是小学期课程设计的题目，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，小波包分析提取振动信号中的特征频率。- Is the topic of the elementary school stage curriculum design, ofdm system simulation including 16qam modulation fft windowing modules plus cp, Wavelet packet analysis to extract vibration signal characteristic frequency.