基于游程特征的线性分组码与卷积码类型识别

Blind Identifying of Type of Linear Block Code and Convolutional Code Based on Run Feature

针对线性分组码与卷积码的类型识别问题,本文提出了一种基于游程特征的信道编码类型识别方法。论文从理论上分析了两种编码游程特性存在的差异,即卷积码的游程具有较好的随机性而线性码游程的随机性较差,并且线性码在信息位长度附近的游程数会发生一定的畸变。通过提取编码的游程特征,算法实现了对这两种编码类型的识别。仿真结果验证了所提识别方法的有效性和鲁棒性,表明算法具有一定的工程应用前景。

Aiming at solving the problem of recognition for the type of linear block code and the convolutional code,a method of the channel coding type recognition based on the run feature is proposed.Namely,the difference of the run feature of the linear block code and convolutional code is analyzed in theory.It shows that the randomness of the convolutional code run feature is superior to that of the linear block code,and the linear block code run number around the information bit length has a certain amount of distortion.Therefore,the code type can be identified by abstracting the run feature of these two codes.Simulation results show that the proposed method has high robustness and accurate recognition,and the method has a certain value in future engineering application.