LDPC码的和积算法，码长可以任意，输出多项式即可，译码输出软信息-Sum-product algorithm for LDPC codes, code length can be arbitrary, the output polynomials can be, decoder outputs soft information

用C++编程的低密度奇偶校验码的和积算法，用于LDPC的译码算法-In C++ programming, low-density parity check codes and product algorithm for LDPC decoding algorithm

有效的LDPC解码算法，详细介绍了LDPC码，并且有仿真结果-Efficient Implementations of the Sum-Product Algorithm for Decoding LDPC Codes