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You all might have used CTime or CTimeSpan to manipulate the system timer. Here is an article to show you how your system timer works. I will give you an idea of port communications behind the system clock manipulations. Those who are a little biased on hardware and software interfacing practices would find this article of great help.

routine to take the Fourier transform of a signal and plot both the time and frequency domain representations. Typical use: >> n = 100 number of data points >> dt = 0.01 spacing between samples >> t = 0:dt:(n-1)*dt time vector >> y = sin(2*pi*10*t) 10 Hz sin wave >> fft_plot(y,dt) plot of signal in time and frequency domain

说明：  MATLAB示例代码 从2004年11月起，《MATLAB及在电子信息课程中的应用》的下载程序dsk01改为dsk02。两者只有微小的差别。主要的修改是： 1． 所有的生成图形都由灰色改成白色，以便与书籍上的图相同。 2． 删去了几个无用的程序； 3． 加了了几个程序（如q48a和q48b），以便和书上的章节演示内容相符。(MATLAB sample code from November 2004 onwards, "MATLAB and electronic information in the curriculum of" download dsk01 dsk02 changed. Taken only a very small difference. The major changes are : 1. All graphics generating replaced by gray and white, with the books to the same map. 2. By deleting a few useless procedures; 3. The increase in the number of procedures (such as q48a and q48b), and to book chapters on the demonstration line content.)

二次插值MATLAB实现源码，调试成功。希望对大伙有所帮助。(MATLAB implementation of quadratic interpolation source code, debugging success. Want to help everyone.)

基于OFDM的盲信道估计与信号识别的算法，很基本的内容，特别是盲信道估计(Blind channel estimation based on the OFDM signal recognition algorithm, the basic content, especially blind channel estimation)

说明：  qpsk matlab

hough变换，matlab编程。Hough变换是一种使用表决原理的参数估计技术。其原理是利用图像空间和Hough参数空间的点－线对偶性，把图像空间中的检测问题转换到参数空间。通过在参数空间里进行简单的累加统计，然后在Hough参数空间寻找累加器峰值的方法检测直线。(hough transform, matlab programming. Hough transform is a vote on the principle of using a parameter estimation techniques. The principle is the point of the image space using the Hough parameter space and line- duality converting the detection problem in the image space to the parameter space. By a simple statistical accumulated in the parameter space, and then in the Hough parameter space to find a method of detecting the peak accumulator line.)

MWMP是一个运行MATLAB下面的多小波软件包，它是目前功能比较全面的一个多小波软件包，能够用于科学研究例如图像压缩、信号降噪等。它提供了一些比较常见的单小波与多小波滤波器，也提供了多小波的一些常用的预滤波算法，并且，只要修改coef.m文件，就可增加新的滤波器组，同时，修改文件coef_prep.m文件，可增加新的预滤波方法。(MWMP is the following one to run MATLAB package of multi-wavelet, which is currently the more comprehensive package of more than one wavelet can be used for scientific research such as image compression, signal noise reduction. It provides some of the more common single-wavelet and multiwavelet filters, also provides some of the commonly used multi-wavelet pre-filtering algorithm, and, as long as the changes coef.m file, you can add a new filter at the same time, modify the file coef_prep.m file, increase the new pre-filtering method.)

用matlab实现了基于而阶累积量的music算法测角,非常基本,注释详细,欢迎使用(matlab music )

codes matlab for mimo-ofdm