偏置自纠错最小和译码算法  

Bias Self-correcting Minimum Sum Algorithm

作　　者：周志伟 孙发鱼[1] 白瑞青[1] ZHOU Zhiwei;SUN Fayu;BAI Ruiqing(Xi'an Institute of Electromechanical Information Tehnology, Xi’an 710065, China)

机构地区：[1]西安机电信息技术研究所,陕西西安710065

出　　处：《探测与控制学报》2021年第2期76-80,共5页Journal of Detection & Control

摘　　要：针对置信传播算法运算复杂度较高以及最小和译码算法性能不佳的问题,提出了偏置自纠错最小和译码算法。该算法采用LDPC信道编码技术,通过添加偏置系数以及改变变量节点的更新过程,弥补了最小和译码近似运算过程中带来的损失,同时删除了变量更新中的不可靠信息,提高了译码性能。仿真结果表明,该算法相比于置信传播算法,其复杂度降低,拥有较小的时延,并且性能优于最小和算法,易于硬件实现,具有一定的研究和应用价值。In order to solve the problem of high operational complexity and poor performance of the minimum and decoding algorithms,a bias self-correcting minimum sum algorithm was proposed in this paper.This algorithm adopted LDPC channel coding technology,and by adding bias coefficient and changing the update process of variable node,which made up for the loss in the process of minimum sum algorithm operation,and removed the unreliable information in the update of variable,thus improving the decoding performance.Simulation results showed that the decoding complexity of this algorithm was significantly lower than that of BP algorithm,and it was more suitable for hardware implementation.

关 键 词：弹载遥测 LDPC 误码率 信道编码 

分 类 号：TN919.3[电子电信—通信与信息系统]