Re: [Discuss-gnuradio] USRP Competition

2015-11-18 Thread Martin Braun
On 11/17/2015 04:43 PM, Ed Criscuolo wrote: > But you'll be REALLY unpopular if you plop a 6 MHZ wide channel right > in the middle of the voice VHF band! Not to mention earning a visit > from the FCC (if you're in the US)! ...and it's in usual business hours for the FCC :) M _

Re: [Discuss-gnuradio] USRP Competition

2015-11-17 Thread Ed Criscuolo
A "channel" is really just a high-level, somewhat arbitrary, agreement berween a sender and a receiver on how to view a particular hunk of spectrum. It will vary, depending on the application. For example, broadcast television divides its spectrum up into 6 MHz wide channels. Broadcast FM, on t

Re: [Discuss-gnuradio] USRP Competition

2015-11-17 Thread Marcus Müller
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 chann

Re: [Discuss-gnuradio] USRP Competition

2015-11-17 Thread Rama V
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 tra

Re: [Discuss-gnuradio] USRP Competition

2015-11-17 Thread Marcus Müller
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 sp

Re: [Discuss-gnuradio] USRP Competition

2015-11-16 Thread Rama V
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, 20