCE ON COMMUNICATIONS (APCC)  2015 

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    Presentation type:Oral presentation (general)  

  182. A Wireless Cooperative Motion Control System with Mutual Use of Control Signals International conference

    Kondo Tsugunori, Kobayashi Kentarou, Katayama Masaaki

    2011 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT)  2011 

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  183. A Wireless Control System with Mutual Use of Control Signals for Cooperative Machines International conference

    Kondo Tsugunori, Kobayashi Kentaro, Katayama Masaaki

    IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES  2012.4  一般社団法人 電子情報通信学会

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    Presentation type:Oral presentation (general)  

    This paper discusses a wireless control system for cooperative motion of multiple machines, and clarifies the influence of packet losses on the system behavior. We focus on the synchronization of the motion of the machines, and using the nature of wireless, we propose a new wireless control scheme for maintaining the synchronization performance under packet loss conditions. In the proposed scheme, each controlled object (plant) utilizes control information destined for all plants, and the main controller also utilizes state information of all plants. The additional information of the other controller-plant pairs is used to compensate lost information. As an example of the controlled plants, rotary inverted pendulums, which move synchronously with wireless connections in their control-feedback loops, are considered. Numerical examples confirm the superiority of the proposed scheme from the view-point of the synchronization of the motion of the plants.

    CiNii Article

  184. A Study on the Reduction of Synchronization Error using a Relay of Predictive Control Information in Wireless Control of Multiple Plants International conference

    Tanaka Atsushi, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2013 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)  2013 

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  185. A Study on Network and Multi-Route Coding for Information Advertisement in Wireless Mesh Networks International conference

    Sugao Yuki, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2013 IEEE 24TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR, AND MOBILE RADIO COMMUNICATIONS (PIMRC)  2013 

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    Presentation type:Oral presentation (general)  

  186. A Note on Adaptive Coding Scheme for Minimizing Tracking Error in Wireless Feedback Control Systems International conference

    Hattori Shingo, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2013 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)  2013 

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    Presentation type:Oral presentation (general)  

  187. A Note on Adaptive Coding Scheme for Improvement of Reference Tracking in Wireless Feedback Control Systems International conference

    Hattori Shingo, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    39TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2013)  2013 

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    Presentation type:Oral presentation (general)  

  188. Flight Schemes Considering Breaks for Wireless Relay Networks Using Drones during Large-Scale Disasters International conference

    Yanai Hiroki, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2018 IEEE 88TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-FALL)  2018 

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    Language:English   Presentation type:Oral presentation (general)  

  189. Inclination of Flying Drones in Aerial Wireless Relay Networks International conference

    Okada Hiraku, Suzuki Jyo, Yanai Hiroki, Kobayashi Kentaro, Katayama Masaaki

    2019 IEEE 90TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2019-FALL)  2019 

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    Language:English   Presentation type:Oral presentation (general)  

  190. Cooperative Repeaters to Improve Data Collection in Low Power Generation for Solar-powered Wireless Sensor Networks International conference

    Ishitani Naoya, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2015 12TH ANNUAL IEEE CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE  2015 

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    Presentation type:Oral presentation (general)  

  191. Improved Decoding Methods of Visible Light Communication System for ITS using LED Array and High-Speed Camera International conference

    Nagura Toru, Yamazato Takaya, Katayama Masaaki, Yendo Tomohiro, Fujii Toshiaki, Okada Hiraku

    2010 IEEE 71ST VEHICULAR TECHNOLOGY CONFERENCE  2010 

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    Presentation type:Oral presentation (general)  

  192. i-LightHouse: a Visible Light Communication System for the Visually Impaired International conference

    Funahashi Akinobu, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)  2011 

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    Presentation type:Oral presentation (general)  

  193. Feedback Control Scheme with Prediction for Power Line Communication Channels International conference

    Carrizo Cesar, Kobayashi Kentaro, Okada Hiraku, Katayama Masaaki

    2013 IEEE INTERNATIONAL CONFERENCE ON SMART GRID COMMUNICATIONS (SMARTGRIDCOMM)  2013 

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    Presentation type:Oral presentation (general)  

  194. Experimental Validation of TOA UWB Positioning with Two Receivers Using Known Indoor Features International conference

    Kietlinski-Zaleski Jan, Yamazato Takaya, Katayama Masaaki

    2010 IEEE-ION POSITION LOCATION AND NAVIGATION SYMPOSIUM PLANS  2010 

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    Presentation type:Oral presentation (general)  

