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2002•Unpublished venueRequires access

Soft output Viterbi algorithm (SOVA) for non-binary turbo codes

Jun Tan, G.L. Stüber

Open publisher page 3 citations

Abstract

An optimal MAP-equivalent SOVA decoding algorithm and its simplified suboptimal algorithm for non-binary codes are proposed. The implementation of its suboptimal algorithm is simpler, while its performance is very close to the optimal Log-MAP algorithm. The proposed SOVA can be used as a decoder for turbo trellis coded modulation (TTCM). It is concluded that the proposed SOVA performs very close to the Log-MAP algorithm for both the TTCM and binary turbo codes, and its performance is better than the conventional SOVA.

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What this paper is about

An optimal MAP-equivalent SOVA decoding algorithm and its simplified suboptimal algorithm for non-binary codes are proposed. The implementation of its suboptimal algorithm is simpler, while its performance is very close to the optimal Log-MAP algorithm. The proposed SOVA can be used as a decoder for turbo trellis coded modulation (TTCM). It is concluded that the proposed SOVA performs very close to the Log-MAP algorithm for both the TTCM and binary turbo codes, and its performance is better than the conventional SOVA.

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OpenAlex reports 3 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

An optimal MAP-equivalent SOVA decoding algorithm and its simplified suboptimal algorithm for non-binary codes are proposed. The implementation of its suboptimal algorithm is simpler, while its performance is very close to the optimal Log-MAP algorithm. The proposed SOVA can be used as a decoder for turbo trellis coded modulation (TTCM). It is concluded that the proposed SOVA performs very close to the Log-MAP algorithm for both the TTCM and binary turbo codes, and its performance is better than the conventional SOVA.

Key concepts: Soft output Viterbi algorithm, Turbo code, Computer science, Viterbi algorithm, Iterative Viterbi decoding, BCJR algorithm, Algorithm, Turbo equalizer

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