Presentation 2002/3/12
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,
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Abstract(in English) In this paper, we present a new soft-decision iterative decoding algorithm using an efficient minimum distance search (MDS) algorithm. The proposed MDS algorithm is a top-down and recursive MDS algorithm, which finds a most likely codeword among the codewords at the minimum distance of the code from a given codeword. A search is made in each divided section by a "call by need" from the upper section. As a consequence, the search space and computational complexity are reduced significantly. The simulation results show that the proposed decoding algorithm achieves near error performance to the maximum likelihood decoding for any RM code of length 128 and suboptimal for the (256, 37), (256, 93) and (256, 163) RM codes.
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Keyword(in English) minimum distance search / recursive maximum likelihood decoding / minimum weight codewords / Reed-Muller code / iterative decoding
Paper # ITS2001-131
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Committee ITS
Conference Date 2002/3/12(1days)
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Registration To Intelligent Transport Systems Technology (ITS)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Soft-Decision Iterative Decoding Algorithm Using a Top-Down and Recursive Minimum Distance Search
Sub Title (in English)
Keyword(1) minimum distance search
Keyword(2) recursive maximum likelihood decoding
Keyword(3) minimum weight codewords
Keyword(4) Reed-Muller code
Keyword(5) iterative decoding
1st Author's Name Jun Asatani
1st Author's Affiliation Graduate School of Information Sciences, Hiroshima City University()
2nd Author's Name Kenichi Tomita
2nd Author's Affiliation Dept. of Information Processing and Management, Shiga University
3rd Author's Name Takuya Koumoto
3rd Author's Affiliation Graduate School of Information Sciences, Hiroshima City University
4th Author's Name Toyoo Takata
4th Author's Affiliation Faculty of Software and Information Science, Iwate Prefectural University
5th Author's Name Tadao Kasami
5th Author's Affiliation Graduate School of Information Sciences, Hiroshima City University
Date 2002/3/12
Paper # ITS2001-131
Volume (vol) vol.101
Number (no) 732
Page pp.pp.-
#Pages 6
Date of Issue