Hello everyone,
I am using usrp B200 as receiver over GSM frequency band. It is working fine when i am capturing at any particular frequency with the default configuration (only done uhd_usrp_probe) of the usrp B200 board.
During Frequency hopping case, by capturing wideband channels (Through GR-GSM) ,The wideband captured data decoding was done succesfully by Gnuradio Flowgraph but Audio voice was missing. I feel that the audio packets are not being captured over the hopping channels.
So i changed the default configuration of usrp b200 to this, By setting bandwidth, sample rate and ref-level by the following command:
./benchmark_rate --rx_rate 1.8e6
./rx_ascii_art_dft --freq 946.8e6 --rate 10e6 --gain 30 --bw 10e6 --ref-lvl -30
After changing the configuration on USRP board, When capturing the frequency of 946.8 M with a sample rate of 10M. certain packets (signalling data)are missing over many channels leading to decoding failure . What should be the appropriate configuration on USRP board so that GSM receiver is working properly with Hopping and Non hopping scenarios(with Audio/signalling data).
Regards,
Arohan
