Hi,
I am using OFDM + USRPB210 for data transmission. I am using two USRPB210s, one being
used as a transmitter and the other as a receiver. When I use only one of the channels
(RFA or RFB) the data can be transmitted properly. I needed to transmit two different data
at the same time, so I used both the USRP RFA and RFB. the baseband processing part of the
link was the same for both channels (including channel coding, modulation, FFT, etc.), but
at this point I found that I was transmitting data with a very high BER (for both links).
again, mentioning that there was no problem when sending on one channel alone, I The USRP
Sink and Source settings are shown in the attached picture.
where
freq1=2.4G
freq2=2.39G
lo_off1=2M
lo_off2=-2M
samp_rate=300K
The two signals are separated using different frequencies, I don't think there should
be any interference between them, and I have troubleshot errors other than USRP source and
sink, so I think there is something wrong with my parameter settings, or I am using the
two RF channels in an incorrect way. How should I modify this?Looking forward to your
response!
Best Regards!