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Research Output

1997

Improved ADPCM Voice Signal Transmission Employing Click Noise Detection Scheme for TDMA-TDD Personal Communication Systems

Kubota, S., Dobashi, A., Suzuki, M., Hasumi, T. & Kato, S., 1997 Feb 1, In : IEEE Transaction on Vehicle Technologies.

Research output: Contribution to journalArticle

5 Citations (Scopus)
5 Citations (Scopus)
1996

A coded vsb-qpsk transmission scheme for digital satellite communications in co-channel interference environments

Sugiyama, T., Kubota, S., Morikura, M. & Kato, S., 1996 Dec 1, In : IEEE Transactions on Aerospace and Electronic Systems. 32, 3, p. 1174-1181 8 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

A half-chip offset QPSK modulation CDMA scheme employing differential detection for advanced wireless LAN systems

Sugiyama, T., Mizoguchi, M. & Kubota, S., 1996 Jan 1, In : IEICE Transactions on Communications. E79-B, 5, p. 693-700 8 p.

Research output: Contribution to journalArticle

An integrated interference suppression scheme with an adaptive equalizer for digital satellite communication systems

Sugiyama, T., Suzuki, M. & Kubota, S., 1996 Jan 1, In : IEICE Transactions on Communications. E79-B, 2, p. 191-196 6 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

A reliable packet transmission method for tdma based wireless multimedia communications

Kawazoe, K., Sugimura, Y. & Kubota, S., 1996 Jan 1, In : IEICE Transactions on Communications. E79-B, 3, p. 251-256 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Bit significance selective frequency diversity transmission - voice quality improvement in fading channels

Kumagai, T., Kobayashi, K., Kawazoe, K. & Kubota, S., 1996 Jan 1, p. 910-914. 5 p.

Research output: Contribution to conferencePaper

Bit-stream-arranged weighted modulation scheme for frequency selective fading channels

Kobayashi, K. & Kubota, S., 1996 Dec 1, p. 1258-1262. 5 p.

Research output: Contribution to conferencePaper

DS-CDMA wireless access method with inter-cell access for personal communications

Ogose, S., Kubota, S. & Hattori, T., 1996 Jan 1, In : IEEE Vehicular Technology Conference. 1, p. 610-614 5 p.

Research output: Contribution to journalConference article

High Performance Coherent Demodulator LSIC for Wireless Personal Communication

Matsumoto, Y., Kubota, S. & Kato, S., 1996 Aug 1, In : IEEE Transaction on Vehicle Technology.

Research output: Contribution to journalArticle

1 Citation (Scopus)

High-performance coherent demodulator lsic for wireless personal communications

Matsumoto, Y., Kubota, S. & Kato, S., 1996 Dec 1, In : IEEE Transactions on Vehicular Technology. 45, 3, p. 475-483 9 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Open loop reverse modulation carrier recovery scheme for rician and rayleigh fading environments

Sakata, T. & Kubota, S., 1996 Jan 1, In : IEICE Transactions on Communications. E79-B, 1, p. 45-51 7 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
1995

A High Efficient and Interference Resistant Half-Chip Offset QPSK-CDMA Scheme for Wireless LAN Systems

Sugiyama, T., Mizoguchi, M., Kubota, S. & Kato, S., 1995 Nov 1, In : IEEE International Conference on Global Communications (Globecom'95). p. 2166-2170

Research output: Contribution to journalArticle

A Reliable Channel Control Method for Wireless Multimedia Communications

Sugimura, Y., Kawazoe, K. & Kubota, S., 1995 Nov 1, In : IEEE International Conference on Universal Personal Communications (ICUPC'95). p. 476-480

Research output: Contribution to journalArticle

High efficient and interference resistant half-chip offset QPSK-CDMA scheme for wireless LAN systems

Sugiyama, T., Mizoguchi, M., Kubota, S. & Kato, S., 1995 Dec 1, p. 2166-2170. 5 p.