  195. Dynamic Bandwidth Allocation of Satellite/Terrestrial Integrated Mobile Communication System International conference

    Yamazato Takaya, Aman Tomohiro, Katayama Masaaki

    2010 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE GLOBECOM 2010  2010 

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    Presentation type:Oral presentation (general)  

  196. Cooperative Transmission Scheme with Inactive Node Reactivation Condition for Solar-Powered Wireless Sensor Networks International conference

    Ota Kentaro, Kobayashi Kentaro, Yamazato Takaya, Katayama Masaaki

    2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)  2011 

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    Presentation type:Oral presentation (general)  

  197. Limiting the Sensing Frequency to Improve the Data Collection Rate in Low Power Generation for Solar-powered Wireless Sensor Networks

    ISHITANI NAOYA, KOBAYASHI KENTARO, OKADA HIRAKU, KATAYAMA MASAAKI

    IEICE technical report. MoNA, Mobile network and applications  2014.5.15  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Our goal is improvement of the data collection rate in solar-powered wireless sensor networks(WSNs). One of the methods to improve the data collection rate is a cooperative transmission by which a node relays data from a source node. However, the cooperative node is not sufficient to prevent the data collection rate from decline in low power generation, such as in cloudy and at night. We tackled this problem by introducing nodes that only relay data without sensing data. As a result, we clarified that our proposal improved the data collection rate in the low power generation. On the other hand, it suppressed the improvement of the data colletion rate because nodes that do not sense data are fixed in place. Therefore, we propose the method in which sensing frequency is limitted for some nodes that do not have sufficient battery level. Then we compare the performance of our proposal with the one that fixed nodes do not sense data and the one that randomly selected nodes are limited in sensing frequency.

    CiNii Article

  198. Performance Comparison of Area Transmission Efficiency between Single-User MIMO and Multi-User MIMO in Wireless Mesh Networks

    KUSUMOTO Hironori, OKADA Hiraku, KOBAYASHI Kentaro, KATAYAMA Masaaki

    IEICE technical report  2012.12.13  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    It is expected that performance of wireless mesh networks will be improved by applying MU-MIMO (Multi-User Multiple-Input Multiple-Output). If the number of the packets whose receiver node is the same is not enough large, SU-MIMO (Single-User MIMO) cannot achieve capacity enhancement by the spatial multiplexing. By contrast, MU-MIMO always achieves it because of the possibility of multiplexing packets regardless of the receiving node of them. In past studies, we focus one transmission node. But, it is necessary to consider that multiple nodes transmit packets simultaneously. In this paper, we introduce both the transmission node density and the multi-plexing efficiency, and derive the area transmission efficiency that denotes the number of successfully transmitting packets per an area and per a time. From a result, depending on a condition, the area transmission efficiency of SU-MIMO can be superior to one of MU-MIMO because the transmission node density of SU-MIMO is high. In addition, by selecting the transmission packets so as to reduce the number of receiving node, MU-MIMO is superior to the other transmission methods.

    CiNii Article

  199. Flight Schemes Considering Breaks for Wireless Relay Networks Using Drones during Large-Scale Disasters International conference

    Yanai Hiroki, Okada Hiraku, Kobayashi Kentaro, Katayama Masaaki

    2018 IEEE 88TH VEHICULAR TECHNOLOGY CONFERENCE (VTC-FALL)  2018 

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    Language:English   Presentation type:Oral presentation (general)  

  200. Keynote Address : An Invitation to Reliable Communication and Control : Its Important and Interesting Features Invited

    KATAYAMA Masaaki

    IEICE technical report. RCC, Reliable communication and control  2014.5.29  The Institute of Electronics, Information and Communication Engineers

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Control communications have a wide variety of applications including medical and healthcare systems, financial systems, disaster protection/recovery, building management, manufacturing systems, and robots/humanoid, and a key technology for large scale systems and systems of systems such as intelligent transportation systems and smart grid/community systems. This keynote address illustrates important and interesting features of the control communications, mainly from an academic viewpoint. At first, it is explained that a control system has to be regarded as a probabilistic system when imperfectness of control communications is considered. Then differences of the requirements for conventional and control communications is clarified. It is noteworthy that the performance of communication layer can/should be evaluated by using the quality of its upper layer, i.e., control layer, and cross-layer optimization of control and communication layers is possible. In addition, new measures/viewpoints of communication qualities are introduced. Information theory of freshness of information, necessity of communication protocols for control, and simultaneous control of multiple objects are briery outlined as examples of interesting topics on control communications.

