信号处理的快速傅里叶变换，自己挑的程序，如果运行不正确，请更改-The fast Fourier transform signal processing, pick their own procedures, if running is not correct, please change

三相异步电机转差频率矢量控制模型，通过spw正弦脉冲调制控制逆变器-Three-phase induction motor slip frequency vector control model through the the spw sinusoidal pulse modulation inverter control

仿真高斯白噪声信道下QPSK的Eb/N0与误比特率之间的关系。 要求： 任选一种工具进行仿真：SPW、Matlab、Simulink。 成型滤波器采用根升余弦滚降滤波器，滚降系数为0.5，过采样因子为4 要求仿真至1e-5误比特率 。 与理论值对比，绘出对比曲线-Simulation of Gauss white noise channel QPSK between Eb/N0 and bit error rate of the relationship. Require

基于s函数的spw仿真程序简单易懂便于操作(SPW simulation based on s function)