OFDM_SNR(QPSK)

设定循环检测次数，这里设为只循环一次 tip_l=1 设定hough变换的遍历步径 xl=30 ％设定线段起始点 xr=60 ％设定线段终止点(Set the number of cycle detection, here is set to cycle only once tip_l = 1 set hough transform Path traversal step xl = 30 set line segment starting point xr = 60 set line segment termination point)

说明：   这是一个完整的指纹识别程序，它包括了直方图均衡，Gabor滤波图像增强，方向图过滤，纹理细化，特征提取及特征匹配。其中，特征匹配包含了3种匹配方法，另外还附有PPT，非常值得研究。(Finger Identification)

采用matlab编程实现基于牛顿拉夫逊算法的电力系统潮流计算(Using matlab programming algorithm based on Newton Raphson Power Flow Calculation)

说明：  a method towards Genetic Algorithm

说明：  能够实现模型预测功率控制，提高直接功率控制的稳态以及动态性能(It can realize model predictive power control and improve the steady-state and dynamic performance of direct power control)

基于混沌掩盖技术，讲超混沌反同步系统应用到密保通信中(Based on chaotic masking technology, ultra-speaking anti-synchronization of chaotic systems is applied to the secret security communication)

LDPC编解码的源程序，可以在MATLAB中成功运行(LDPC codec source code, you can successfully run in MATLAB)

说明：  基于simulink 的ofdm仿真，一个完整的系统。用于信道估计仿真。(The ofdm simulink-based simulation, a complete system. Channel estimation for the simulation.)

轮轨接触点扫描方法，用扫描的方法计算求得任意轮轨型面的轮轨接触点(Wheel-rail contact point scanning method, the method of calculation obtained by scanning any type of wheel and rail wheel-rail contact point surface)

In this document has been introduced how to solve different partial differential equations in Matlab programming language.Everbody can solve Heat Conduction Equation, Helmholtz Equation, Laplace Equation and Wave Equation for different initial and boundary conditions. This document is elemantary of to understand how to solve partial differential equations with the aid of a porgramming language.