中文说明：很实用的ldpc编译码，译码采用概率域BP译码。。。包括校验矩阵的构造，编码。调制解调，根据不同的参数可以构造不同大小的校验矩阵进行译码。调制方式为CPM。包括不同参数下的仿真代码，如不同信噪比，不同译码方式，不同校验矩阵的构造方式等等，。
English Description：
Very practical LDPC decoding, probability domain BP decoding using decoding ... Including the construction of parity-check matrix encoding. Modulation and demodulation, depending on the parameter parity-check matrix decoding of various sizes can be constructed. Modulation for the CPM.Including under different parameters of the simulation codes, such as Snr, different decoding methods, different ways of construction of parity-check matrix, and so on.