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A Survivor-Correction Viterbi Algorithm
Hiroshi KUBO Atsushi IWASE Makoto MIYAKE
IEICE TRANSACTIONS on Communications
Publication Date: 2000/06/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
adaptive equalizers, Viterbi detection, maximum-likelihood detection, iterative method,
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This paper proposes a survivor-correction Viterbi algorithm (SCVA) and presents its application to an iterative sequence estimation in order to improve bit error rate performance of decision-feedback sequence estimation (DFSE) in the presence of intersymbol interference. The SCVA can mitigate erroneous survivor selections due to DFSE, because it modifies the add-compare-select operation to an add-correct-compare-select operation. Finally, it is confirmed by computer simulation that complexity of the proposed scheme is independent of delay of the main delayed ray and its performance is superior to that of DFSE at the same number of states.