交织类型盲识别方法  

Blind Recognition of Interleaving Style

作　　者：李徐 陆文博 

机构地区：[1]解放军92038部队

出　　处：《电子信息对抗技术》2016年第4期6-10,37,共6页Electronic Information Warfare Technology

摘　　要：交织技术在抵御信道衰落引起的突发错误方面发挥着重要作用,在通信系统中得到了广泛应用,使得交织盲识别成为信道编码识别的重要内容。针对非合作情况下的交织类型盲识别问题,提出一种基于序列码重特性分布的识别方法。该方法通过分析分组交织序列和卷积交织序列的码重分布特性,利用两种序列的实际码重分布概率与二项分布概率之间的欧几里德距离作为特征参数来识别序列的交织类型。仿真结果表明该方法能在较高误码率下实现交织序列类型的盲识别。Interleaving technology is widely used in digital communication system. It plays an important role in avoiding burst errors, therefore blind recognition of interleaving plays an important role in the field of blind channel coding recognition. A method for blind recognition of the interleaving style in non-cooperative context is proposed. The code weight distributions of block interleaving sequence and convolutional interleaving sequence are exploited, and the sequence＇ s interleaving style is estimated by the Euclidean distance between the two style of sequence＇ s real code weight distribution probability and binomial code weight distribution probability. The simu- lation results show that the proposed algorithm can provide a good performance in a bad environ- ment.

关 键 词：分组交织 卷积交织 码重分布 盲识别 

分 类 号：TN971.1[电子电信—信号与信息处理]