包括邓氏关联度、绝对关联度、斜率关联度、改进绝对关联度,音频信号通过LM386放大，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块。- Including Deng s correlation, absolute correlation, correlation of slope, improved absolute correlation, LM386 audio signal amplification, ofdm system simulation including 16