Title :
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
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;
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.2007.186
