exercise3

应用于扩频通信，关于PN码扩频，在matlab中的完整程序代码。(Applied to spread spectrum communication, spread spectrum on the PN code in matlab full program code.)

用matlab实现OFDM仿真和性能分析(Achieved with the matlab simulation and performance analysis of OFDM)

matlab code for digital signal processing

for solving TSP in matlab using hopfield neural network

关于龙哥-库塔法的简单编写方程，此法参考数值分析中定步长的方法(About Ge- Kutta method of writing a simple equation, this method refer to the numerical analysis method of fixed step size)

光参量放大中信号波长对转换效率的影响matlab仿真代码(Optical parametric amplification of the signal wavelength conversion efficiency of matlab simulation code)

实数编码遗传算法中常用变异算子的ｍａｔｌａｂ实现及应用，用ｍａｔｌａｂ编写了各种变异算子并进行了比较(Common mutation operators in real coded genetic algorithms matlab implementation and application, various mutation operator was written using MATLAB and compared)

通过步进电机的数学模型对二相步进电机进行仿真，并通过卡尔曼滤波处理数据，最终通过处理后的数据预估两相步进电机的相电流和相电压。(The mathematical model of the stepping motor is used to simulate the two-phase stepping motor, and the data are processed by Kalman filter. Finally, the phase current and phase voltage of the two-phase stepping motor are predicted by the processed data.)

It is a matlab sourcecodes for the calculation of refrective index of AlGaAs alloy. I think it is useful for the guys who need the accurate value of the refrective index. It can be expanded to the other semiconductor alloy if you have the related parameters.

说明：  matlab 7Hu矩的提取 图像处理 (matlab 7Hu moment of extraction image processing)