    CiNii Article

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Research Project for Joint Research, Competitive Funding, etc. 12

  1. 情報提示が省エネ行動に与える影響

    2012.5 - 2013.3

    国内共同研究 

  2. 可視光通信による視覚障がい者向け情報灯台システムの研究開発

    2010.9 - 2012.3

    経済産業省 平成22年度地域イノベーション創出研究開発事業 

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    Grant type:Competitive

    視覚障がい者向けの新たな情報提供手段として、公共の場における放送型の情報配信を実現する『情報灯台システム』の開発を行うことにある。 この『情報灯台システム』は、公共空間に設置したLED面発光パネルを情報発信源とする送信機から、視覚障碍者が持ち運びできる小型な携帯受信機に、可視光通信による配信コンテンツの一括ダウンロード転送を行うことで情報提供を実現するものである。

  3. 電気エネルギー有効利用のための無線制御システム

    2010.6 - 2011.3

    国内共同研究 

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    電気エネルギー有効利用のための無線制御システムに関する研究動向調査と意見交換

  4. 大学・社会における二酸化炭素排出削減のための電力および環境情報収集・提示技術

    2010.5 - 2011.3

    国内共同研究 

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    大学のような社会における電気利用料の総量とピーク削減、再生可能エネルギ有効利用のために社会構成員である人間をエネルギシステムの重要な構成要素ととらえ、人文学的アプローチに最先端の工学技術を活用し、実地試験により効果を確認する。また、大規模システムへの適用を想定した、新しい通信技術の開発を行う。

  5. 名古屋大学を実験場とした電気エネルギーの立場からの二酸化炭素排出削減社会実験

    2009.6 - 2010.3

    国内共同研究 

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    電気エネルギーの立場からの二酸化炭素排出削減社会実験

  6. 面発光LEDパネルを用いた可視光データ放送装置の開発

    2008.7 - 2009.3

    科学技術振興機構 シーズ発掘試験 

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    Grant type:Competitive

    駅構内等の公共空間の広告・案内板用の面発光LEDパネルに可視光通信技術を適用し,ディジタルデータ放送機能を実現するための通信技術の試験開発.

  7. 計測・制御のためのキロヘルツ帯電力線通信方式の高信頼性化

    2007

    科学技術振興機構 シーズ発掘試験 

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    Grant type:Competitive

    商用電源(100V,200V)を供給する電力線に信号を重畳することで情報通信を行う電力線通信で,キロヘルツ帯(10kHz~450kHz)を用いて,計測・制御での利用に耐える高い信頼性を実現する技術の試験開発.

  8. 電力線通信システムの高性能化に関する応用研究

    2006.5 - 2007.3

    学内共同研究 

  9. LED面発光パネルによる視覚障害者向け音声情報提供装置の調査

    2006 - 2006.6

    NEDO 大学発事業創出実用化研究開発事業費助成金 

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    Grant type:Competitive

  10. 電力線通信システムの高性能化に関する基礎研究

    2005.8 - 2006.3

    国内共同研究 

  11. 次世代車車間通信のための通信方式の研究

    2005.1 - 2006.3

    国内共同研究 

  12. 高度移動体無線通信システムへの超伝導ディジタル技術の適用に関する研究

    1999.8 - 2004.3

    総務省 

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    Grant type:Competitive

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KAKENHI (Grants-in-Aid for Scientific Research) 7

  1. Optical Wireless MIMO Systems with High Density Arrays for Indoors Industrial Machine Networks

    Grant number:17H03265  2017.4 - 2020.3

    KATAYAMA Masaaki

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    Authorship:Principal investigator 

    Grant amount:\17550000 ( Direct Cost: \13500000 、 Indirect Cost:\4050000 )

    This study considers the wireless communications for industrial machines in factories. In the study of high-speed and long-distance in-factory communications with optical MIMO, the importance of the array constellations is revealed, and superiority of one-dimensional arrangements of array elements over the traditional rectangular constellations are clarified. The results of communication experiments show that the proposed system achieves 100Mbps for 60m distance, which is far above the results of previous works. For sensor network systems with optical CDMA, the introduction of hard-limiters and successive interference cancellation is proposed, and performance improvement is shown by numerical analysis and experiments.

