%0 Journal Article
%T Study on Iterative Decoding of Turbo Codes with Extrinsic Information in Different Versions<br>基于不同外信息处理方式的Turbo迭代译码研究
%A Yan Tao
%A Du Xing-min
%A Ru Le
%A <br>闫 涛
%A 杜兴民
%A 茹 乐
%J 电子与信息学报
%D 2005
%I 
%X In this paper, based on various methods of using extrinsic information, two logarithmic iterative decoding algorithms of Turbo codes are anatomized clearly for a discrete memoryless Gaussian channel. With Monte Carlo simulation, performance of two algorithms is compared under the same constraint condition; after analysis it is proposed that they are identical in nature, the only difference is how to deal with scale of extrinsic information for component decoder to use. Finally, a united form is used to describe two algorithms and some research is done for the dependency on extrinsic information in iterative decoding numerically, from the result it is found that SNR and iterative number do not affect the best scale of extrinsic information used in component decoder.
%K Turbo codes
%K Log-MAP decoding algorithm
%K Iterative decoding
%K Extrinsic information<br>Turbo码
%K Log-MAP译码算法
%K 迭代译码
%K 外信息
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=07FA93DCD8A2B3AB&yid=2DD7160C83D0ACED&vid=DB817633AA4F79B9&iid=F3090AE9B60B7ED1&sid=ADEE3E9286A455E3&eid=5B76AAD74B03D886&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=2&reference_num=8