查找ldpc校验矩阵中的6环，并将其记录到txt文件中-Find ldpc check matrix of the six rings, and its records to a txt file

文件中给出了可用的LDPC编码，译码程序。并且有生成生成矩阵与校验矩阵的程序。-File give the available LDPC encoding, decoding process. And there is a generator matrix and parity check matrix generation program.