IEICE SEARCH SYSTEM

Shuji KUBOTA

A New User Selection Measure in Block Diagonalization Algorithm for Multiuser MIMO Systems Riichi KUDO Yasushi TAKATORI Kentaro NISHIMORI Atsushi OHTA Shuji KUBOTA Masato MIZOGUCHI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/10/01 Vol. E92-B No. 10 pp. 3206-3218 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiuser MIMO, user selection, block diagonalization, channel capacity,
	Summary \| Full Text:PDF (2.1MB)

Tree Based Approximate Optimal Signal Detectors for MIMO Spatial Multiplexing Systems Wenjie JIANG Yusuke ASAI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/02/01 Vol. E92-B No. 2 pp. 544-558 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: complexity reduction, maximum likelihood detection, MIMO system, spatial multiplexing,
	Summary \| Full Text:PDF (2.2MB)

Antenna Selection Method for Terminal Antennas Employing Orthogonal Polarizations and Patterns in Outdoor Multiuser MIMO System Naoki HONMA Riichi KUDO Kentaro NISHIMORI Yasushi TAKATORI Atsushi OHTA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/06/01 Vol. E91-B No. 6 pp. 1752-1759 Type of Manuscript: Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation) Category: Smart Antennas & MIMO Keyword: MIMO, multiuser, urban environment, polarization, pattern, antenna selection,
	Summary \| Full Text:PDF (1.2MB)

Proposal of Wireless Traffic Control Schemes for Wireless LANs Takefumi HIRAGURI Takeo ICHIKAWA Masataka IIZUKA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/05/01 Vol. E91-B No. 5 pp. 1340-1348 Type of Manuscript: Special Section PAPER (Special Section on Communication Quality) Category: QoS Control Mechanism and System Keyword: wireless LAN, IEEE802.11, traffic control, load barancing, QoS,
	Summary \| Full Text:PDF (1.1MB)

New Downlink Beamforming Method for Cooperative Multiple Access Point Systems Riichi KUDO Yasushi TAKATORI Kentaro NISHIMORI Atsushi OHTA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/09/01 Vol. E90-B No. 9 pp. 2303-2311 Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation) Category: Smart Antennas Keyword: MIMO, downlink, beamforming, multiple access point system,
	Summary \| Full Text:PDF (1.7MB)

New Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO Yasushi TAKATORI Riichi KUDO Atsushi OHTA Koichi ISHIHARA Kentaro NISHIMORI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/09/01 Vol. E90-B No. 9 pp. 2312-2320 Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation) Category: Smart Antennas Keyword: multiuser MIMO, uplink, beamforming, frequency offset,
	Summary \| Full Text:PDF (783.2KB)

Proposal for System Diversity on Software Defined Radio Takashi SHONO Kazuhiro UEHARA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/09/01 Vol. E84-A No. 9 pp. 2346-2358 Type of Manuscript: PAPER Category: Mobile Information Network and Personal Communications Keyword: software defined radio, algorithm diversity, system diversity, QoS,
	Summary \| Full Text:PDF (1.6MB)

An Effective Data Transmission Control Method for Mobile Terminals in Spot Communication Systems Hiroshi YOSHIOKA Masashi NAKATSUGAWA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/07/20 Vol. E83-A No. 7 pp. 1328-1337 Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks) Category: Keyword: spot communication systems, data transmission method, intelligent transport systems (ITS), DSRC protocol,
	Summary \| Full Text:PDF (1.4MB)

Software Radio Base and Personal Station Prototypes Yasuo SUZUKI Kazuhiro UEHARA Masashi NAKATSUGAWA Yushi SHIRATO Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/06/20 Vol. E83-B No. 6 pp. 1261-1268 Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio and Its Technologies) Category: Keyword: software, software radio, digital signal processor, personal handy phone system,
	Summary \| Full Text:PDF (795.6KB)

High Capacity and Wide Coverage Cell Station for Personal Communication Systems Kiyoshi KOBAYASHI Tomoaki KUMAGAI Shuji KUBOTA Shigeaki OGOSE Takeshi HATTORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1999/01/20 Vol. E82-B No. 1 pp. 112-119 Type of Manuscript: PAPER Category: Communication Systems and Transmission Equipment Keyword: personal communication, cell station, diversity, coherent detection, burst-by-burst AFC,
	Summary \| Full Text:PDF (468.9KB)

