On 04/21/2014 09:02 PM, Jonathan Fox wrote: > Hey list, another OFDM question. > > I have this simple OFDM script I have used before and in between USRPs I > have VHF handheld radio I am using as an interferer (also have plenty of > attenuation, between USRPs it is about 30 dB and the handset is > attenuated by 55 dB). So with interefering signal around -23 dBm in > between the the transmission 80 kHz channel which is at -32 dbm as > according to my handheld Spectrum Analyzer, GNU Radio's FFT plot on the > RX side gives a transmission of -90 dB and an interference at -50 dB. > > Whenever the handheld goes off, the receiver predictably loses the > transmitted message and freezes up or the scope goes blank. Depending on > the duration of the interference of the handheld (just a simple click of > the tx) usually causes the receiver to lock up and not receive/never > recover transmitted comms again. > > So why does the RX never recover and how can this be mitigated? I am > still learning OFDM so I am thinking this is related to the channel > estimator, is my line of thinking correct?
The channel estimator holds no state, so I doubt that's the problem. Are you working off of master? Martin _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
