Hi Leo, thanks for following up on this! I'll just comment in your reply; I hope that is OK for you.
On 12/04/2014 06:05 PM, Leo Yang wrote: > Hi sir, > I'm using USRP2 now, as the sample rate is limited to 25MHz for 16bit > sample, I thought it can only sweep 25MHz at one time, but when u said USRP > source can get as much bandwidth at once, it confused me. Yes, the instantaneous maximum bandwidth with 16bit over Gigabit Ethernet is 25MHz. But: That is not "sweeping", it's just sampling that much bandwidth at once. > The Wi-Fi frequency is from 2.38GHz to 2.42GHz,which 25MHz is not enough for > such large bandwidth. Or is there any misunderstanding of these concept? I don't think you're misunderstanding :) A standard 802.11g channel is only rougly 20MHz wide, the 802.11n transmissions might be twice as wide, so I guess this was my misunderstanding. I'm understanding now that you want to have a sweeping spectrum analyzer; usrp_spectrum_sense implements that, but in a manner that does not use timed commands, which is kind of undesirable for a However, in the gr-uhd/example/grc folder, you will find an example, called uhd_msg_tune.grc, which behaves a bit similar to usrp_spectrum_sense, and you could connect a metadata file sink parallel to the QT gui sink. Greetings, Marcus _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
