%0 Journal Article
%T Design and Optimization of Degree Distributions of Irregular LDPC<br>非规则LDPC度分布优化设计
%A Li Er-bao
%A Lei Jing
%A Xu Fu-bing
%A <br>李二保
%A 雷菁
%A 徐富兵
%J 电子与信息学报
%D 2008
%I 
%X Good degree distributions can improve the error-floor and reduce the complication in encoding and decoding of LDPC. Under AWGN channel, Gaussian approximation algorithm can analyze the decoding threshold of LDPC presented by their degree distributions. Using differential evolution, the degree distributions that possess maximal threshold can be gotten. Through simulation results, the optimized degree distributions which possess a 0.15dB better noisy threshold than using linear algorithm.
%K LDPC<br>差分进化
%K 高斯近似
%K 门限值
%K 度分布
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=B59EC99C18F33DB2B76CE2B58E8180BD&yid=67289AFF6305E306&vid=340AC2BF8E7AB4FD&iid=708DD6B15D2464E8&sid=8AEA017E33EDAB49&eid=B92DA4008CEC559E&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=2&reference_num=8