Hirokazu TANAKA


Wireless Packet Communications Protected by Secret Sharing and Vector Coding
Shoichiro YAMASAKI Tomoko K. MATSUSHIMA Shinichiro MIYAZAKI Kotoku OMURA Hirokazu TANAKA 
Publication:   
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 sharingphysical layer securitymulti-antenna transmissionvector codingpacket communications
 Summary | Full Text:PDF(2.1MB)

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 codingerror-resilient video codingerror concealmentReed-Solomon codes
 Summary | Full Text:PDF(4.2MB)

FOREWORD
Hirokazu TANAKA Takao ONOYE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/11/01
Vol. E98-A  No. 11  pp. 2209-2210
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(311.9KB)

Nonlinear Acoustic Echo Suppression Based on Spectrum Selection Using the Amount of Linear Echo Cancellation
Takashi SUDO Hirokazu TANAKA Chika SUGIMOTO Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/11/01
Vol. E97-A  No. 11  pp. 2139-2146
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: 
Keyword: 
echo suppressionnonlinear echospectrum selectionecho-path variation
 Summary | Full Text:PDF(8.8MB)

Multiplexing and Error Control Scheme for Body Area Network Employing IEEE 802.15.6
Kento TAKABAYASHI Hirokazu TANAKA Chika SUGIMOTO Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/03/01
Vol. E97-B  No. 3  pp. 564-570
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication Technology for Medical and Healthcare Applications in Conjunction with Main Topics of ISMICT2013)
Category: 
Keyword: 
IEEE802.15.6QoS controlMultiplexingHybrid ARQDecomposable codeUWB
 Summary | Full Text:PDF(1.5MB)

A Study on Objective Quality Measure for Bandwidth-Extended Speech in Mobile Voice Communications
Takashi SUDO Hirokazu TANAKA Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/03/01
Vol. E97-A  No. 3  pp. 792-799
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
bandwidth-extended speechpseudo MOSPESQspectral-distortion
 Summary | Full Text:PDF(935.5KB)

Performance of Spatial and Temporal Error Concealment Method for 3D DWT Video Coding in Packet Loss Channel
Hirokazu TANAKA Sunmi KIM Takahiro OGAWA Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/11/01
Vol. E95-A  No. 11  pp. 2015-2022
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Image Processing
Keyword: 
3D wavelet video codingerror-resilient video codingstructural similarity indexerror concealment
 Summary | Full Text:PDF(2.3MB)

Error-Resilient 3-D Wavelet Video Coding with Duplicated Lowest Sub-Band Coefficients and Two-Step Error Concealment Method
Sunmi KIM Hirokazu TANAKA Takahiro OGAWA Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/11/01
Vol. E93-A  No. 11  pp. 2173-2183
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: 
Keyword: 
discrete wavelet transform (DWT)dispersive groupingerror resilienceerror concealmentMMSE
 Summary | Full Text:PDF(3.2MB) | (Errata[Uploaded on December 1,2010])

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 CDMAbi-orthogonal modulationReed-Solomon codeadaptive modulation and codingtrellis coded modulation
 Summary | Full Text:PDF(1.5MB)

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 CDMAOFDMbi-orthogonal modulationReed-Solomon codeerror correction code
 Summary | Full Text:PDF(1.7MB)

Kalman Filter-Based Error Concealment for Video Transmission
Shigeki TAKAHASHI Takahiro OGAWA Hirokazu TANAKA Miki HASEYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/03/01
Vol. E92-A  No. 3  pp. 779-787
Type of Manuscript:  Special Section PAPER (Special Section on Latest Advances in Fundamental Theories of Signal Processing)
Category: 
Keyword: 
error concealmentvideo restorationKalman filter
 Summary | Full Text:PDF(781.8KB)

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 ARQtrellis coded modulationmobile satellite systemfading channel
 Summary | Full Text:PDF(1.6MB)

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 modulationreed-solomon codemobile multimediaMPEG-4
 Summary | Full Text:PDF(239.7KB)

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 communicationsmultimedia multiplexingturbo decodingiterative soft-input/soft-output error correction decodingMPEG4
 Summary | Full Text:PDF(1.2MB)

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 modulationM-ary PSKbandwidth expansionpunctured code
 Summary | Full Text:PDF(471.6KB)

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 modulationOFDMnonlinear compensationiterative signal restoration
 Summary | Full Text:PDF(570.2KB)

Performance of Type-I Hybrid Selective-Repeat ARQ with Finite Buffer on Fading Channels
Hirokazu TANAKA Katsumi SAKAKIBARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/01/25
Vol. E80-B  No. 1  pp. 59-66
Type of Manuscript:  Special Section PAPER (Special Issue on Advances in Satellite Communications toward Multimedia Era)
Category: Protocol
Keyword: 
ARQReed-Solomon codefading channelmobile communication
 Summary | Full Text:PDF(564.6KB)

A Performance of Selective-Repeat ARQ with Cyclical Multicopy Retransmission
Hirokazu TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/09/25
Vol. E79-A  No. 9  pp. 1386-1391
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Communication/Spread Spectrum
Keyword: 
selective-repeat ARQfinite buffermulticopy retransmissionmobile satellite communication system
 Summary | Full Text:PDF(428.4KB)

Performance of a Modified Symbol-Rate-Increased TC-2mQAM
Hirokazu TANAKA Tomoto K. MATSUSHIMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/25
Vol. E77-A  No. 8  pp. 1378-1380
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
coded modulationsymbol-rate-increased TCMbandwidth expansion ratiomultilevel modulation
 Summary | Full Text:PDF(220.6KB)