Matlab-file-operations-command

svd和nmf的对比，在时间和效果对比，各个算法的特点(svd VS nmf)

采用点门限玻尔兹曼机实现对图像的自动特征提取以及特征选择。(Point-wise gated boltzmann machine was adopted to realize automatic feature extraction and feature selection of images.)

以Griewank函数为测试对象,应用PSO算法优化求解(Use Griewank function for test object, apply PSO algorithm as the optimal solution )

homography matrix of 2 images

this file give another type of generation of quadrature amplitude modulation

此算法是基于matlab的MFCC特征提取算法，其中包括了分帧、归一化等步骤和代码，非常好用，结果是24维的向量(This algorithm is based on MFCC feature extraction algorithm matlab, including the framing, normalization and other steps and code, very easy to use, the result is 24-dimensional vector)

This is a program of a diversity transmission system based on superposition modulation

用MATLAB语言描述的关于QPSK的无线通信系统仿真应用，如何产生QPSK信号(MATLAB language to describe the use of QPSK wireless communication system simulation applications, how to generate QPSK signal)

跳时超宽带信号的功率谱密度，正弦信号调制的模拟PPM信号。(UWB signal power spectral density, sinusoidal analog signal modulation PPM signal.)

This function takes the n time domain samples (real or complex) and finds the psd by taking (fft/n)^2. The two sided spectrum is produced by shifting the psd The array freq provides the appropriate frequency values for plotting purposes. By taking 10*log10(psd/max(psd)) the psd is normalized values beow 60db are set equal to -60db