LDPC码在各种衰落信道中性能分析.pdf

30 3 Vol.30,No.3 2010 6 Journal of Gui lin University of El ectron ic Technology Jun. 2010 LDPC 1 1, 2 1 尹芳 , 滕 舟 , 仇洪冰 ( 1. 桂林电子科技大学 信息与通信学院, 广西 桂林 541004; 　 2. 浙江省气象信息网络中 , 浙江 杭州310017) : , LDPC , () LDPC ,M AT LAB , LDPC ,AWGN LDPC ,,LDPC , : LDPC; ; ; ; BP ; LL : 911. 22: : 1673-808 (2010) 03-0193-05 TN A X Perf ormance of LDPC codes i n f ading channel s 1 1,2 1 Yin Fang Teng Zhou, , Qiu Hongbing (1.School of Information and Communication Engineering Guilin University of Electronic Technology Guilin, , 541004, China; 2. Zhejiang Meteorological Information Network Center,Hangzhou 310017,China) : . Abstract The performance of channel is depended on the channel s characteristics T he wireless mobile channels characteristic is multipath transmittal. Multipath transmittal causes small-scale fading, or fading in short. Nowadays, the most attention about LDPC codes is paid on the application in the channels of BSCAWGN and ayleigh T his paper analyzes and simulates the performance of the low density parity check codes in fading. channels, the ayleigh channels and ice channels for example, and makes the compare with the AWGN. The important idea is to analyze the performance of the low density parity check codes in ice channel of small ice K- factor a