Fec

source code using principal component analysis and similirity matching with the ecludien distance this is an approach used for face recognition. this file also contains and test images

首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)

pca程序，PCA可以用于图像处理等方面(pca procedure)

matlab 精通一书源代码，包含各个重点章节偶(proficient in a book matlab source code, including various chapters focus even)

The additional argument (PeakD) is roughly the ratio of the typical peak width to the length of the entire data record. Small values detect fewer peaks larger values detect more peaks. It effects only the starting values for the peak detection parameters. (This is just a quick way to set reasonable initial values of the peak detection parameters, rather than specifying each one individually as in example 5.

光伏的数学通用模型。 工程用途，我参考搭建的模型 可以使用。(Universal mathematical model of PV. Engineering purposes)

matlab svm的gui操控界面，绝对可用！！！能够实现分类预测等强大的功能，可以根据自身需求设置各种参数！(GUI control interface matlab SVM, absolutely available!!! To achieve functional classification prediction, powerful, you can set various parameters according to their own needs!)

方程求解的差值方法的源代码，matlab编写的，值得收藏，欢迎大家踊跃下载，为中国的科研事业做贡献(The difference equation method of source code, matlab prepared and worthy of collection, enthusiastically welcomed the U.S. download, in order to make China' s contribution to the cause of scientific research)

说明：  基于dds的函数发生器和基于matlab的扫雷游戏(Dds-based function generator and the mine-based game matlab)

Matlab环境下的基于平滑宽带信号的编程(Matlab environment based on the smooth programming of broadband signals)