timeanalysis

求N个字符的不重复排列数，不是标准的递归写法，供求职时笔试参考。(Seek N-character array of non-repetition number, not an ordinary recursive formulation for the job when the written reference.)

说明：  matlab 从入门到精通，很好的文档，珍藏多年(matlab From Novice to Professional, well documented, the collection for many years)

AG+NN: génétic algorithm

3gpp信道模型matlab仿真有m文件源码 方便学习3g信道相关(3gpp channel model has m file matlab simulation source code to facilitate learning 3g channel correlation)

将信号分为不同频带，计算峭度值，选择峭度值最大的频带解调分析(divide The signal into different frequency bands, calculate kurtosis value, the maximum kurtosis band demodulation)

用matlab编写的自适应遗传算法，交叉概率和变异概率能够自动随适应度而改变，因此能够提供相对某个最优解的最佳交叉概率和变异概率(Using matlab adaptive genetic algorithm, the crossover and mutation probability with the fitness change, and therefore able to provide relatively a optimal solution best crossover probability and mutation probability)

《Simulink电子通信仿真与应用》，通信专业的好书，详细介绍在MATLAB的SIMULINK环境下如何进行建模仿真(Simulink simulation and application of electronic communications, communications professional books, detailing the circumstances in MATLAB-SIMULINK model and simulate how)

刘凤君老师的书，现代逆变技术及应用，主要讲解了拓扑结构，调制机理，控制机理以及实例分析。(Liu Fengjun teacher' s book and modern inverter technology applications, mainly on the topology, modulation mechanism, control mechanism as well as instances of analysis.)

说明：  matlab对轨道角动量的仿真，可以更改波长和模态值以适应光学和电磁应用(Matlab simulation of orbit angular momentum can change the wavelength and mode value to adapt to optical and electromagnetic applications)

利用MATLAB GUI设计实现图像处理的图形用户界面，利用MATLAB图像处理工具箱实现以下的图像处理功能： 1. 采用matlab Guide设计实现图像界面与按钮界面。 2. 连接摄像头，编写MATLAB初始化程序 3. 用摄像头采集一副图像，并能实现保存（使用控件按钮保存）。 4. 设计按钮实现对图像进行任意的亮度和对比度变化调整，显示和对比度变化前后的图像。 5. 设计按钮实现用户能够用鼠标选取图像感兴趣区域，显示和保存该选择区域。 (Designed and implemented using MATLAB GUI graphical user interface, image processing, using MATLAB image processing toolbox of image processing functions to achieve the following: 1. Designed to achieve an image using matlab Guide button interface with the interface. 2 Connect the camera to write MATLAB initialization procedure 3, with the camera capture an image and save to achieve (using the control button to save). 4 Design button on the image to achieve any change in the brightness and contrast adjustment, display, and contrast changes before and after images. 5 button design to achieve the user to select an image region of interest with the mouse, display and save the selected area.)