  2. Wireless Control Systems for Cooperative and Synchronous Motions of Multiple Machines

    Grant number:22360152  2010 - 2012

    KATAYAMA Masaaki

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    Authorship:Principal investigator 

    Grant amount:\17290000 ( Direct Cost: \13300000 、 Indirect Cost:\3990000 )

    Wireless control systems formultipleplants with cooperative and synchronous motionshave been investigated. Since wireless channels arestochastic, the overall wireless control systems haveto be treated as stochastic systems. For such systems performance measures based on probabilities have been introduced, including measures of synchronicity of motions. The most important result of this research project is the fact that communication adaptive to the behavior/state of controller/plant and total cross layer optimization of control and communication are possible and effective.This fact is represented with evidences based on analysis and experiments.

  3. 室内無線LANにおける時間・空間符号化信号のためのアダプティブアレイアンテナ

    2000.5 - 2003.3

    科学研究費補助金  基盤研究(C)

    片山正昭

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    Authorship:Principal investigator 

    送受信機が、複数のアンテナを持ち,物理空間次元も活用した高度な処理を行う室内無線システムについて検討を行った.送信信号として従来の単一周波数搬送波信号を用いた場合については,送受信アンテナを同時に最適化するようなシステムについて検討を行い,送受信アンテナの総合的な最適化を理論的に明らかにした.変調方式にOFDM方式の信号を用いた場合については,誤り訂正符号の設計段階で,伝播環境とマッピング手法を考慮にいれた方式を提案し、従来の SFBC方式を上回る性能を持つことを示した.このようなシステムの設計・解析には室内電波環境を知る必要がある.そこでOFDM信号のような複数周波数の信号を用い,複数エレメントで同時かつ連続時間で測定を行う測定系を開発し,それにより室内電波伝搬特性の時間,周波数、位置への依存性等の有益な知見を得た.さらにシステムの評価尺度についても検討を行い,無線通信システムの信頼性を反映する性能評価尺度を見出した.送受信側のそれぞれに複数のアンテナを持つシステムについてこの尺度を用いた性能評価を行い,従来の平均性能との差異を明らかにした.副次的な研究成果として,多元接続方式としてCDMA 方式をもちいた場合、受信アダプティーブアレイアンテナの制御を干渉除去後に行うシステムを考え、干渉除去とアダプティーブアレイアンテナを一体制御する意義を明らかにした.また空間アンテナ制御,干渉除去技術をCDMAパケット通信システムに応用することで、多元接続干渉下での同期捕捉特性の改善手法を示した.さらにOFDM信号の実用上の問題点である大きな振幅変動を軽減する手法や,非線形増幅における特性劣化の状況についても計算機実験と数式解析による評価を行った.

  4. Basic research on the network for monitoring of avian influenza structured by bird-to-bird and aircraft-to-bird telecommunications

    Grant number:24241058  2012.10 - 2015.3

    NAKAJIMA Isao

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    Authorship:Coinvestigator(s) 

    The researchers have developed and implemented the technology of multicast wireless packet system assigning the token tablet by time sharing to support the bird-to-bird telecommunications that can perform automatic file exchange at each terminal with recognizing the network topology by itself and of aircraft-to-bird two-way multicast that can bring a new ID-data collecting system using with ADS-B on 1090MHz and with window patch antenna on the aircraft on 2450MHz.
    They expressed that this technique shall be extremely effective for screening of the avian influenza and for the pandemic prevention and has already confirmed the technical standard from the Japanese authority, intend to attach on wild swan to get daily vital signs and navigation data with exchanging files by each terminal to bring back all birds’ health data such as respiratory rate, heart rate, strain of the skeletal muscle measured by 3-axial angle accelerometers when one could fly back to Japan.

  5. A study on the application of information communication technology for the purpose of wild birds tracking to prevent the pandemic

    Grant number:21241042  2009 - 2011

    NAKAJIMA Isao

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    Authorship:Coinvestigator(s) 

    We have developed the wireless packet transceiver with 2.4 to 500 kbps of data speed on S band for wild bird to track its position and ID and applied for the model authorization to the Ministry of Internal Affairs and Communications. If these packet terminals attached at migratory birds by Yamashina Institute for Ornithology, and returned to our country safely in the next season, we can get IDs and navigation data from packet transceiver. These data can help crisis control. Also, we investigated the environment of the infected zone of H5N1 in Russia and Mongolia, and analyzed the microwave propagation environment. The unification will be very useful in future to study on the crisis control and prevention of avian influenza.

  6. Cross-layer design and optimization of control and communication for reliable remote control systems

    Grant number:15K21071  2015.4 - 2018.3

    Kobayashi Kentaro

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    Authorship:Other 

    To provide communication techniques for reliable remote control systems, we have tackled cross-layer design and optimization problem based on control and communication theory. From a view point of data compression and error correction of control data, performance improvement techniques have been investigated. Proposed cross-layer techniques (data compression techniques based on the importance of control data, error correcting coding techniques based on the importance of control data, joint data compression and error correcting coding techniques, and error correcting decoding techniques based on a priori information of control data) can achieve higher control quality than the conventional techniques based only on the communication layer.

