软件无线电实现的收音机,实测音质清晰,IQ数据采集及解调过程如下(RF前端e4000, ADC及USB数据传输rtl2830)
RFfrontendtunetoxxxMHz->acqusitionI/Qdata(highspeedADC,3.2Msps)->fir_xlating_filter_ccc(decim,lowpassTaps(),center_freq,OriginSampleRate)->decimationI&Q,DUC/DDCforFinetunealternative,LowPasstobrocastF