针对高误码率情况下删除卷积码的盲解码问题,提出了一种删除卷积码的盲解码算法.通过采用改进的沃尔什-哈达马变换(Walsh-Hadamard translate,WHT),识别出删除卷积码的高维校验矩阵;再基于源卷积码的生成矩阵与校验矩阵间的约束关系,求出了源卷积码的最佳生成多项式和删除模式,并提出了码字同步的方法,最终按识别出来的参数构建盲解码模型,实现了删除卷积码的盲解码.仿真结果表明,在误码率低于0.01,的情况下,该算法的译码正确率能达到93%.%In order to solve the problem of blind decoding punctured convolutional codes at high bit-error rates, this paper proposed a blind decoding algorithm. Through applying the advanced Walsh-Hadamard transform, recognized the high dimensionality parity-check matrix of punctured convolutional codes. Moreover, solved the generator matrix and puncture map of the source convolutional codes based on the constraint relationship between the parity-check matrix and the generator matrix. Then proposed a method of codeword synchronization. According to the recognition results, established a model of blind decoding of punctured convolutional codes. The simulation results show, the bit correct rate after decoding of this algorithm can be up to 93% under the condition of BER lower than 0.01.
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