Hello,
This is a radio problem I can not explain:
Transmitter: USRPN210, BPSK, linkrate = 100kbps, TX-gain=15
Receiver: USRPN210, Rx-gain=15
TX-RX: 1.5m.
Below is what the I/Q samples I get, after timing synchronization. There is no center frequence offset as I share the same clk for tx and rx.
It looks like the if the I or Q amplitude is low, a frequency leakage is displayed in this picture. I have used the tune_request for both the tx and rx to the same offset of sample rate.
And I have monitored the radio spectrum by measuring the noise, no interference is found.
Really confused for this observation.
--
Alex,
Dreams can come true – just believe.
iq.png