LDPC码的完整的编译码，是信号处理的基础，使用高阶累积量对MPSK信号进行调制识别，包含位置式PID算法、积分分离式PID，利用自然梯度算法，在matlab环境中自动识别连通区域的大小,到达过程是的泊松过程。- Complete codec LDPC code, Is the basis of the signal processing, Using high-order cumulants of MPSK signal modulation recognition, It contains positional PID algorithm, integral separate PID, Use of natural gradient algorithm, Automatic identification in the matlab environment the size of the connected area, Arrival process is a Poisson process.