md_gauss

采用正交频分复用（OFDM）调制的跳频系统仿真模块，利用Simulink工具箱搭建。可更改跳频跳速,跳频频率数，载波频率，跳频间隔，FFT运算长度,循环前缀位数等相关参数。信道采用瑞利多径衰落信道和高斯信道，相关参数也可更改。希望有一定的参考价值，也希望站长开通我的下载功能，ID：gly201,非常感谢！(A simulation on Hopping Frequency communication system based on the OFDM technique.)

说明：  band pass filters in matlab

双馈电机的仿真模型，其中双馈电机是自己根据双馈电机的电气四阶微分方程搭的，用的不是matlab/simulink自带的。(DFIG simulation model，realized by forth order ODEs.)

C-C法计算最大李雅普诺夫指数的延迟时间和嵌入维数(C-C calculated maximum Lyapunov exponent of the delay time and embedding dimension)

利用MATLAB实现2ASK信号的调制解调，其中振幅键控信号随机产生。(Using MATLAB realize modem 2ASK signal, wherein the amplitude shift keying signal is generated randomly.)

说明：  使用BP算法实现异或功能，由matlab编程实现，可正确运行。(BP algorithm using the XOR function, the matlab programming, can be run correctly.)

姜启源+数学建模,一本介绍数学建模的经典书籍。(Jiang Qiyuan+ mathematical modeling)

ABAQUS UMAT code 适用于平面应变，轴对称的黏弹塑性线性应变硬化材料，适用于大变形。(The ABAQUS UMAT code applies to plane strain, axisymmetric viscoelastic plasticity linear strain hardening material, suitable for large deformation.)

解决高维优化问题，解决多峰函数求极值的问题(solve n dimension )

This Matlab code calculates the Rand Index and Adjusted rand Index between two clustering groups. The two input clusters has to be in the form of a structure as shown in the example mat file ( A and B ) attached in the folder. The code calculates the contingency table among the cluster and then calculates the Rand Index and Adjusted Rand Index. Using the value of the indices one can know about the similarity of the clustering group