Improved decoding for a concatenated coding system recommended by CCSDS

Author

Paaske, Erik

Author_Institution

Inst. of Circuit Theory & Telecommun., Tech. Univ. of Denmark, Lyngby, Denmark

Volume

38

Issue

8

fYear

1990

fDate

8/1/1990 12:00:00 AM

Firstpage

1138

Lastpage

1144

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

Keywords

decoding; error correction codes; CCSDS; Consultative Committee for Space Data Systems; Reed-Solomon code; Viterbi decoding; block interleaver; concatenated coding system; deinterleaver; exchange of information; inner rate 1/2 convolutional code; repeated decoding trials; Channel coding; Concatenated codes; Convolutional codes; Data systems; Decoding; Helium; Interleaved codes; Reed-Solomon codes; Telemetry; Viterbi algorithm;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.58746

Filename

58746