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

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

1260

Lastpage

1263

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1311-9

Type

conf

DOI

10.1109/WICOM.2007.321

Filename

4340096