基于码重分布与汉明距离的线性码盲识别方法  

Linear Code Blind Identification Method Based on Code Weight Distribution and Hamming Distance

作　　者：李歆昊[1,2] 张旻[1,2] 

机构地区：[1]解放军电子工程学院,安徽合肥230037 [2]安徽省电子制约技术重点实验室,安徽合肥230037

出　　处：《探测与控制学报》2013年第4期68-73,共6页Journal of Detection & Control

基　　金：国家自然科学基金项目资助(60972161)

摘　　要：针对信道编码盲识别需要一定的先验知识,无法实现全盲识别的问题,提出了一种联合码重分布与汉明距离的盲识别方法,解决在高误码率情况下的二进制线性分组码的盲识别问题。首先,该方法利用码重分布准确获取码长,同时粗判断出码字起点;然后,在粗判断出的码字起点基础上进一步利用汉明距离的方法实现码字起点的准确判断,进而获得生成矩阵,实现码字的盲识别。理论分析及仿真实验表明,该方法能满足一定的误码率要求,具有一定的工程应用前景。The channel coding blind identification requires a certain amount of prior knowledge, and can not re- alize total blind identification. A joint weight distribution blind identification method was proposed to solve the problem of high error rate and the Hamming distance of binary linear block code. Firstly, the method used weight distribution accurately obtain the code length, while crudely judged code word starting point; then, on the basis of the crudely judged starting point, the accurately codeword starting point was determined by use of the Hamming distance, thus the blind identification generation matrix was obtained. Theoretical analysis and simulation experiments showed that the method could meet the requirements of a certain error rate, and had a certain engineering application prospects.

关 键 词：数字通信 信道编码 线性分组码 码重分布 汉明距离 盲估计 

分 类 号：TN911.22[电子电信—通信与信息系统]