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提出了一种新的基于稀疏生成矩阵的高性能非正规LDPC码的构造方法,并研究了其性能。与传统的由校验矩阵定义的LDPC码相比,在相同的译码复杂度前提下,非正规LDPC码的编码复杂度更低。模拟结果显示,在加性高斯白噪声信道下,非正规LDPC码的性能要显著优于传统LDPC码。
A new construction method of high-performance non-formal LDPC codes based on sparse generator matrix is proposed and its performance is studied. Compared with the traditional LDPC codes defined by parity check matrix, the encoding complexity of informal LDPC codes is lower under the same decoding complexity. Simulation results show that the performance of the informal LDPC codes is significantly better than the traditional LDPC codes in additive white Gaussian noise channels.