On 09/26/2016 04:31 PM, Ed Criscuolo wrote: > What about an RFNoC solution?
That's what Sylvian was alluding to :) M > > @(^.^)@ Ed > Sent from my iPhone > >> On Sep 26, 2016, at 7:16 PM, Sylvain Munaut <[email protected]> wrote: >> >> Hi, >> >> >>> It seems like a perfect fit for a poly phase filter - however this is >>> something that I believe needs to be done in hardware (128 channels * >>> 200khz = about 60mhz sample rate this will not go over a USB cable, and >>> I doubt I can get this bandwidth into a laptop PC. >> >> !?!? >> >> 128 channels of 200 kHz = 25.6 MHz of bandwidth. You can totally get >> that to a laptop. >> B2xx or BladeRF will do that without issues given a sufficiently good laptop. >> Even a hackRF with USB2 only can nearly do it ( 20 MHz ). >> >> If the transmission are "infrequent" you can even use the same trick >> that researchers used a while back to listen to all of bluetooth and >> deliberately alias the signal to fold the spectrum over itself. >> >> >>> Am I going to have to do FPGA work on my own? >> >> Very likely. >> >> >>> Or - is there some existing cook book solution with the FPGA >>> configuration pre-cooked? >> >> Very unlikely to find something "all done". >> Especially that if you don't want to ship the samples, a PFB is not >> all you need. You'd need demod for each channel in the hardware as >> well. >> >> >>> What I am looking for is the FPGA channelizer solution... hopefully an >>> existing one I could start with? >> >> There is an embryon of one in the ettus rfnoc repo and AFAIK they >> might also replace it with another version soon. >> >> But it's written for RFNoC and Series-7 Xilinx fpga. It'll need quite >> some adaptation to run on anything else. >> Also, AFAIU, it's incomplete and non-tested currently so ... YMMV. >> >> >> Cheers, >> >> Sylvain >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
