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Reliability-based soft-decision decoding with iterative information set reduction

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1 Author(s)
Fossorier, M.P.C. ; Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA

The reliability-based decoding approach using the reprocessing of the most reliable information set only is extended into the iterative reprocessing of several information sets. At the end of each information set reprocessing, some information bits are delivered by the decoder. Consequently, information sets with decreasing cardinality values are considered at each iteration. A tight upper bound on the error performance achieved by this new method is derived. Compared to previously proposed competitive approaches, this new method reduces the number of candidate codewords needed to achieve practically optimum decoding. Importantly, it also preserves the very simple structured implementation of the order statistic decoding.

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Information Theory, IEEE Transactions on  (Volume:48 ,  Issue: 12 )