  7. A study on joint optimization of control and communication layers for wireless control systems

    Grant number:25870313  2013.4 - 2015.3

    KOBAYASHI Kentaro

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    Authorship:Other 

    From a new perspective of improving the wireless communication layer based on information of the control layer, performance improvement of wireless control systems has been investigated. In sub-theme (1), an optimum receiver for suppressing channel error is proposed. The proposed receiver predicts a future state of the controlled plant and uses the predicted information as an a priori knowledge to detect control signals. By using the proposed receiver, the channel error is minimized and an improvement of control quality is achieved. In sub-theme (2), an adaptive channel error correction is proposed. The proposed predicts future control error in the controlled plant and utilizes the predicted information to switch error correction codes for minimizing the control error. By using the proposed method, an improvement of control quality is achieved. In addition, performance of wireless feedback control systems with a robust control design is demonstrated.

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Industrial property rights 6

  1. マルチホップ無線ネットワークシステム

    岡田啓、山里敬也、片山正昭、鯉江尚央、中川信之

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    Applicant:独立行政法人科学技術振興機構

    Application no:特願2004-44436  Date applied:2004.2

    Announcement no:特開2005-236752 

    Country of applicant:Domestic  

  2. 雑音環境適応デジタル受信装置

    片山正昭、山里敬也、岡田啓、平山雄一

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    Applicant:独立行政法人科学技術振興機構

    Application no:特願2003-367970  Date applied:2003.10

    Announcement no:特開2005-136517 

    Patent/Registration no:特許3993556号  Date registered:2007.8 

    Country of applicant:Domestic  

  3. PLC System

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    Application no:2003−81250  Date applied:2003.3

    Announcement no:2004−289661 

    Country of applicant:Domestic  

  4. 多信号の送受信方式及び多信号受信装置

    山里敬也,岡田啓,片山正昭,小川明

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    Applicant:財団法人名古屋産業科学研究所

    Application no:2000−306321  Date applied:2000.10

    Announcement no:2002−118494 

    Country of applicant:Domestic  

    互いに相関を持った状態で同時に伝送される複数の送信信号の数より受信側の検波器の数が少ない場合でも、送信信号を検波器によって検波した検波信号を処理することによって全ての送信データを適正に求めることが可能な多信号の送受信方式及び多信号受信装置を提供する。

  5. ダイバーシチ受信装置

    山里敬也、王偉忠、岡田啓、片山正昭、小川明

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    Applicant:科学技術振興事業団

    Application no:特願2000-266149  Date applied:2000.9

    Announcement no:特開2002-77013 

    Patent/Registration no:特許3616856号  Date registered:2004.11 

    Country of applicant:Domestic  

  6. 誤り制御符号化装置および誤り制御復号装置

    山里敬也,片山正昭,小川明,鄭辰

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    Applicant:科学技術振興事業団

    Application no:平11−243840  Date applied:1999.8

    Announcement no:2001−69121 

    Country of applicant:Domestic  

    入力情報系列のレートを高くする場合、入力情報系列のレートを最初に高くして、それを積極的に利用する誤り制御を行い、特性の改善をはかる。

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Teaching Experience (On-campus) 15

  1. First Year Seminar A

    2020

  2. Electrical Engineering and Communication Laws

    2020

  3. Wireless Communication Systems

    2020

  4. Digital Circuits with Exercises

    2020

  5. Advanced Experiments and Exercises in Information Engineering

    2020

  6. Seminar on Communication Systems 1D

    2020

  7. Seminar on Communication Systems 1C

    2020

  8. Seminar on Communication Systems 1B

    2020

  9. Seminar on Communication Systems 1A

    2020

  10. Seminar on Communication Systems 2E

    2020

  11. Seminar on Communication Systems 2D

    2020

  12. Seminar on Communication Systems 2C

    2020

  13. Seminar on Communication Systems 2B

    2020

  14. Seminar on Communication Systems 2A

    2020

  15. Advanced Lectures on Communication and Image Processing

    2020

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Teaching Experience (Off-campus) 2

  1. 電気電子工学専攻特別講義(大学院生対象

    2002.4 - 2003.3 三重大学)

  2. 大学院特別講義

    2001.4 - 2002.3 名古屋工業大学)