TCM-PPM联合时钟同步并行译码算法研究  

Research on TCM-PPM Joint Clock Synchronization Parallel Decoding Algorithm

作　　者：马春波[1] 盛均峰 敖珺[1] 唐德刚 MA Chunbo;SHENG Junfeng;AO Jun;TANG Degang(School of Information and communication,Guilin University Of Electronic Technology,Guilin 541004)

机构地区：[1]桂林电子科技大学信息与通信学院,桂林541004

出　　处：《舰船电子工程》2018年第10期81-83,115,共4页Ship Electronic Engineering

基　　金：国家自然科学基金课题(编号:61167006)资助

摘　　要：针对M-PPM信号脉冲稀疏,难以提取时钟同步信息的缺点,提出一种基于并行处理的维特比(Viterbi)联合时钟同步的简化译码算法。该算法基于并行处理的思想,能够成倍地减少译码时延,简化运算复杂度,并且利用判决反馈抵消并行处理过程中的分支度量损失。分析与仿真结果表明,对于TCM-PPM联合时钟同步并行译码方案在保证系统性能的同时,可以有效减少由于数据存储器的访问次数而带来的时延消耗。Aiming at the shortcoming of M-PPM signal pulse sparse and difficult to extract clock synchronization information,this paper proposes a simplified decoding algorithm based on parallel processing Viterbi joint clock synchronization. The algorithmis based on the idea of parallel processing,which can reduce the decoding delay by several times,simplify the computational com-plexity,and use the decision feedback to offset the branch metric loss in parallel processing. The analysis and simulation resultsshow that the TCM-PPM joint clock synchronization parallel decoding scheme can effectively reduce the time delay consumptiondue to the access times of the data memory while ensuring the system performance.

关 键 词：TCM-PPM VITERBI 并行运算 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]