I transmit a carrier at 2.45GHz using one USRP and recieve using
USRP as it is required for my application.
But the spectrum i get has a frequency offset of about 7.68KHz as shown
the attached file.
So, I used gr.freq_xlating_fir_filter after usrp_source to
the signal to baseband (based on the advice by Micheal Dickens,thank you
However, the signal spectrum I got is not exactly at zero, it is around
Moreover, the spectrum is too distorted as shown in the 2nd figure
So, can this distortion be removed using the parameters or is there some
- The sampling rate of the original recieved signal from USRP was
64MHz/128=500KHz, so I used decimation factor of 500 in the xlating
such that the output baseband signal will have a sampling rate of
- since the frequency offset of the signal in 1st figure is -7.68KHz, i
used the opposite freq_offset=7680 in the xlating filter.
- i used cut off frequency =500Hz and width of transition