xhdemo

常用的数字PAM信号波形及其功率谱的仿真，包含源码和一份实验报告，有详细的分析。(Commonly used in digital PAM signal waveforms and power spectrum of the simulation, including source code and a test report, detailed analysis.)

激光光学里的光束通过透镜后光斑，及其能量分布(Laser optics in the beam spot through the lens, and its energy distribution)

the following file is a matlab program done for thesis based on acoustic echo cancellation using LMS algorithm.

Turbo Encoder using RSC encoder with interleaver

过程控制工程，非线性环节处理Matlab-Simulink仿真代码，内含多种情况讨论！(Process control engineering, nonlinear aspects of treatment of Matlab-Simulink simulation code contains a variety of discussion!)

MemDC防止屏幕闪烁的好方法，如不使用内存DC在画图，显示时会闪烁。(memdc redraw dc)

MATLAB function to initialize and call the solve_sps2d function, which implements a 2-D solution of the nonlinear wave equation using a psuedospectral / staggered A-B method, including attenuation modeled with two relaxation mechanisms. This example demonstrates harmonic generation within a plane wave given a B/A parameter of 5.2. To increase the distance of propagation, scale the sample grid (num_axpts) by a factor(s) of 2.( MATLAB function to initialize and call the solve_sps2d function, which implements a 2-D solution of the nonlinear wave equation using a psuedospectral /staggered A-B method, including attenuation modeled with two relaxation mechanisms. This example demonstrates harmonic generation within a plane wave given a B/A parameter of 5.2. To increase the distance of propagation, scale the sample grid (num_axpts) by a factor(s) of 2.)

这个是４ＱＡＭ调制的ＯＦＤＭ完整的程序， 大家可以下了看看，希望对你有用！(OFDM modulation integrity of the process, we can see where the hope that useful to you!)

说明：  编写程序：基类base，有一个私有数据成员n，派生类Derived公有继承基类base，Derived中新增加一个数据成员m(Programming: the base class base, there is a private data member n, the derived class Derived inherits the base class public base, Derived add a new data member m)

可以打开图片的界面，并能完成图片的梯度计算和显示(open picture)