Title :
GAC-based trellis decoding of block codes in Rayleigh fading channel
Author :
Yuan, Dongfeng ; Gao, Chunyan ; Zhang, Lijun
Author_Institution :
Dept. of Electron. Eng., Shandong Univ., Jinan, China
Abstract :
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 -5
Keywords :
Rayleigh channels; block codes; channel coding; decoding; error statistics; BER; GAC-based trellis decoding; Rayleigh fading channel; block codes; coding gain; generalized array codes; hard-decision decoding; nonalgebraic decoding method; simulation results; soft decision; soft-decision decoding; trellis structure; Bit error rate; Block codes; Communication systems; Decoding; Fading; Matrix decomposition; Parity check codes; Product codes; Product design; Testing;
Conference_Titel :
Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6596-8
DOI :
10.1109/WCNC.2000.904846
