Improved decoding for a concatenated coding system

Erik Paaske

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    Abstract

    The concatenated coding system recommended by CCSDS (Consultative Committee for Space Data Systems) uses an outer (255,233) Reed-Solomon (RS) code based on 8-b symbols, followed by the block interleaver and an inner rate 1/2 convolutional code with memory 6. Viterbi decoding is assumed. Two new decoding procedures based on repeated decoding trials and exchange of information between the two decoders and the deinterleaver are proposed. In the first one, where the improvement is 0.3-0.4 dB, only the RS decoder performs repeated trials. In the second one, where the improvement is 0.5-0.6 dB, both decoders perform repeated decoding trials and decoding information is exchanged between them
    Original languageEnglish
    JournalI E E E Transactions on Communications
    Volume38
    Issue number8
    Pages (from-to)1138-1144
    ISSN0090-6778
    DOIs
    Publication statusPublished - 1990

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