针对信道编码的盲识别问题,提出了码率为(n-1)/n卷积码的盲识别算法.首先建立了盲识别的数学模型,然后对截获码序列所构造的矩阵进行分解求解校验矩阵,通过对校验矩阵进行初等变换,最终辨识编码参数.仿真实验表明,该算法可对卷积码进行有效识别. Aiming at blind identification of channel coding, a blind identification algorithm with (n-1) / n convolutional code rate is proposed. First, a mathematical model of blind identification is established and then the matrix constructed by the intercepted sequence is decomposed and solved The matrix is ​​tested, and the coding parameters are finally identified by performing elementary transformation on the parity check matrix.Experimental results show that the proposed algorithm can effectively recognize convolutional codes.