Passive-filter-caculation

this programe for count path loss from power level in transmission media. with walfish ikegami method and implement with semolog graphic.it can show the maximum pathloss in propagation

sampling of rect signal

基本PSO极易陷入早熟收敛，而此算法在基本PSO的参数上做一些改进，从而达到增强多样性，避免过早的陷入局部最优，并发生早熟收敛。.......

实现设置滚都轴承的参数，然后计算滚都轴承的刚度矩阵，位移和受力

电力牵引电机控制，设计的目的是用MatLab得到系统的状态空间模型，计算系统的传递函数。并预测系统的阶跃响应，并判断系统是否能控和能观。(Electric traction motor control, is designed to be used MatLab system state space model to calculate the system transfer function. And predict the system step response and determine whether the system is able to control and observability.)

qpsk modulation 这是从网上下载的。已经经过验证。(qpsk modulation which include the generation of random number, and eye diagram, power spectrual density)

多用户检测 直接序列扩频 码解码部分(multiuser detesion)

This is PCA source. please contact me if you have some question.

这个是梯度跟踪算法的程序，在接收数据改变的情况下改变权值，实现波束跟踪(This is a gradient algorithm to track the process of receiving data in case of change in the right to change the value, the realization of beam tracking)

说明：  MATLAB时频分析工具箱源代码，包括使用说明各种函数库等等(Toolbox MATLAB source code for time-frequency analysis)