计算机工程与应用2012，Vol.48Issue(8)：152-154,3.DOI:10.3778/j.issn.1002-8331.2012.08.043
改进的基于因子图Turbo均衡的外信息反馈机制
Modified extrinsic information feedback mechanism based on FG-turbo equalization
摘要
Abstract
This paper uses the factor graph and sum-product algorithm to discuss the turbo equalization principle, compares the performances of FG-turbo equalization algorithm in the sparse and non-sparse channels, and proposes a new FG-turbo equalization extrinsic information feedback mechanism in the non-sparse channel. Simulation results show that in sparse channel, the performance of the FG-turbo equalization is very close to the performance of the MAP-turbo equalization after several iterations, and the improvement of the modified extrinsic information feedback mechanism makes FG-turbo equalization obtain better performance gain.关键词
因子图/和积算法/turbo均衡/外信息反馈机制Key words
factor graph/ sum-product algorithm/ turbo equalization/ extrinsic information feedback mechanism分类
信息技术与安全科学引用本文复制引用
王忠勇,吕素,段琳琳,张传宗..改进的基于因子图Turbo均衡的外信息反馈机制[J].计算机工程与应用,2012,48(8):152-154,3.基金项目
河南省教育厅自然科学基金(No.2007510019) （No.2007510019）
