Title :
Soft-Decision RS Decoding Algorithm and Its DSP Implementation in DSSS Systems
Author :
Bu Xiang Yuan ; Zhu Pei Pei
Author_Institution :
Dept. of Electr. Eng., Beijing Inst. of Technol., Beijing
Abstract :
A soft-decision Reed-Solomon(RS) decoding algorithm is introduced. Chase algorithm is employed and an improved Chase algorithm is presented. Hard-decision and soft-decision decoding are tested under Additive White Gaussian Noise(AWGN) channel using BPSK. Simulation results show that larger coding gain is obtained by using soft-decision decoding and the tradeoff between error performance and decoding complexity using improved Chase algorithm is provided. Finally, DSP implementation scheme of soft-decision RS decoder in Direct Sequence Spread Spectrum(DSSS) systems is proposed.
Keywords :
AWGN channels; Reed-Solomon codes; digital signal processing chips; phase shift keying; spread spectrum communication; AWGN; BPSK; Chase algorithm; DSP; Reed-Solomon decoding algorithm; additive white gaussian noise channel; direct sequence spread spectrum systems; hard decision decoding; soft decision decoding; Additive white noise; Binary phase shift keying; Decoding; Digital signal processing; Error correction; Gaussian noise; Hamming distance; Reed-Solomon codes; Spread spectrum communication; System testing;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.321
