%0 Journal Article
%T Research on Performance of LDPC Coded BICM Schemes Using Pre-decision Message<br>采用预判决信息的LDPC码编码调制方案性能研究
%A Zhang Hai-gang
%A Li Chang-chun
%A Ma Pi-ming
%A Yuan Dong-feng
%A <br>张海刚
%A 李长春
%A 马丕明
%A 袁东风
%J 电子与信息学报
%D 2005
%I 
%X Low-Density Parity Check(LDPC) coded Bit-Interleaved Coded Modulation (BICM) schemes are analyzed in this paper. The schemes using decoding method without iteration between demodulator and decoder are first simulated. Then a novel method using pre-hard-decision message is proposed. And the performance over Additive White Gaussian Noise (AWGN) and Rayleigh fading channels is analyzed. The decoding complexity is also considered. The new method proves that the conventional bit-metrics generation method is not optimal. Through the simulation results there is conclusion that the proposed schemes have better performance than the scheme without pre-decision message both over AWGN and Rayleigh fading channels with nearly same complexity.
%K LDPC
%K BICM
%K Coded modulation
%K Rayleigh fading channel<br>低密度奇偶校验
%K 比特交织编码调制
%K 编码调制
%K Rayleigh衰落信道
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=84C11F21E616EC8D&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=E158A972A605785F&sid=4ECB3941871FD391&eid=F9A6B6F259CE5121&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=1&reference_num=5