中文说明：程序实现了LDPC码编译码算法的全过程，译码算法有三种，分别为BP算法，LLR-BP 算法，最小和算法，信道为高斯白噪声信道，对初学者有很多帮助
English Description：
Program the whole process of decoding algorithm for LDPC codes and decoding algorithm has three, namely BP algorithm, LLR-BP algorithm for min-sum algorithm, channel for the Gaussian white noise channel, give beginners many help.