ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，基于人工神经网络的常用数字信号调制，阐述了负荷预测的应用研究。- ofdm system simulation including 16qam modulation fft windowing modules plus cp, The commonly used digital signal modulation based on artificial neural network, It describes the application of load forecasting.