OFDM_4qam

说明：  对机械振动信号用三维能量谱进行分析。。。。。。。。。。。(Mechanical vibration signals of three-dimensional power spectrum analysis. . . . . . . . . . .)

说明：  利用在box-muller 和在时域上通过低通滤波器的方法产生多普勒频移的瑞利信道(Using the box-muller, and in the time domain through a low pass filter method produces Doppler frequency shift of the Rayleigh channel)

OFDM的QPSK调制与解调,有说明，有需要的朋友可以看看(OFDM QPSK modulation and demodulation, a note, a friend in need can look)

多方向灰度变换源代码（本子程序为单方向，多方向修改一下即可）(Multi-directional gray transform source code (book program for single-direction, multi-directional modify click))

实现ID3 决策树算法，并使用MATLAB自带的工具箱函数画出决策树生成相应的规则(Achieve ID3 decision tree algorithm, and using MATLAB toolbox function that comes with the decision tree to generate the appropriate rules to draw)

就通信系统而言，涉及到有线信道及非卫星无线信道的问题时，信道不再可以看成为恒参信道，信号往往是通过未知信道传播，通常把这样的信道称为盲信道。 本源代码对盲信道的参数进行估计，利用matlab仿真，对做盲信道的工程人员有一定的借鉴价值。(On communications systems, related to non-cable channels and the issue of satellite radio channel, channel no longer can be seen as a channel Constant reference signal is often spread through unknown channels, usually channel such as the blind channel. Source code for the blind channel estimation of the parameters, the use of matlab simulation, on the blind channel to do the engineering staff from a certain value.)

非常好的M_QAM调制解调程序，具有可视化用户界面，可以查看调制解调过程中每一步的调制图像和频谱(Modem M_QAM very good program, with visual user interface, you can view the modem every step of the process of image and spectrum modulation)

采用小波提取布料图像的纹理，提取出经纬纱的纹理，效果还好。演示用吧(using wavelet to extract Woven Fabrics feature, it alse can automatic analysis techniques to identify the fabric density)

关于定位技术的一个最新的Tdoa方面的matlab代码(Positioning technology an up-to-date the TDOA aspects of matlab code)

无功补偿statcom装置及载波移幅调制主电路仿真示例(Statcom reactive power compensation device and carrier shift amplitude modulation of the main circuit simulation examples)