Bi-directional SOVA decoding for turbo-codes

J. Chen; M.P.C. Fossorier; Shu Lin; Chao Xu

doi:10.1109/4234.898722

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Bi-directional SOVA decoding for turbo-codes

J. Chen M.P.C. Fossorier Shu Lin Chao Xu

Year: 2000 Journal: IEEE Communications Letters Vol: 4 (12)Pages: 405-407 Publisher: IEEE Communications Society

DOI: 10.1109/4234.898722

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Abstract

In this letter, we present a bi directional SOVA-based decoding scheme for turbo-codes, which combines the soft-outputs provided by both forward and backward SOVA decodings. Importantly, we explain why this bi-directional decoding improves SOVA decoding. The simulation results show that bi-directional SOVA can achieve about the same performance as the Max-Log-MAP algorithm in turbo decoding.

Keywords:

Decoding methods Computer science Turbo code Turbo equalizer Turbo Serial concatenated convolutional codes Algorithm Concatenated error correction code Block code Engineering

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Bi-directional SOVA decoding for turbo-codes

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