Hi All,
I want to do a transmit receive application with USRP Network series,
with USRP N210s. I have used WBX TX/RX as transmitter and TVRX2 TX/RX
part as receiver. I used 206MHz as center frequency. Here is my
transmitter blocks
And my receiver blocks in GRC
My receiver graph before transmitter begin to transmit:
My transmitter graph when i begin to transmit, first one is zoomed up
part
and zoomed in down part.
And finally my receiver graph is the following graph. As you see there
is a DC peak that i didn’t send in the transmitter end.
I tried so much time but each time i saw this peak when i work in this
frequency (also other high frequencies). When i shift center frequency a
little bit then four of them shifting together. So it is together with
other three.
What is the reason of this peak. İs it because of transmitter or
receiver? When i use relatively low frequencies as center frequency (for
example 50MHz or 60MHz) then the DC peak is disappearing. (I attached
the images.)
Any help would be kindly appreciated.Sema