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现代通信系统使用MATLAB一书中第二章，书的作者是刘树堂(Modern communication systems using MATLAB, a book chapter, book the author is LIU Shu-tang)

光伏逆变器的simulink仿真程序，仿真没有问题,很有用的资料(Photovoltaic inverter Simulink simulation program, the simulation is no problem, very useful information )

分别使用PSO和GA优化BP神经网络的参数，用于非线性函数拟合(PSO and GA are used to optimize the parameters of the BP neural network for nonlinear function fitting)

Depth of field calculator based on 2D digital image correlation data , Depth of field calculator based on 2D digital image correlation data

说明：  动态矩阵控制MATLAB源程序，是基于阶跃响应的模型预测控制(Dynamic Matrix Control MATLAB source code is based on the step response of model predictive control)

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING PERFORMANCE CALCULATION OF BER MEASUREMENT..

求出多个信号的FFT频率并显示谱图，同时求出多个信号的功率谱并显示谱图(The FFT frequency of multiple signal and display the spectrum diagram, at the same time, the power spectrum of multiple signal and display spectrogram )

Solution of Laplace equation in an semi-circle region by FEM method

matlab 学习技巧，现在把我用的，也就是对我帮助很大的留个文件传上去，希望对大家有用，第四工程数学应用(matlab learning skills, and now I use, which is a great help to me to leave a document passed up, we want to be useful, the fourth application of engineering mathematics)

周期高斯一介导、高斯二介导即高斯脉冲（即UWB信号）的功率谱图像，对应不同的占空比和不同的脉冲形式，随着阶数的增加中心频率右移，频谱也为高斯形式，且随着周期数增多，呈现线谱形式(Cycle Gaussian ordinary derivative, ie the Gaussian two-mediated Gaussian pulse (the UWB signal) of the power spectrum image, corresponding to different pulse duty cycle and a different form, with the increase of the order of the center frequency shifted to the right, the spectrum also Gaussian form, and with the number of cycles increased, showing the form of line spectrum)