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IEICE TRANSACTIONS on Fundamentals

Fast Algorithm for Generating Candidate Codewords in Reliability-Based Maximum Likelihood Decoding

Hideki YAGI, Toshiyasu MATSUSHIMA, Shigeichi HIRASAWA

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Summary :

We consider the reliability-based heuristic search methods for maximum likelihood decoding, which generate test error patterns (or, equivalently, candidate codewords) according to their heuristic values. Some studies have proposed methods for reducing the space complexity of these algorithms, which is crucially large for long block codes at medium to low signal to noise ratios of the channel. In this paper, we propose a new method for reducing the time complexity of generating candidate codewords by storing some already generated candidate codewords. Simulation results show that the increase of memory size is small.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.10 pp.2676-2683
Publication Date
2006/10/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e89-a.10.2676
Type of Manuscript
Special Section LETTER (Special Section on Information Theory and Its Applications)
Category
Coding Theory

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