Research output: Contribution to conferencePaper

High quality and very low power consumption one-chip baseband LSIC for personal handy phone system

Mizoguchi, M., Sakata, T., Kobayashi, K., Matsumoto, Y., Kubota, S. & Karo, S., 1995 Dec 1, p. 1262-1266. 5 p.

Research output: Contribution to conferencePaper

High-Quality and Very Low Power Consumption One-chip Baseband LSIC for Personal Handy Phone System

Mizoguchi, M., Sakata, T., Kobayashi, K., Matsumoto, Y., Kubota, S. & Kato, S., 1995 Sep 1, In : IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'95). p. 1262-1266

Research output: Contribution to journalArticle

High-Quality Frame-Synchronization for Satellite Video Signal Transmission

Kubota, S., Morikura, M. & Kato, S., 1995 Jan, In : IEEE Transactions on Aerospace and Electronic Systems. 31, 1, p. 430-435 6 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

High-quality signal transmission techniques for personal communication systems - novel coherent demodulation and ADPCM voice transmission with click noise processing-

Kobayshi, K., Sakata, T., Matsumoto, Y., Enomoto, K., Kubota, S. & Kato, S., 1995 Jan 1, In : IEEE Vehicular Technology Conference. 2, p. 733-737 5 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)

Phase ambiguity resolver for PCM sound broadcasting satellite service with low power consumption viterbi decoder employing SST scheme

Seki, K., Kubota, S. & Kato, S., 1995 Sep 1, In : IEICE Transactions on Communications. E78-B, 9, p. 1269-1277 9 p.

Research output: Contribution to journalArticle

QPSK carrier and bit-timing simultaneous recovery scheme for coherent demodulation

Nagura, T., Matsumoto, Y., Kubota, S. & Kato, S., 1995 Jan 1, p. 1636-1640. 5 p.

Research output: Contribution to conferencePaper

Reliable and low power consumption personal terminal architecture for wireless multimedia communications

Kawazoe, K., Sugimura, Y., Kubota, S. & Kato, S., 1995 Dec 1, p. 1362-1366. 5 p.

Research output: Contribution to conferencePaper

Reliable channel control method for wireless multimedia communications

Sugimura, Y., Kawazoe, K. & Kubota, S., 1995 Dec 1, p. 476-480. 5 p.

Research output: Contribution to conferencePaper

Soft-Decision Viterbi Decoding with Diversity Combining for Multi-Beam Mobile Satellite Communication Systems

Sakai, T., Kubota, S., Kato, S., Kobayashi, K. & Morikura, M., 1995 Feb, In : IEEE Journal on Selected Areas in Communications. 13, 2, p. 285-290 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Technologies for compact and low power consumption personal handy-phone system terminals

Kubota, S., Enomoto, K., Kawazoe, K., Sakata, T. & Kobayashi, K., 1995 Dec 1, In : NTT R and D. 44, 9, p. 775-780 6 p.

Research output: Contribution to journalArticle

Voice transmission quality improvement scheme for personal communication systems - Super Mute scheme

Suzuki, M. & Kubota, S., 1995 Dec 1, p. 713-717. 5 p.

Research output: Contribution to conferencePaper

1994

A High-Quality and Low Power Consumption Modem LSIC for Personal Handy Phone System

Mizoguchi, M., Matsumoto, Y., Sakata, T., Kubota, S. & Kato, S., 1994 Nov 1, In : International Workshop on Multi-Dimensional Mobile Communications (MDMC'94). p. 39-42

Research output: Contribution to journalArticle

A low power demodulator LSIC for personal communications: High performance coherent detection demodulator

Matsumoto, Y., Kubota, S. & Kato, S., 1994 Jan 1, Wireless Networks - Catching the Mobile Future: 5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994 - Proceedings. Arnbak, J. C., Prasad, R. & Weber, J. H. (eds.). Institute of Electrical and Electronics Engineers Inc., p. 476-480 5 p. 529135. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A Very Low Power and High-Quality Signal Transmission Baseband LSIC for Personal Communications -Advanced Signal Processing and One-chip Integration-

Kato, S., Kubota, S., Seki, K., Enomoto, K., Kawazoe, K., Sakata, T., Kobayashi, K. & Matsumoto, Y., 1994 Dec 1, In : IEEE International Conference on Global Communications (Globecom'94).

