FIR 底通和带通滤波器和IIR 底通和带通滤波器，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，关于非线性离散系统辨识。- Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, ofdm system simulation including 16qam modulation fft windowing modules plus cp, Nonlinear discrete