A

计算任意层数平板波导结构。其中slabexec为主程序，readme中有程序使用的详细说明。可以计算任意层数的平板波导结构的有效折射率，光场分布和远场分布(PhotonicCrystals )

给出了分形计算的源代码的matlab程序，可以迅速帮助大家进行分形的分析与计算，参数容易设置 (Gives the fractal calculation matlab source code program that can quickly help you to fractal analysis and calculation of parameters easy to set)

一种变步长的lms算法实现，用MATLAB编写。(A variable step size lms algorithm, using MATLAB write.)

图像的置乱处理，包括了模板置乱法，幻方置乱法和图像的一个基本加密方法——4bit置换(Scrambled images, including the template scrambling method, magic squares and image scrambling method is a basic encryption method- 4bit replacement)

Matlab code for audio coding

根据FSK调制原理 在二进制频移键控中，幅度恒定不变的载波信号的频率随着输入码流的变化而切换（称为高音和低音，代表二进制的1和0）。来做实验 (According to the principle of FSK modulation in the binary frequency shift keying, the frequency of the carrier signal amplitude constant with the change of the input stream is switched (called treble and bass, representing a binary 1 and 0). Trequinsin)

牛顿方法优化算法可以用于多程序源代码内容(In numerical analysis, Newton s method (also known as the Newton–Raphson method), named after Isaac Newton and Joseph Raphson, is a method for finding successively better approximations to the roots (or zeroes) of a real-valued function. The algorithm is first in the class of Householder s methods, succeeded by Halley s method.)

设计了信息在空间传输的莱斯信号模型,当接收端存在一个主要的静态信号时，如LOS分量（如在郊区和农村等开阔区域中）等，此时接收端接收的信号的包络就服从Rician分布。(Rician signal model)

ECHO CANCELLATION SIMULLATION in matlab

说明：  FEA 有限元计算matlab很早以前编制的程序，适应新的matlab环境。(FEA finite element matlab long ago programmed to adapt to the new matlab environment.)