Dear Dave, > So this channel concept lies in GNU Radio. No. The concept "channel" is how you, as a signal processing expert, look at a piece of spectrum. GNU Radio just sees samples.
If you build a GNU Radio system that filters out specific parts of the spectrum that *you* consider to be the channels of interest, then you'd have something that understands channels. Again, the implementation of the idea "this part of spectrum is a channel" is completely up to you -- all the hard- and software involved just sees a sequence of digital numbers. Best regards, Marcus On 11/17/2015 11:07 PM, Rama V wrote: > > Thanks for the reply Marcus. So this channel concept lies in GNU > Radio. How can I really set from what channel I need to send the data > or which channels are free for the transmission. Do I need to write > any code for that? I am performing DARPA Spectrum competition wherein > I need to perform data transmission between two USRP by sensing which > channels are free and sending the data. Please suggest > Thank you > > Regards, > Dave > > On Nov 17, 2015 5:29 AM, "Marcus Müller" <[email protected] > <mailto:[email protected]>> wrote: > > Dave, > > the USRP has no notion of "channels". It's a concept that you have > in your software that deals with the samples coming from the USRP. > You can configure the USRP to arbitrary center frequencies. > > Best regards, > Marcus > > On 16.11.2015 03:06, Rama V wrote: >> >> I would like to send data through specific channels among the >> USRP. How do I know what channels are available? I have tried to >> search for channels but I was not successful. Are there any >> commands that I need to provide for the available channels? >> Kindly help. >> Thank you >> >> Regards, >> Dave >> >> On Nov 11, 2015 5:29 PM, "Rama V" <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hey all, >> I would like to perform a specific application of competitive >> strategy(competition) with my two USRP available by detecting >> which channel is available for doing that. I have used the >> command of ./usrp_spectrum_sense.py 2.434G 2.438G which have >> shown me the results which is attached in the picture below. >> I would like to know of how to select which channel or >> frequency band is available for performing my competition and >> how will I be able to perform? Any suggestions are kindly >> appreciated. Sorry if I am not too brief with that. Thanks >> >> Regards, >> Dave >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] <mailto:[email protected]> >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] <mailto:[email protected]> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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