Bit-Stream-Arranged Weighted Modulation Scheme for Low Delay Spread Frequency Selective Fading Channels Kiyoshi KOBAYASHI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1998/07/20 Vol. E81-A No. 7 pp. 1452-1458 Type of Manuscript: Special Section PAPER (Special Section on Fundamentals of Multi-dimensional Mobile Information Network) Category: Keyword: weighted modulation, frequency selective fading, micro-cell system, ADPCM, PCM,
	Summary \| Full Text:PDF (590.7KB)

Bit Significance Selective Frequency Diversity Transmission Tomoaki KUMAGAI Kiyoshi KOBAYASHI Katsuhiko KAWAZOE Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1998/03/20 Vol. E81-B No. 3 pp. 545-552 Type of Manuscript: PAPER Category: Communication Theory Keyword: frequency diversity, spectrum efficiency, fading, ADPCM,
	Summary \| Full Text:PDF (695.3KB)

An FFT Interference Detection Scheme for Interference Suppression in Digital Satellite Communication Systems Takatoshi SUGIYAMA Masanobu SUZUKI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/09/20 Vol. E80-B No. 9 pp. 1352-1362 Type of Manuscript: PAPER Category: Satellite Communication Keyword: digital satellite communication, co-channel interference, interference suppression, notch filter, FEC, FFT,
	Summary \| Full Text:PDF (742.2KB)

Fully Digital Burst Modem for Satellite Multimedia Communication Systems Kiyoshi KOBAYASHI Tetsu SAKATA Yoichi MATSUMOTO Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/01/20 Vol. E80-B No. 1 pp. 8-15 Type of Manuscript: Special Section PAPER (Special Issue on Advances in Satellite Communications toward Multimedia Era) Category: Modem and Coding Keyword: digital burst modem, TDMA, satellite communication, VLSIC,
	Summary \| Full Text:PDF (854.1KB)

A Time Division Multiple Access-Time Division Duplex combined with an Alternated Frequency Duplexer for Wireless Personal Communications Katsuhiko KAWAZOE Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/11/20 Vol. E79-B No. 11 pp. 1688-1695 Type of Manuscript: PAPER Category: Mobile Communication Keyword: TDMA, TDD, FDD, fading, diversity, microcell,
	Summary \| Full Text:PDF (722.9KB)

A Half-Chip Offset QPSK Modulation CDMA Scheme Employing Differential Detection for Advanced Wireless LAN Systems Takatoshi SUGIYAMA Masato MIZOGUCHI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/05/20 Vol. E79-B No. 5 pp. 693-700 Type of Manuscript: PAPER Category: Radio Communication Keyword: offset QPSK-CDMA, nonlinear channel, differential detection, forward error correction, time diversity, frequency utilization efficiency,
	Summary \| Full Text:PDF (584.5KB)

A Reliable Packet Transmission Method for TDMA Based Wireless Multimedia Communications Katsuhiko KAWAZOE Yoshihisa SUGIMURA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/03/20 Vol. E79-B No. 3 pp. 251-256 Type of Manuscript: Special Section PAPER (Special Issue on Advanced Adaptive Radio Communication Technologies) Category: Access, Network Keyword: packet, multimedia, personal communication, TDMA, fading, diversity,
	Summary \| Full Text:PDF (478.9KB)

An Integrated Interference Suppression Scheme with An Adaptive Equalizer for Digital Satellite Communication Systems Takatoshi SUGIYAMA Masanobu SUZUKI Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/02/20 Vol. E79-B No. 2 pp. 191-197 Type of Manuscript: PAPER Category: Satellite Communication Keyword: satellite communication, co-channel interference, interference suppression, notch filter, FEC, adaptive equalizer,
	Summary \| Full Text:PDF (548.1KB)

