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本文提出了一种改进的LDPC码的比特反转解码算法。该算法考虑了如下两个方面的影响:校验错误的方程中所含有的比特数目对各个比特的错误概率的影响,以及校验错误的方程中,所含有的那些比特各自所参与的校验错误的方程数目对各个比特的错误概率的影响。该解码算法不需要软信息即可进行解码,其解码复杂度较低。仿真结果表明,本文提出的改进算法比原来的比特反转算法有较大的性能提高,并且对于大girth的LDPC码,该解码算法的性能甚至优于多种利用软信息的比特反转算法。
This paper presents an improved bit-reverse decoding algorithm for LDPC codes. The algorithm takes into account the effects of the following two aspects: the effect of the number of bits contained in the check-error equation on the error probability of each bit, and the checks involved in each of those bits contained in the equation of error-checking Effect of Wrong Number of Equations on the Error Probability of Each Bit. The decoding algorithm does not need soft information to decode, decoding complexity is low. The simulation results show that the improved algorithm proposed in this paper has a larger performance improvement than the original bit-reversed algorithm, and the performance of this decoding algorithm is superior to many bit-reversed algorithms that use soft information for large girth LDPC codes.