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Comments on Simplification of the BCJR Algorithm Using the Bidirectional Viterbi Algorithm
Masato TAJIMA Keiji TAKIDA Zenshiro KAWASAKI
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/10/25
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Theory and Coding Theory
symbol reliability, BCJR algorithm, simplification of the BCJR algorithm, bidirectional Viterbi algorithm,
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In this paper, we state some noteworthy facts in connection with simplification of the BCJR algorithm using the bidirectional Viterbi algorithm (BIVA). That is, we clarify the necessity of metric correction in the case that the BIVA is applied to reliability estimation, where information symbols uj obey non-uniform probability distributions.