Re: [Discuss-gnuradio] 100 Msps FPGA code for USRP N210 - Gnu Spectrum analyzer

2011-03-19 Thread Marc Epard
On Mar 18, 2011, at 3:58 PM, Moeller wrote: > Thanks for publishing. This is very impressive, using Gnuradio as a spectrum > analyzer. Thanks. It's been a fun project. > - What about compensating the spectral shape within the measurement bandwidth? Seems doable. I'm only now learning signal pr

Re: [Discuss-gnuradio] 100 Msps FPGA code for USRP N210

2011-03-18 Thread Jeffrey Lambert
I am curious if anything like this is available for the USRP version 1, for anyone who might know. As a random side note, it would be interesting if future versions of the USRP contained off-board RAM chips for data buffering for just this purpose. The reason I suggest this is for making the

Re: [Discuss-gnuradio] 100 Msps FPGA code for USRP N210 - Gnu Spectrum analyzer

2011-03-18 Thread Moeller
On 18.03.2011 20:09, Marc Epard wrote: > We've customized an FPGA image for the N210 that lets us grab batches of 256K > complex samples (one SRAM full) at 100 Msps with no decimation, scaling, > or downconversion. It works by filling the SRAM with samples at full rate, > then dribbling them out

[Discuss-gnuradio] 100 Msps FPGA code for USRP N210

2011-03-18 Thread Marc Epard
I posted this to the USRP users list since we're not using GNU Radio proper for this project, but Devin's questions about spectrum sensing make me think it could be useful for GNU USRP users, too. Although we did this on the N210, it might be possible to do something similar on the USRP2. We've