基于CCSDS标准的Turbo码译码性能仿真研究  

Performance Simulation and Research of Turbo Code Based on CCSDS Standard

作　　者：冯战[1] 侯孝民[1] 郑海昕[1] 顾祥龙[1] 

机构地区：[1]中国人民解放军装备学院,北京101416

出　　处：《无线电工程》2014年第4期7-9,66,共4页Radio Engineering

摘　　要：Turbo码具有接近香农极限的译码性能。由于这种优异特性,空间数据系统咨询委员会(CCSDS)在1999年就把Turbo码加入了遥测信道编码建议书。介绍了CCSDS标准的Turbo码编码结构和译码原理,研究了影响其性能的各个重要参数,如信息块长度、迭代次数和码率等,通过Matlab软件对不同参数条件下的译码性能进行了仿真,对仿真结果进行了详细分析,给出了深空通信系统中参数选择的建议。Turbo code has a very good performance which is close to the Shannon limit.In 1999,CCSDS（Consultative Committee for Space Data systems） has added Turbo code to the recommendation of Telemetry channel coding due to its excellent properties. This paper introduces the coding structure and decoding principle of Turbo codes of CCSDS standard,and studies important parameters which impact its performance,such as block length,iteration number,bit rate,etc.The decoding performances under different parameter condi-tions are simulated by Matlab software.The proposal for parameter selection in deep-space communication system is given based on anal-ysis on simulation results.

关 键 词：TURBO码 LOG-MAP算法 

分 类 号：TN911[电子电信—通信与信息系统]