基于错误图样的Viterbi译码性能分析  

Analysis of Viterbi Decoding Performance on Error Pattern

作　　者：郝天铎 王可人[1] 金虎[1] 熊最[1] 

机构地区：[1]电子工程学院,合肥230037

出　　处：《火力与指挥控制》2015年第10期83-86,共4页Fire Control & Command Control

摘　　要：针对卷积码的Viterbi译码性能在"比特级"层面的研究还不够深入,提出了一种利用错误图样分布来研究其译码性能的方法。该方法在不加调制的情况下,通过设定不同错误图样的参数,详细分析了不同错误图样下的译码性能。同时,给出了一种错误图样搜索算法,可搜索出对译码性能影响最明显的错误图样分布。在此基础上又对几种典型错误图样分布下的纠错性能进行了对比分析。仿真结果表明,错误图样的不同分布会对Viterbi译码性能产生不同的影响。In order to get further studies of the decoding performance for concatenated RS-convolutional codes on ＂bits＂level,a method which using the error pattern distribution to analyze the decoding performance is proposed. The influence of error pattern distribution is analyzed on the decoding performance by setting parameters without modulation. Also the search algorithm which can find a error pattern distribution that letting the performance become most sensitive is given. Then the error correction performance in several typical error pattern distribution is discussed. Results show that different error pattern distribution have different influence on the Viterbi decoding performance.

关 键 词：卷积码 VITERBI译码 错误图样 

分 类 号：TN911.22[电子电信—通信与信息系统]