Faculty Profiles - YAMAZATO Takaya

Papers - YAMAZATO Takaya

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Performance Analysis of a Multi Processing-Gain CDMA System with Adaptive Array Antenna at Base Station

L. Zhang, M. Katayama, T. Yamazato and A. Ogawa

Technical Report of IEICE Vol. A・P97 ( 215 ) page： 101-108 1998.2

A new acquisition scheme for the DS/SS signal with large carrier frequency offset Reviewed

Okuda S, Katayama M, Yamazato T, Ogawa A

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE Vol. 81 ( 2 ) page： 24 - 33 1998.2

A new acquisition scheme for the DS/SS signal with large carrier frequency offset Reviewed

S Okuda, M Katayama, T Yamazato, A Ogawa

ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE Vol. 81 ( 2 ) page： 24 - 33 1998.2

Language：English Publishing type：Research paper (scientific journal) Publisher：SCRIPTA TECHNICA-JOHN WILEY & SONS

This paper considers the direct-sequence spread-spectrum (DS/SS) communication system, and proposes an initial acquisition scheme for the spread signal in an environment where a large frequency offset is included in the carrier. By the proposed scheme, not only is the initial acquisition of the spread signal realized, but also the carrier frequency offset can be estimated to some extent. The proposed configuration assumes acquisition by digital signal processing, using the fast Fourier transform (FFT). Numerical examples are shown for the mean acquisition time and the frequency synchronization characteristics by the proposed scheme, and it is shown that the proposed scheme can realize excellent acquisition performance even if there exists a large frequency offset in the carrier. (C) 1998 Scripta Technica.

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A new acquisition scheme for the DS/SS signal with large carrier frequency offset Reviewed

Okuda S., Katayama M., Yamazato T., Ogawa A.

Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi) Vol. 81 ( 2 ) page： 24 - 33 1998.2

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)

DOI： 10.1002/(sici)1520-6440(199802)81:2<24::aid-ecjc3>3.0.co;2-5

Scopus

CDMA slotted ALOHA system with finite buffers Reviewed

Okada H.

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Vol. E81-A ( 7 ) page： 1473 - 1478 1998.1

Queueing analysis of CDMA unslotted aloha systems with finite buffers Reviewed

Okada H.

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences Vol. E81-A ( 10 ) page： 2083 - 2091 1998.1

Performance Analysis of a Multi Processing-Gain CDMA System with Adaptive Array Antenna at Base Station

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

Technical Report of IEICE Vol. A・P97-215 page： 101-108 1998

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

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

EMPS'98 Vol. 1 page： 131-145 1998

New Quasi-Synchronous Sepuences for CDMA Slotted ALOH Systems Reviewed

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

IEICE Transaction on Fundamentals of Electronics, Communications and Computer Sciences Vol. E81-A ( 11 ) page： 2274-2280 1998

Inittial 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 of Electronics, Communications and Computer Sciences Vol. E81-A ( 11 ) page： 2281-2290 1998

A Channel Control Method for Multi-Carrier Transmission Considering Channel Response Reviewed

T. Shibata, N. Suzuki, M. Fujimoto, K. Nishikawa, T. Yamazato and A. Ogawa

APMC'98 Vol. 3 page： 853-856 1998

An Integrated Voice and Multi-Code CDMA Data System for CDMA Slotted-ALOHA with Modified Channel Load Sensing Protocol

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

Symposium on Information Theory and Its Applications (SITA) Vol. 2 page： 523-526 1998

Application of TURBO Code to Band-limited VIDEO Signal Transmission

M. Honjo, M. Matsui, T. Yamazato, M. Katayama, and A. Ogawa

Symposium on Information Theory and Its Applications (SITA) Vol. 26.7,2 page： 619-622 1998

A Study on Parallel Decording of Turbo-Codes Using Soft-output Viterbi Decorder

M. Matsui, S. Makido, T. Yamazato, M. Katayama and A. Ogawa

Technical Report of IEICE Vol. IT98 ( 21 ) page： 17-22 1998

A Study on Cross-Correlation Property in Orthogonal Multi-Code SYstems

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

Technical Report of IEICE Vol. SST98-13 page： 19-24 1998

Weight Control Scheme of Adaptive Array Antennas in CDMA Systems

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

Technical Report of IEICE Vol. CS98-56 page： 39277 1998

A New Acquisition Scheme of DS/SS Signals using Space Diversity Techniques

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

Technical Report of IEICE Vol. SST98-24 page： 53-60 1998

Tutorial : Introduction to CDMA Invited Reviewed

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

1998 IEEE Global Telecommunications Conference/Tutorial Note Vol. Globecom98 ( TI-13 ) page： - 1998

CDMA Unslotted ALOHA Systems with Finite Buffers Reviewed

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

IEEE ICUCP'98 Vol. ICUPC98 ( 2 ) page： 1143-1147 1998

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 (ISITA) Vol. ISITA98 ( 2 ) page： 491-494 1998

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