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IEICE Trans

Shoichiro YAMASAKI

Variable-Length Orthogonal Codes over Finite Fields Realizing Data Multiplexing and Error Correction Coding Simultaneously
Shoichiro YAMASAKI Tomoko K. MATSUSHIMA Kyohei ONO Hirokazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2024/03/01
Vol. E107-A  No. 3  pp. 373-383
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory and Techniques
Keyword: 
variable-length orthogonal codes, Reed-Solomon codes, discrete Fourier transform, finite fields, 
 Summary | Full Text:PDF
Orthogonal Variable Spreading Factor Codes Suppressing Signal-Envelope Fluctuation
Tomoko K. MATSUSHIMA Shoichiro YAMASAKI Hirokazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2023/03/01
Vol. E106-A  No. 3  pp. 445-449
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum Technologies and Applications
Keyword: 
DS-CDMA, complex OVSF codes, polyphase orthogonal codes, signal trajectory, envelope fluctuation, 
 Summary | Full Text:PDF
Orthogonal Variable Spreading Factor Codes over Finite Fields
Shoichiro YAMASAKI Tomoko K. MATSUSHIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2022/01/01
Vol. E105-A  No. 1  pp. 44-52
Type of Manuscript:  PAPER
Category: Communication Theory and Signals
Keyword: 
orthogonal variable spreading factor codes, multi-rate communications, finite fields, discrete Fourier transform, 
 Summary | Full Text:PDF
Signature Codes to Remove Interference Light in Synchronous Optical Code-Division Multiple Access Systems
Tomoko K. MATSUSHIMA Shoichiro YAMASAKI Kyohei ONO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/11/01
Vol. E104-A  No. 11  pp. 1619-1628
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
optical CDMA, generalized modified prime sequence code, p-chip code, chip-pair code, interference cancellation, background light, 
 Summary | Full Text:PDF
Optical CDMA Scheme Using Generalized Modified Prime Sequence Codes and Extended Bi-Orthogonal Codes
Kyohei ONO Shoichiro YAMASAKI Shinichiro MIYAZAKI Tomoko K. MATSUSHIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/09/01
Vol. E104-A  No. 9  pp. 1329-1338
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
optical code division multiple access, generalized modified prime sequence code, extended bi-orthogonal code, multi-user interference, atmospheric propagation, 
 Summary | Full Text:PDF
Complex Orthogonal Variable Spreading Factor Codes Based on Polyphase Sequences
Tomoko K. MATSUSHIMA Shoichiro YAMASAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2020/10/01
Vol. E103-A  No. 10  pp. 1218-1226
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: communication
Keyword: 
DS-CDMA, OVSF codes, complex sequences, polyphase orthogonal codes, 
 Summary | Full Text:PDF
Wireless Packet Communications Protected by Secret Sharing and Vector Coding
Shoichiro YAMASAKI Tomoko K. MATSUSHIMA Shinichiro MIYAZAKI Kotoku OMURA Hirokazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2680-2690
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Theory and Systems
Keyword: 
secret sharing, physical layer security, multi-antenna transmission, vector coding, packet communications, 
 Summary | Full Text:PDF
A Study on Multi-User Interference Cancellers for Synchronous Optical CDMA Systems — Decision Distance and Bit Error Rate —
Tomoko K. MATSUSHIMA Masaki KAKUYAMA Yuya MURATA Yasuaki TERAMACHI Shoichiro YAMASAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2017/10/01
Vol. E100-A  No. 10  pp. 2135-2145
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
optical CDMA, modified prime sequence code (MPSC), multi-user interference (MUI), interference canceller, decision distance, 
 Summary | Full Text:PDF
Performance Improvement of Error-Resilient 3D DWT Video Transmission Using Invertible Codes
Kotoku OMURA Shoichiro YAMASAKI Tomoko K. MATSUSHIMA Hirokazu TANAKA Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2256-2265
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Video Coding
Keyword: 
3D DWT video coding, error-resilient video coding, error concealment, Reed-Solomon codes, 
 Summary | Full Text:PDF
A Security Enhancement Technique for Wireless Communications Using Secret Sharing and Physical Layer Secrecy Transmission
