Tadashi WADAYAMA


On Zero Error Capacity of Nearest Neighbor Error Channels with Multilevel Alphabet
Takafumi NAKANO Tadashi WADAYAMA 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2647-2653
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Channel Coding
Keyword: 
zero error capacityflash memoryperfect Lee codes
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Construction of Fixed Rate Non-Binary WOM Codes Based on Integer Programming
Yoju FUJINO Tadashi WADAYAMA 
Publication:   
Publication Date: 2017/12/01
Vol. E100-A  No. 12  pp. 2654-2661
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory for Strage
Keyword: 
WOM codesflash memoriesinter-cell interferenceconstraint coding
 Summary | Full Text:PDF(676KB)

Index ARQ Protocol for Reliable Contents Distribution over Broadcast Channels
Takahiro OSHIMA Tadashi WADAYAMA 
Publication:   
Publication Date: 2017/03/01
Vol. E100-A  No. 3  pp. 832-838
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
ARQindex codescontents distributionbroadcast channels
 Summary | Full Text:PDF(531.9KB)

Band Splitting Permutations for Spatially Coupled LDPC Codes Achieving Asymptotically Optimal Burst Erasure Immunity
Hiroki MORI Tadashi WADAYAMA 
Publication:   
Publication Date: 2017/02/01
Vol. E100-A  No. 2  pp. 663-669
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
spatially coupled LDPC codesburst erasurestopping setsbelief propagation
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Bitwise MAP Estimation for Group Testing Based on Holographic Transformation
Tadashi WADAYAMA Taisuke IZUMI Kazushi MIMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2147-2154
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory and Techniques
Keyword: 
group testingholographic transformationnormal factor graph
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Probabilistic Analysis of the Network Reliability Problem on Random Graph Ensembles
Akiyuki YANO Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2218-2225
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Networks and Network Coding
Keyword: 
random graphnetwork reliabilityconnectivityLDGM codes
 Summary | Full Text:PDF(356.1KB)

Performance Analysis Based on Density Evolution on Fault Erasure Belief Propagation Decoder
Hiroki MORI Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/12/01
Vol. E99-A  No. 12  pp. 2155-2161
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory and Techniques
Keyword: 
LDPC codesBP decoderfaultdensity evolution
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Probabilistic Analysis on Minimum s-t Cut Capacity of Random Graphs with Specified Degree Distribution
Yuki FUJII Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2317-2324
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
minimum cutrandom graphsLDGM code
 Summary | Full Text:PDF(572.9KB)

Finite Length Analysis on Listing Failure Probability of Invertible Bloom Lookup Tables
Daichi YUGAWA Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/12/01
Vol. E97-A  No. 12  pp. 2309-2316
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
data structurehash functionstopping set
 Summary | Full Text:PDF(971.6KB)

FOREWORD
Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/12/01
Vol. E96-A  No. 12  pp. 2323-2323
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
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An Iterative Decoding Algorithm for Channels with Additive Linear Dynamical Noise
Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2452-2460
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
iterative decoding algorithmKalman smootherlinear dynamical systemLDPC codes
 Summary | Full Text:PDF(355.2KB)

An Algorithm for Augmenting a Binary Linear Code up to Gilbert Bound and New Codes Obtained by the Algorithm
Tadashi WADAYAMA Hiroyuki KADOKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2196-2202
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
binary linear codeaugmentationsyndrome trellisGilbert bound
 Summary | Full Text:PDF(387.7KB)

An Extension of Gallager Ensemble of Low Density Parity Check Codes
Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/05/01
Vol. E85-A  No. 5  pp. 1161-1171
Type of Manuscript:  PAPER
Category: Coding Theory
Keyword: 
LDPC codetypical minimum distance ratiocode ensembleiterative decoding
 Summary | Full Text:PDF(786.8KB)

A Coded Modulation Scheme Based on Low Density Parity Check Codes
Tadashi WADAYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2523-2527
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
LDPC codesum-product algorithmcoded modulation
 Summary | Full Text:PDF(512.4KB)

A Multilevel Construction of Permutation Codes
Tadashi WADAYAMA A. J. Han VINCK 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2518-2522
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
permutation codemultilevel codemultistage decoding
 Summary | Full Text:PDF(167.1KB)

An Upper Bound on Frame Error Rate for Generalized Concatenated Convolutional Codes
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/06/25
Vol. E82-A  No. 6  pp. 1126-1130
Type of Manuscript:  LETTER
Category: Information Theory and Coding Theory
Keyword: 
generalized concatenated codeconvolutional codeframe error rateiterative decoding
 Summary | Full Text:PDF(173.3KB)

A Method for Evaluating Minimum Free Chernov Distance of Trellis-Codes for Discrete Memoryless Channel
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/25
Vol. E81-A  No. 10  pp. 1972-1978
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
Chernov distancediscrete memoryless channeltrellis-codeminimum free distance
 Summary | Full Text:PDF(541.8KB)

An Upper Bound on Bit Error Rate for Concatenated Convolutional Code
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/25
Vol. E80-A  No. 11  pp. 2123-2129
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
concatenated codeconvolutional codeinterleaveReed-Solomon codeburst correction
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A Class of Trellis-Codes for Partial Response Channel
Tadashi WADAYAMA Atsushi NAGAO Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/02/25
Vol. E80-A  No. 2  pp. 386-392
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
trellis codepartial-response channnel
 Summary | Full Text:PDF(481KB)

Matched Design Method for Concatenated Trellis-Coded Modulation
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/11/25
Vol. E79-A  No. 11  pp. 1911-1917
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
trellis-coded modulationconcatenated codeweight distribution
 Summary | Full Text:PDF(573.7KB)

High Rate Binary Coset Code Used for Inner Code
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/09/25
Vol. E78-A  No. 9  pp. 1071-1076
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
concatenated codecoset codeconvolutional codeweight distribution
 Summary | Full Text:PDF(469.1KB)

Multi-Dimensional Block Shaping
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/08/25
Vol. E78-A  No. 8  pp. 1034-1041
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
shapingcoded modulationMAW-code
 Summary | Full Text:PDF(603.9KB)

An 8-Dimensional Trellis-Coded 8-PSK with Non-zero Crossing Constraint
Tadashi WADAYAMA Koichiro WAKASUGI Masao KASAHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/08/25
Vol. E77-A  No. 8  pp. 1274-1280
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: 
Keyword: 
TCMπ/4-shift QPSKset partitioning,non-zero crossing
 Summary | Full Text:PDF(555.6KB)