Faculty Profiles - YAMAZATO Takaya

Papers - YAMAZATO Takaya

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The Influence of an ADC on Bit Error Rate Performance of a Software-Defined Base Station

K. Matsubara, M. Katayama, T. Yamazato, A. Ogawa

Technical Report of IEICE Vol. SR99 ( 19 ) page： 67-72 1999.11

A Study on OFDM Synchronization Scheme with Subtraction Operation

T. Shibata, N. Itoh, M. Fujimoto, H. Itoh, N. Suzuki, K. Ohtsuka T. Yamazato, A. Ogawa

Technical Report of IEICE Vol. RCS99 ( 135 ) page： 97-101 1999.10

An integrated voice/data CDMA packet communications with multi-code CDMA scheme Reviewed

Sandouk A, Yamazato T, Katayama M, Ogawa A

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES Vol. E82A ( 10 ) page： 2105 - 2114 1999.10

An integrated voice/data CDMA packet communications with multi-code CDMA scheme Reviewed

A Sandouk, T Yamazato, M Katayama, A Ogawa

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES Vol. E82A ( 10 ) page： 2105 - 2114 1999.10

Language：English Publishing type：Research paper (scientific journal) Publisher：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG

In this paper, we consider an integrated voice and data system over CDMA Slotted-ALOHA (CDMA S-ALOBA). We investigate its performance when multi-code CDMA (MC-CDMA) is applied as a multi-rate scheme to support users which require transmission with different bit rates. Two different classes of data users are transmitted together with voice. Performance measurement is obtained in respect of throughput for data and outage probability for voice. Moreover, we consider the Modified Channel Load Sensing Protocol (MCLSP) as a traffic control to improve the throughput of data. As a result, we show that the MC-CDMA technique is an effective one to obtain good throughput for data users at an acceptable voice outage probability. Furthermore, we show that with MCLSP, the throughput of data can be improved to reach a constant value even at a high offered load of data users.

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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 (VTC Fall) Vol. IEEE VTC'102 Fall page： - 1999.9

A Study on Multiple Trellis Coded Modulation for Multicarrier Systems

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

Technical Report of IEICE Vol. SST99 ( 32 ) page： 13-18 1999.9

Chip-by-chip Turbo coded DS/SS systems

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

1999 IEICE General Conference page： - 1999.9

Chip-by-chip Turbo coded DS/SS systems Reviewed

YAMAZATO Takaya, Zheng Cheng, KATAYAMA Masaaki, OGAWA Akira

Proceedings of the Society Conference of IEICE Vol. 1999 ( 0 ) page： 97 1999.8

Permission Probability Control to Improve Service Fairness in CDMA Cellular ALOHA Systems

K. Mori, T. Kobayashi, T. Yamazato, A. Ogawa

Technical Report of IEICE Vol. RCS99 ( 91 ) page： 29-36 1999.8

A Study for the Throughput Performance of CDMA Slotted ALOHA Systems

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

Technical Report of IEICE Vol. SST99 ( 21 ) page： 37-42 1999.7

Throughput Performance of CDMA ALOHA (invited) Invited

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

Technical Report of IEICE Vol. SAT99-41 page： 99 1999.6

A Study of Chip-by-Chip Turbo Coding for DS-CDMA Systems

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

Technical Report of IEICE Vol. SST99-8 page： 49-54 1999.6

Effect of Beam Pattern on Capacity of Multibeam LEOS Communication Systems

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

Technical Report of IEICE Vol. SAT99 ( 39 ) page： 83-90 1999.6

Performance Improvements applying an Adaptive Array Antenna for Transmission at a Mobile Station

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

1999 IEICE General Conference Vol. B ( 5 ) page： 37 1999.3

Application of ARQ Scheme to Inter-frame Picture Decoding

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

1999 IEICE General Conference Vol. B ( 5-243 ) page： 594 1999.3

A Study of Error Correcting Codes Applied to OFDM Systems

W. Wang, C.Zheng, T. Yamazato, M. Katayama and A. Ogawa

Technical Report of IEICE Vol. IT98 ( 75 ) page： 49-54 1999.3

A Study on Decorrelating Detector for Multi-Processing Gain CDMA Systems

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

1999 IEICE General Conference Vol. B ( 5-111 ) page： 462 1999.3

A Study on the Error Control Scheme in Data Transmission for Positioning of Sea Turtles

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

Technical Report of IEICE Vol. SANE99 ( 64 ) page： 105-108 1999.2

Effect of Beam Pattern on Capacity of Multibeam LEOS Communication Systems

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

Technical Report of IEICE, vol.SAT99-39, pp.83-90 (1999.6) Vol. SAT99 ( 39 ) page： 83-90 1999

A Study of Error Correcting Codes Applied to OFDM Systems

W. Wang, C.Zheng, T. Yamazato, M. Katayama and A. Ogawa

Technical Report of IEICE, vol.IT98-75, pp.49-54 (1999-03) Vol. IT98 ( 75 ) page： 49-54 1999

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Papers - YAMAZATO Takaya