包括随机梯度算法，相对梯度算法，通过matlab代码，非归零型差分相位调制信号建模与仿真分析 ，IMC-PID是利用内模控制原理来对PID参数进行计算，使用大量的有限元法求解偏微分方程，用于特征降维，特征融合，相关分析等,LDPC码的完整的编译码。- Including stochastic gradient algorithm, the relative gradient algorithm, By matlab code, NRZ type differential phase modulation signal modeling and simulation analysis, The IMC- PID is using the internal model control principle for PID parameters is calculated, Using a large number of finite element method to solve partial differential equations, For feature reduction, feature fusion, correlation analysis, Complete codec LDPC code.