Open Loop Reverse Modulation Carrier Recovery Scheme for Rician and Rayleigh Fading Environments Tetsu SAKATA Shuji KUBOTA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1996/01/20 Vol. E79-B No. 1 pp. 45-51 Type of Manuscript: PAPER Category: Mobile Communication Keyword: radio communication, carrier recovery, open loop, reverse modulation, anti-fading,
	Summary \| Full Text:PDF (495.6KB)

Phase Ambiguity Resolver for PCM Sound Broadcasting Satellite Service with Low Power Consumption Viterbi Decoder Employing SST Scheme Kazuhiko SEKI Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1995/09/20 Vol. E78-B No. 9 pp. 1269-1277 Type of Manuscript: PAPER Category: Communication Systems and Transmission Equipment Keyword: phase ambiguity, Viterbi decoder, PCM sound broadcasting, communication satellites,
	Summary \| Full Text:PDF (703.3KB)

VLSI Implemented 60 Mb/s QPSK/OQPSK Burst Digital Demodulator for Radio Application Yoichi MATSUMOTO Kiyoshi KOBAYASHI Tetsu SAKATA Kazuhiko SEKI Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1994/12/20 Vol. E77-C No. 12 pp. 1873-1880 Type of Manuscript: Special Section PAPER (Special Issue on Multimedia, Analog and Processing LSIs) Category: Multimedia System LSIs Keyword: demodulator, carrier recovery, bit-timing recovery, VLSI, TDMA,
	Summary \| Full Text:PDF (796.3KB)

Ultra-High-Speed and Universal-Coding-Rate Viterbi Decoder VLSIC--SNUFEC VLSI-- Katsuhiko KAWAZOE Shunji HONDA Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1994/12/20 Vol. E77-C No. 12 pp. 1888-1894 Type of Manuscript: Special Section PAPER (Special Issue on Multimedia, Analog and Processing LSIs) Category: Multimedia System LSIs Keyword: FEC, Viterbi decoding, convolutional encoding, VLSIC, satellite communication systems,
	Summary \| Full Text:PDF (743.1KB)

A New Fully-Digitalized π/4-Shift QPSK Modulator for Personal Communication Terminals Tetsu SAKATA Kazuhiko SEKI Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1994/07/20 Vol. E77-B No. 7 pp. 921-926 Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications) Category: Keyword: digitalized modulator, π/4-shift QPSK, low power consumption,
	Summary \| Full Text:PDF (448.7KB)

A New Burst Coherent Demodulator for Microcellular TDMA/TDD Systems Yoichi MATSUMOTO Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1994/07/20 Vol. E77-B No. 7 pp. 927-933 Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications) Category: Keyword: demodulator, carrier-recovely, clock-recovery, coherent-detection, TDMA/TDD,
	Summary \| Full Text:PDF (586.2KB)

A Frequency Utilization Ffficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels Takatoshi SUGIYAMA Hiroshi KAZAMA Masahiro MORIKURA Shuji KUBOTA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1993/05/20 Vol. E76-B No. 5 pp. 480-487 Type of Manuscript: Special Section PAPER (Special Issue on Satellite Communications Networking and Applications) Category: Keyword: SSMA-QPSK signals, high speed QPSK signals, superposed transmission, FEC, interference cancellation, non-linear channel,
	Summary \| Full Text:PDF (687.4KB)

A Suitable Combination of Modulation and FEC Schemes for Satellite Digital Video Communication Networks Shuji KUBOTA Masahiro MORIKURA Kiyoshi ENOMOTO Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1993/05/20 Vol. E76-B No. 5 pp. 497-507 Type of Manuscript: Special Section PAPER (Special Issue on Satellite Communications Networking and Applications) Category: Keyword: satellite communication, modulation, FEC, digital video communication,
	Summary \| Full Text:PDF (880.1KB)

DSD (Double Soft Decision) Concatenated Forward Error Correction Scheme Shunji HONDA Shuji KUBOTA Masahiro MORIKURA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1992/08/20 Vol. E75-B No. 8 pp. 747-754 Type of Manuscript: Special Section PAPER (Special Issue on the 4th Japan-Korea Joint Conference on Communications, Networks, Switching Systems and Satellite Communications (4th JC-CNSS)) Category: Keyword: concatenated codes, soft decision, Viterbi decoding,
	Summary \| Full Text:PDF (606.5KB)