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通信系统仿真,matlab下多载波系统分析(communication system simulation)

粒子群优化算法的一个寻优案例,测试函数含有多个局部极值，尝试用PSO算法寻找全局极值(a case of Particle Swarm Optimization algorithm.)

快速NCC(normalized cross correlation)算法实现。比matlab自带的normxcorr2 快10-20倍。在windows Unix环境下c语言，和matlab编译通过。(use Matlab on Windows or Linux or Mac OS X and want fast (exact, general-case) normalized correlation (NCC) code right now, then download it and enjoy the large performance gain over Matlab s normxcorr2 (demo included). For the brave (and/or masochistic) there is B), however, it is unlikely you will do better than the above. Thanks to Liang Jin for making the OS X binary (his performance comparison graph on a PowerPC). )

实现蔡氏电路的混沌模拟，运行环境需要matlab程序(The realization of Chua' s circuit chaotic simulated)

说明：  很经典的matlab源程序的学习案例，方便大家学习，欢迎下载！！(Classic matlab source case study, to facilitate learning, welcome to download! !)

具有丰富的参数选项,小波包分析提取振动信号中的特征频率，高斯白噪声的生成程序。( It has a wealth of parameter options, Wavelet packet analysis to extract vibration signal characteristic frequency, Gaussian white noise generator.)

说明：  数学实验：使用MATLAB书的源码 实验1 矩阵运算与Matlab命令 1.1 知识要点与背景:日常矩阵及其运算 1.2 实验与观察:矩阵和Matlab语言 1.3 应用、思考与练习 实验2 函数的可视化与Matlab作图 2.1 实验与观察:函数的可视化 2.2 应用、思考与练习 实验3 函数式——直接确定型模型 3.1 知识要点与背景:函数——直接确定型模型 3.2 实验与观察:插值与拟合 3.3 应用、思考与练习 实验4 微分、积分和微分方程 4.1 知识要点与背景:微积分学基本定理 4.2 实验与观察(I):数值微积分 4.3 实验与观察(II):Matlab符号微积分简介 4.4 应用、思考与练习 实验5 用导数作定性分析 5.1 知识要点:函数作图——用导数定性描述函数 5.2 实验与观察:微分方程的定性解图示 5.3 应用、思考与练习(Mathematical Experiment: Using MATLAB source book)

九点差分格式，精度比五点差分要高，对于实现有限差分，是一个重要的程序(Nine-point difference scheme, the accuracy than the five-point difference is higher, for the realization of finite-difference, is an important procedure)

贪食蛇游戏的matlab实现，特别适用于matlab初学者，能很快的提高其matlab水平(Matlab games贪食蛇realize, especially for beginners in matlab that can quickly improve the level of its matlab)

用ofdm方法产生超宽带uwb信号，并绘出信号图形。(Methods using ultra-wideband OFDM UWB signal and the signal mapped graphics.)