Takuya KOUMOTO


Reduced Complexity Iterative Decoding Using a Sub-Optimum Minimum Distance Search
Jun ASATANI Takuya KOUMOTO Kenichi TOMITA Tadao KASAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2596-2600
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
minimum distance searchnear optimality conditionReed-Muller codeiterative decoding
 Summary | Full Text:PDF(558.1KB)

Selection Method of Test Patterns in Soft-Decision Iterative Bounded Distance Decoding Algorithms
Hitoshi TOKUSHIGE Takuya KOUMOTO Marc P.C. FOSSORIER Tadao KASAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/10/01
Vol. E86-A  No. 10  pp. 2445-2451
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
soft-decision decodingiterative decodingalgebraic decodingBCH codecovering code
 Summary | Full Text:PDF(402.9KB)

A Soft-Decision Iterative Decoding Algorithm Using a Top-Down and Recursive Minimum Distance Search
Jun ASATANI Kenichi TOMITA Takuya KOUMOTO Toyoo TAKATA Tadao KASAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/10/01
Vol. E85-A  No. 10  pp. 2220-2228
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
minimum distance searchrecursive maximum likelihood decodingminimum weight codewordsReed-Muller codeiterative decoding
 Summary | Full Text:PDF(671.8KB)

Selection of Search Centers in Iterative Soft-Decision Decoding Algorithms
Hitoshi TOKUSHIGE Kentaro NAKAMAYE Takuya KOUMOTO Yuansheng TANG Tadao KASAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/10/01
Vol. E84-A  No. 10  pp. 2397-2403
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
iterative decodingbounded-distance decodingsoft decision decodingBCH code
 Summary | Full Text:PDF(358.8KB)

An Improvement to GMD-Like Decoding Algorithms
Hitoshi TOKUSHIGE Yuansheng TANG Takuya KOUMOTO Tadao KASAMI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/10/25
Vol. E83-A  No. 10  pp. 1963-1965
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
soft-decision iterative decodingmultiple GMD decodingearly termination conditionsbinary block codes
 Summary | Full Text:PDF(196.1KB)

Sufficient Conditions for Ruling-Out Useless Iterative Steps in a Class of Iterative Decoding Algorithms
Tadao KASAMI Yuansheng TANG Takuya KOUMOTO Toru FUJIWARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/10/25
Vol. E82-A  No. 10  pp. 2061-2073
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
soft-decisioniterative decodingbinary block codesruling-out conditionsearly termination conditions
 Summary | Full Text:PDF(652.3KB)

A Sufficient Condition for Ruling Out Some Useless Test Error Patterns in Iterative Decoding Algorithms
Takuya KOUMOTO Tadao KASAMI Shu LIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/02/25
Vol. E81-A  No. 2  pp. 321-326
Type of Manuscript:  PAPER
Category: Information Theory and Coding Theory
Keyword: 
binary linear codechase algorithmiterative decodingsufficient conditionoptimality test
 Summary | Full Text:PDF(509.9KB)

Low Weight Subtrellises for Binary Linear Block Codes and Their Applications
Tadao KASAMI Takuya KOUMOTO Toru FUJIWARA Hiroshi YAMAMOTO Yoshihisa DESAKI Shu LIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/11/25
Vol. E80-A  No. 11  pp. 2095-2103
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Coding Theory
Keyword: 
subtrellis diagramlow weightbinary linear coderecursive decoding algorithmsubtrellis search
 Summary | Full Text:PDF(751.6KB)