Shoichiro YAMASAKI Tomoko K. MATSUSHIMA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Vol. E99-D  No. 4  pp. 830-838
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Network security
Keyword: 
secret sharing, physical layer security, multi-antenna transmission, Reed-Solomon codes, 
 Summary | Full Text:PDF
Single-Carrier Transmission Using Overlap Frequency Domain Equalizing and Coherent Averaging
Shinichiro MIYAZAKI Shoichiro YAMASAKI Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/11/01
Vol. E94-A  No. 11  pp. 2169-2177
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Theory and Signals
Keyword: 
single-carrier transmission, frequency-domain equalization, multipath channel, 
 Summary | Full Text:PDF
Performance of Adaptive Trellis Coded Modulation Applied to MC-CDMA with Bi-orthogonal Keying
Hirokazu TANAKA Shoichiro YAMASAKI Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/11/01
Vol. E92-A  No. 11  pp. 2837-2843
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Communication Theory and Systems
Keyword: 
multi-carrier CDMA, bi-orthogonal modulation, Reed-Solomon code, adaptive modulation and coding, trellis coded modulation, 
 Summary | Full Text:PDF
Performance of Reed-Solomon Coded MC-DS-CDMA with Bi-orthogonal Modulation
Hirokazu TANAKA Kyung Woon JANG Shoichiro YAMASAKI Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/10/01
Vol. E92-A  No. 10  pp. 2600-2608
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
multi-carrier CDMA, OFDM, bi-orthogonal modulation, Reed-Solomon code, error correction code, 
 Summary | Full Text:PDF
Performance of Pragmatic Trellis Coded ARQ with Cyclical Multicopy Retransmission for High Speed Mobile Satellite Communication System
Hirokazu TANAKA Shoichiro YAMASAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2099-2110
Type of Manuscript:  Special Section PAPER (Special Section on Recent Fundamental Technologies for Broadband Satellite Communications)
Category: 
Keyword: 
hybrid ARQ, trellis coded modulation, mobile satellite system, fading channel, 
 Summary | Full Text:PDF
Performance of Mobile Multimedia System Applied to Trellis Coded Modulation on Rayleigh Fading Channel
Hirokazu TANAKA Shoichiro YAMASAKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/10/25
Vol. E83-A  No. 10  pp. 1996-1999
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Mobile Communication
Keyword: 
trellis coded modulation, reed-solomon code, mobile multimedia, MPEG-4, 
 Summary | Full Text:PDF
Iterative Processing for Improving Decode Quality in Mobile Multimedia Communications
Shoichiro YAMASAKI Hirokazu TANAKA Atsushi ASANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/10/25
Vol. E82-A  No. 10  pp. 2096-2104
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication Systems
Keyword: 
mobile multimedia communications, multimedia multiplexing, turbo decoding, iterative soft-input/soft-output error correction decoding, MPEG4, 
 Summary | Full Text:PDF
Pragmatic Trellis Coded MPSK with Bandwidth Expansion on Rayleigh Fading Channel
Hirokazu TANAKA Shoichiro YAMASAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/12/25
Vol. E81-B  No. 12  pp. 2276-2282
Type of Manuscript:  Special Section PAPER (Special Issue on the Latest Development of Telecommunication Research)
Category: Transmission and Modulation
Keyword: 
Trellis coded modulation, M-ary PSK, bandwidth expansion, punctured code, 
 Summary | Full Text:PDF
A Nonlinear Distortion Compensation on Layered Multicarrier Modulation Using Iterative Restoration
Shoichiro YAMASAKI Hirokazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/25
Vol. E81-A  No. 10  pp. 2109-2116
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum System
Keyword: 
multicarrier modulation, OFDM, nonlinear compensation, iterative signal restoration, 
 Summary | Full Text:PDF
A Corporate Communication Network Design Method Supported by Knowledge-Base
Emi KATO Shoichiro YAMASAKI Hiroshi KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1992/07/25
Vol. E75-B  No. 7  pp. 609-616
Type of Manuscript:  Special Section PAPER (Special Section on Network Planning)
Category: 
Keyword: 
network design, knowledge-base, private network, corporate network, optimization, 
 Summary | Full Text:PDF