%0 Journal Article
%T Simplified Iterative Joint Source-Channel Decoding Algorithm<br>迭代结构的信源信道联合解码及其简化算法
%A Zhou Lin Wu Zhen-yang
%A <br>周琳
%A 吴镇扬
%J 电子与信息学报
%D 2009
%I 
%X The iterative channel decoder of joint source-channel decode has the transform of log-likelihood and probability, also the multiplication and accumulation operation, which improves the computation complexity of channel decoder. In order to reduce the complexity, this paper proposes the simplified iterative channel decoding algorithm. The algorithm directly utilizes the hard decided value of channel decoder and parameter prior probability to estimate the extrinsic information for iterative channel decoder. Based on Gaussian-Markov source, simulation results show that the simplified iterative channel decoder significantly improves SNR of received parameters and reduces the computation compared with separation source channel decoder. Also, the simplified algorithm does not degrade the performance of joint source channel decoding algorithm obviously.
%K Joint source-channel decoding
%K Iterative channel decoder
%K Simplified algorithm<br>信源信道联合解码
%K 迭代信道解码
%K 简化算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=DEF8667B53E61D48079F8055536B6BB3&yid=DE12191FBD62783C&vid=4AD960B5AD2D111A&iid=F3090AE9B60B7ED1&sid=40A990D28C8AD2F3&eid=E9A7A8D3BBC7E2A3&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=11