Respected sir,
I
am using N-200 USRP for transmitting a signal. While
transmitting, I have
changed
the Gain value in the SDRu
transmitting block, but my signal strength at the receiver remains the
same. I also stop and restart the code but the change in
gain does not affect the received signal. I have tried the
changing gain via both available options i.e., input port
and dialog, but it seems to have no effect
on the receiver. The signal strength at the receiver remains the
same. I have tried 30 dB(Maximum gain) to 0 dB (minimum
gain) in both cases received SNR is the same
(i.e.,15 dB). I am using a wireless connection in
line-of-sight, with minimum Tx gain at least a few
drops
in SNR should be observed. I have also tried -50dB (just
checking) but no
effect in the SNR is observed. The same thing I have
tried using B210 as Tx, Rx signal strength does change in
this case. However, while using N-200, no
effect of changing the gain value is observed. Somehow gain
value is fixed in N-200 while using the MATLAB
SDRu block. Can you PLEASE HELP ME!!! IT IS VERY, VERY
IMPORTANT.