LDPC码的编译码程序，用的是LU分解算法，和BP译码算法，在Matlab上调试通过-LDPC encoder and decoder

LDPC低密度奇偶校验码的随机构造编码方法，以及BP译码算法。-LDPC codes encoding and decoding process.

Low-Density Parity-Check (LDPC) codes have gained lots of popularity due to their capacity achieving/approaching property. This work studies the iterative decoding also known as message-passing algorithms applied to LDPC codes. Belief propagation