主要给出准循环的LDPC码编码实现方法，译码方法选择，并给出了帧同步的解决方法-Give the main quasi-cyclic LDPC codes achieve coding method, decoding method of selection, and give the frame synchronization solution

用Matlab语言构造多元准循环LDPC码，并通过信道进行仿真。-Matlab language used multivariate quasi-cyclic LDPC codes constructed and simulated through the channel.