Cooperative optimization and Their Application in LDPC Codes

摘要：

Cooperative optimization is a new way for finding global optima of complicated functions of many variables. The proposed algorithm is a class of message passing algorithms and has solid theory foundations. It can achieve good coding gains over the sum-product algorithm for LDPC codes. For (6561, 4096) LDPC codes, the proposed algorithm can achieve 2.0 dB gains over the sum-product algorithm at BER of 4×10-7. The decoding complexity of the proposed algorithm is lower than the sum-product algorithm can do; furthermore, the former can achieve much lower error floor than the latter can do after the/Eb No is higher than 1.8 dB.

关键词： LDPC codes cooperative optimization iterative decoding the sum-product algorithm

作者: Ke chen Jian Rong Xiaochun Zhong

作者单位: School of Physical Electronic , UESTC, Chengdu, Sichuan ,610054,China Department of Applied Physics, Southwest Jiaotong UniversitySichuan ,610031, China

会议类型: 国际会议

会议名称: 第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology

会议地点: 沈阳

会议语种:英文

页码: 1-6

在线出版日期: 2008-09-15（万方平台首次上网日期，不代表论文的发表时间）