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qpsk调制程序，通过仿真，用matlab编写的(qpsk modulation process, through simulation, written with matlab)

此文件包含有四个基于matlab源程序,可直接运行.其说明如下 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值P0308：图像的自适应魏纳滤波 (This file contains four based on the matlab source code can be directly run. Its description is as follows P0305: analog image by Gaussian white noise and salt and pepper noise P0306: A two-dimensional median filtering function medfilt2 by salt and pepper noise to the image filter P0307: the use of MATLAB in filter2 function affected by noise interference images mean P0308: Image Adaptive Weiner Filter)

题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？(Title: There are 1,2,3,4 digits, how many can be formed from each other and without duplication of the three-digit numbers? How many are?)

说明：  通信原理系统仿真系列--ASK的调制。供刚接触到matlab编程的朋友使用。(communications system simulation series-- ASK modulation. For Matlab programming begin to use a friend.)

this is good code source for the main task in antenna study that is the optimization

说明：  对距离麦克风1000的圆弧上的声源进行定位，并实现精度图像显示。(The sound source on the arc of the microphone 1000 is located and the accurate image display is realized.)

ls算法，在matlab环境下编写而成，有助于对matlab和ls算法的理解。(ls algorithm)

这几本是关于Matlab开的书籍，对于初学者很适用(Several open books on Matlab, it is suitable for beginners)

floyd算法，运用与优化的问题处理，具有高效性和精确性(Problem floyd algorithm, the use and optimization, with high efficiency and accuracy)

FSK调制方式所产生的信号画出时域频域波形程序(The FSK mode signal the draw time domain to the frequency domain waveform program)