一种改进的LDPC码译码算法  

An Improved Decoding Algorithm for LDPC Codes

作　　者：刘健余[1] 曾丽珍[1] 刘洋[1] 曹治政[1] 

机构地区：[1]桂林电子科技大学研究生学院,广西桂林541004

出　　处：《信阳师范学院学报（自然科学版）》2012年第4期543-546,共4页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：广西区研究生教育创新计划项目(2011105950810M13)

摘　　要：基于最小和译码算法,提出了一种改进算法,即在最小和译码算法的后期迭代中,采用尝试强制翻转最不可靠的比特位组的方法来提高译码性能.仿真结果表明,改进后的算法在信噪比1.4～2.2 dB时相对于改进前有0.3 dB的性能提高.An improved algorithm which based on min-sum decoding algorithm was proposed. The method of trying to flip the most unreliable bits during the later stage of iterative process was employed to improve decoding performance. Simulation results showed that the improved decoding algorithm brings 0.3 dB performance improvement compared with the rain-sum algorithm when the SNR is 1.4 - 2.2 dB.

关 键 词：最小和算法 LDPC码 改进算法 

分 类 号：TN919[电子电信—通信与信息系统]