3-5循环移位码是LDPC码准循环码中一种典型的构造校验矩阵的方法，较小的（155 64）码通常也是对比测试其他码的性能好坏的重要测试标准，程序详细描述了构造的步骤和方法，结果是采用AList的结果存储方法，译码性能可以由BP迭代译码直接得出-3-5 cyclic shift LDPC codes are quasi-cyclic codes in the code structure of a typical calibration matrix method, the smaller (15

CMMB中的LDPC编码及解码功能的实现，解码算法为BP算法。-CMMB in the LDPC encoding and decoding implementations, decoding algorithm is BP algorithm.

将粒子群算法融入ldpc译码过程，实现译码性能的优化，采用c++实现。-The particle swarm into the ldpc decoding process, optimize decoding performance, using c++ implementation.

ldpc码的比特反转译码算法利用C语言实现，虽然简单但比较完整(The bit inversion decoding algorithm of LDPC code is implemented in C language, which is simple but complete.)