基于分层消息传递机制的低复杂度LDPC译码算法  

Low Complexity LDPC Decoding Algorithm Based on Hierarchical Messaging Mechanism

作　　者：周帆[1] 牛琳琳 田秉禾 ZHOU Fan;NIU Linlin;TIAN Binghe(School of Information Science and Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学信息科学与工程学院,沈阳110159

出　　处：《弹箭与制导学报》2020年第4期110-112,117,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：2018国防基础科研计划项目;辽宁省自然科学基金(20170540775);2019辽宁省教育厅项目(LG201914)资助。

摘　　要：为加快LDPC译码的收敛速度,降低译码算法复杂度,将分层消息传递机制和NMS算法相结合,提出了一种基于分层消息传递机制的低复杂度LDPC译码算法,该算法从根本上改变了NMS算法的传递机制。仿真结果表明,该算法比传统LDPC译码算法收敛速度快,且复杂度较低。In order to accelerate the convergence speed of LDPC decoding and reduce the complexity of decoding algorithm,this paper combines the layered messaging mechanism with the NMS algorithm,and proposes a low-complexity LDPC decoding algorithm based on the layered messaging mechanism,which fundamentally changes the transmission mechanism of NMS algorithm.The simulation results show that the algorithm is faster and less complex than the traditional LDPC decoding algorithm.

关 键 词：LDPC码 收敛速度 低复杂度 NMS算法 

分 类 号：TN911.22[电子电信—通信与信息系统]