An Improved Decoding Method for LDPC Codes in SC-FDE System

Author

Qi Ying-hao ; Huang Pei-wei ; Rong Meng-tian

Author_Institution

Dept. of Electron. Eng., Shanghai Jiaotong Univ., Shanghai

fYear

2007

fDate

21-25 Sept. 2007

Firstpage

718

Lastpage

721

Abstract

Single carrier transmission with cyclic prefix (SC-CP or SC-FDE), has been adopted in wireless applications as an alternative technique to orthogonal frequency division multiplexing (OFDM). In this paper, an improved decoding method for regular low density parity check (LDPC) codes is proposed to compensate for the loss in signal-to-noise (SNR) due to the CP insertion. According to our research, the algorithm to select suitable CP plays an important role in decoding. The performance of the uncoded case is well analyzed. Simulation results show that the proposed scheme is effective under both AWGN and Rayleigh fading channels.

Keywords

OFDM modulation; decoding; parity check codes; wireless channels; AWGN; LDPC codes; OFDM; Rayleigh fading channels; SC-FDE system; cyclic prefix; decoding method; low density parity check; orthogonal frequency division multiplexing; signal-to-noise ratio; single carrier transmission; wireless applications; AWGN; Decoding; Diversity reception; Fading; Interference; OFDM; Parity check codes; Peak to average power ratio; Performance analysis; Power system modeling;

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.2007.186

Filename

4339961