On Sat, Jun 18, 2005 at 01:26:27AM -0400, Krzysztof Kamieniecki wrote:
> I confused as to how the USRP FPGA scales the ADC signal. It appears
> that on the setup we are using, which has some customized DC Rx
> daughter boards, when we put in a 2V p-p square wave with a DDC center
> frequency of
Hi all,
I'm trying to take an FFT of an FFT Basically, I want to tune to a
signal, and for a given RF frequency, try to spot periodic usage of that
frequency. Is this possible? What I have now is hopelessly slow, so I'm
not really sure if I've got it right.
My construct so far is like th
On Sat, Jun 18, 2005 at 08:18:38PM -0400, James Cooley wrote:
> Hi all,
>
> I'm trying to take an FFT of an FFT Basically, I want to tune to a
> signal, and for a given RF frequency, try to spot periodic usage of that
> frequency. Is this possible? What I have now is hopelessly slow, so I'm
Eric Blossom wrote:
Once you've got your individual streams of signals, for each one I
would compute an estimate of whether it is occupied.
Good suggestions.
Elaborating on this a little, you might consider taking
differences of successive magnitude or power spectra. If
you're actually look
