MATLAB-and-Excel

包括脚本文件和函数文件形式，包括调制，解调，信噪比计算，针对EMD方法的不足。( Including script files and function files in the form, Includes the modulation, demodulation, signal to noise ratio calculation, For lack of EMD.)

设计了一个扩频 系统，具有扩频解扩的功能。系统中采用的是瑞利衰落的信道。仿真的结果很好，系统的误码率很小(Designed a spread-spectrum system with spread spectrum despreading function. System is used in the Rayleigh fading channel. Good simulation results, the system bit error rate of the small)

matlab simulink for beginners

This it the code to describe rayleigh distribution

This book is an introduction to two subjects:Matlaband numerical computing. This first chapter introducesMatlabby presenting several programs that inves- tigate elementary, but interesting, mathematical problems. If you already have some experience programming in another language, we hope that you can see how Matlabworks by simply studying these programs.

说明：  产生30行16列的矩阵，每一行代表一路信号，产生32路信号，对32路信号解复用(Produce a matrix of 30 rows 16 columns, each row represents one signal, resulting in 32 signals, the signal demultiplexing 32)

仿真5P和TPY互感器输出饱和电流特性，可以仿真电流拖尾现象。参数可以调整，仿真各种互感器特性的输出电流波形。(Simulation of 5P and TPY transformer output saturation current characteristics, can simulate the current tailing phenomenon. Parameters can be adjusted to simulate the output current waveform of various transformer characteristics.)

说明：  本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)

使用遗传算法和蚁群算法求解TSP问题，并且 实时地将计算结果和所用时间等信息显示在界面上，很直观。(The use of genetic algorithms and ant colony algorithm for TSP problem, and real-time results and the use of the time information is displayed in the interface is very intuitive.)

how to use signal processing toolbox