FDTD3d_UPML

function [ret,x0,str,ts,xts]=s4(t,x,u,flag) s4 is the M-file description of the SIMULINK system named s4. The block-diagram can be displayed by typing: s4. SYS=s4(T,X,U,FLAG) returns depending on FLAG certain system values given time point, T, current state vector, X, and input vector, U. FLAG is used to indicate the type of output to be returned in SYS.

精通matlab6.5,向读者提供色彩信息、动态交互的软件环境，提供读者实践本书内容所需的各种文件。(Is proficient matlab6.5, to provide color information to the reader, dynamic interactive software environment, providing the reader practice the book the various documents required.)

Gaussian Filter Matlab Code

数字水印系统的实现——基于DCT的鲁棒水印。图像中数字水印的嵌入，分块DCT反变换(Image digital DCT)

Spread-spectrum telecommunications This is a technique in which a telecommunication signal is transmitted

聚类分析的案例，用maltab方法实现，修改可以使用(Cluster analysis of cases with maltab method, can be used to modify)

本程序用于对干涉条纹进行滤波，二值化，骨骼化，最后为求得条纹间距而得到一个像素宽度的图像(This procedure is used to filter the interference fringe, thresholding, skeletonization, and finally to obtain the fringe spacing and width of the image by one pixel)

mqam demodultion code with fc,fs,fd,M and ini_phase parameter

利用有限差分法，通过matlab编程求解偏微分方程（扩散方程）有限差分法 源程序代码(Using the finite difference method, solve (diffusion equation) finite difference method by partial differential equations matlab program source code)

matlab code for tsp with GA