GAC-based trellis decoding of block codes in Rayleigh fading channel

A new nonalgebraic decoding method based on generalized array codes (GAC) structure for a Rayleigh fading channel is studied. The trellis structure of the decoding method makes it easy to add soft decision. 2-level and 8-level quantification are considered respectively in decoding a (7, 4, 3) code,...

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Bibliographic Details
Published in2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540) Vol. 3; pp. 1449 - 1452 vol.3
Main Authors Dongfeng Yuan, Chunyan Gao, Lijun Zhang
Format Conference Proceeding
LanguageEnglish
Published IEEE 2000
Subjects
Bit error rate
Block codes
Communication systems
Decoding
Fading
Matrix decomposition
Parity check codes
Product codes
Product design
Testing
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Summary:A new nonalgebraic decoding method based on generalized array codes (GAC) structure for a Rayleigh fading channel is studied. The trellis structure of the decoding method makes it easy to add soft decision. 2-level and 8-level quantification are considered respectively in decoding a (7, 4, 3) code, a (15, 5, 7) code, a (15, 9, 4) code and a (30, 19, 4) code. Simulation results show that the decoding strategy adapts to the Rayleigh fading channel successfully, especially for soft-decision decoding. Soft-decision decoding can achieve up to 6 dB more coding gain than hard-decision decoding when the BER is around 10/sup -5/.
ISBN:9780780365964
0780365968
ISSN:1525-3511
1558-2612
DOI:10.1109/WCNC.2000.904846