Research output: Contribution to journalArticle

A Very Low Power Consumption ADPCM Voice Codec LSIC for Personal Communication Systems

Enomoto, K., Dobashi, A., Suzuki, M., Hasumi, T., Seki, K., Kubota, S. & Kato, S., 1994 Sep 1, In : IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'94). p. 481-485

Research output: Contribution to journalArticle

1 Citation (Scopus)

Double side information concatenated coding scheme for fading environments -experimental evaluation employing SNUFEC VLSI-

Kawazoe, K., Suzuki, M., Kubota, S. & Kato, S., 1994 Jan 1, Conference Record - International Conference on Communications. Publ by IEEE, p. 1576-1580 5 p. (Conference Record - International Conference on Communications; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

New burst coherent demodulator for microcellular TDMA/TDD systems

Matsumoto, Y., Kubota, S. & Kato, S., 1994 Jul 1, In : IEICE Transactions on Communications. E77-B, 7, p. 927-933 7 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

New fully-digitalized π/4-shift QPSK modulator for personal communication terminals

Sakata, T., Seki, K., Kubota, S. & Kato, S., 1994 Jul 1, In : IEICE Transactions on Communications. E77-B, 7, p. 921-926 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Pe Performance of Half Chip Offset QPSK Modulation CDMA Scheme for Wireless LAN Systems

Sugiyama:, T., Mizoguchi, M., Kubota, S. & Kato, S., 1994 Sep 1, In : IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'94). p. 761-765

Research output: Contribution to journalArticle

1 Citation (Scopus)
1 Citation (Scopus)

Ultra-high-speed and Universal-coding-rate Viterbi Decoder VLSIC -SNUFEC VLSI-

Kawazoe, K., Honda, S., Kubota, S. & Kato, S., 1994 Dec 1, In : IEICE Transaction on Electronics.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Ultra-high-speed and universal-coding-rate Viterbi decoder VLSIC - SNUFEC VLSI

Kawazoe, K., Honda, S., Kubota, S. & Kato, S., 1994 Dec 1, In : IEICE Transactions on Electronics. E77-C, 12, p. 1888-1894 7 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Very Low Power Consumption Viterbi Decoder LSIC Employing SST Scheme for Multimedia Mobile Communications

Seki, K., Kubota, S., Mizoguchi, M. & Kato, S., 1994 Apr 1, In : IEE Electronics letters.

Research output: Contribution to journalArticle

Very low power consumption Viterbi decoder LSlC employing the SST (scarce state transition) scheme for multimedia mobile communications

Seki, K., Kubota, S., Mizoguchi, M. & Kato, S., 1994 Jan 1, In : Electronics Letters. 30, 8, p. 637-639 3 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

VLSI Implemented 60Mb/s QPSK/OQPSK Burst Digital Demodulator for Radio Application

Matsumoto, Y., Kobayashi, K., Sakata, T., Seki, K., Kubota, S. & Kato, S., 1994 Dec 1, In : IEICE Transaction on Electronics.

Research output: Contribution to journalArticle

VLSI implemented 60 Mb/s QPSK/OQPSK burst digital demodulator for radio application

Matsumoto, Y., Kobayashi, K., Sakata, T., Seki, K., Kubota, S. & Kato, S., 1994 Dec 1, In : IEICE Transactions on Electronics. E77-C, 12, p. 1873-1880 8 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

VLSI-implemented high speed digital burst modem applications for satellite video TDMA and wireless LAN

Matsumoto, Y., Kobayashi, K., Sakata, T., Seki, K., Kubota, S. & Kato, S., 1994 Jan 1, Conference Record - International Conference on Communications. Publ by IEEE, p. 1472-1477 6 p. (Conference Record - International Conference on Communications; vol. 3).

Research output: Chapter in Book/Report/Conference proceedingConference contribution