Faculty Profiles - YAMAZATO Takaya

Papers - YAMAZATO Takaya

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Throughput of Spread Unslotted Aloha in an Additive White Gaussian Noise Channel

T. Sato, K. Toshimitsu, T. Yamazato, M. Katayama and A. Ogawa

Technical Report of IEICE Vol. SST94 ( 9 ) page： 25-30 1994.6

A Study of M-algorithm combined with Pre-Decoding

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

Technical Report of IEICE Vol. CS94 ( 37 ) page： 39275 1994.6

Multiple-Symbol Differential Detection on 16 Circular Shaped Signal Constellation

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

Technical Report of IEICE Vol. RCS94 ( 36 ) page： 55-60 1994.6

A NOVEL SPREAD SLOTTED ALOHA SYSTEM WITH CHANNEL LOAD SENSING PROTOCOL Reviewed

TOSHIMITSU K, YAMAZATO T, KATAYAMA M, OGAWA A

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS Vol. 12 ( 4 ) page： 665 - 672 1994.5

A NOVEL SPREAD SLOTTED ALOHA SYSTEM WITH CHANNEL LOAD SENSING PROTOCOL Reviewed

K TOSHIMITSU, T YAMAZATO, M KATAYAMA, A OGAWA

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS Vol. 12 ( 4 ) page： 665 - 672 1994.5

Language：English Publishing type：Research paper (scientific journal) Publisher：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

This paper presents a noval spread slotted Aloha system with channel load sensing protocol (CLSP). CLSP is an effective scheme to improve the throughput performance in spread unslotted Aloha systems. In spread slotted Aloha systems, however, it does not make sense to utilize CLSP because the slot size is usually the same as the packet size. The slot size of the proposed system is set less than the packet size, thereby enabling us to apply CLSP and improving the throughput performance. Another feature of the proposed system is that the system is not likely affected by the time difference between channel load sensing and timing of packet access, which we call the access timing delay. Throughput performance of the proposed system is evaluated in the presence of the access timing delay and a significant increase of the throughput is shown compared with that of spread unslotted Aloha with CLSP.

DOI： 10.1109/49.286673

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Acquisition of DS/SS Signal with Frequency Offset using Matched Filters

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

Technical Report of IEICE Vol. SST93-109 page： 55-60 1994.3

A Study on Bit-Interleaved Coded Modulation for a Rayleigh Fading Channel

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

Technical Report of IEICE Vol. IT93-116 page： 61-66 1994.3

A Novel Variable Source Coding Algorithm Based on LZW Adopting Move to Front Method

S. Hayashi, J. Kubo, T. Yamazato and I. Sasase

1994 IEICE Spring Conference Vol. A-370 page： - 1994.3

Diversity Effect on Coded Modulation System in Rayleigh Channel

T. Yamazato, M. Katayama and A. Ogawa

1994 IEICE Spring Conference Vol. A-364 page： - 1994.3

Throuput of Spread Unslotted Aloha System

T. Sato, K. Toshimitsu, T. Yamazato, M. Katayama and A. Ogawa

1994 IEICE Spring Conference Vol. A-278 page： - 1994.3

Performance of Bit-by-Bit Interleaved Trellis-Coded 16QAM in Land Mobile Communications

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

1994 IEICE Spring Conference Vol. B-358 page： - 1994.3

Simultaneous Transmission of two Spread Spectrum Signals of Different Process Gains

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

Technical Report of IEICE Vol. SAT93 ( 90 ) page： 17-24 1994.2

Spread Unskotted Aloha 方式のスループット特性

岡田啓, 佐藤毅, 山里敬也, 片山正昭, 小川明

1994年電気学会東海支部連合大会 page： 516 1994

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 Communications Conference (GLOBECOM'94) Vol. Globecom94 ( 18019 ) page： 1748-1752 1994

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. 12 ( 4 ) page： 665-672 1994

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 (ISITA) Vol. ISITA94 page： 109-113 1994

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 (ISITA) Vol. ISITA94 page： 917-920 1994

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： 554-558 1994

Performance of 16-QAM with Increased Diversity on Raleigh Fading Channels Reviewed

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

International Symposium on Information Theory and Its Applications (ISITA) Vol. ISITA94 page： 1133-1137 1994

Near-Far Problem on Hybrid Direct-Sequence/Slow-Frequency-Hopping Spread-Spectrum Multiple-Access. Reviewed

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

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Vol. PIMRC94 ( C3-2 ) page： 319-323 1994

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Papers - YAMAZATO Takaya