Ok thanks, so it's a limit in the RFNoC software and not related to Ettus FPGA hardware or something like that? I dont see that limit in regular GNURadio and 8192 channels works fine, isnt the packet size also max 9000 there? Simon
On Thu, Mar 3, 2016 at 3:45 PM, Marcus D. Leech <mle...@ripnet.com> wrote: > On 03/03/2016 05:21 AM, Simon Olvhammar wrote: > >> Hi, >> >> I'm wondering what it would take to modify the current FFT RFNoC block to >> be able to compute a 8192 channel FFT. Someone that can guide me in the >> right direction? I'm a quite experienced programmer, however not in HDL. >> >> Best regards >> Simon >> >> >> The main current stumbling block to large FFTs in RFNOC is that the FFT > output has to be able to fit into a single transport packet, and > that is limited to 9000 bytes, which pretty-much limits you to 2048-bin > FFTs. There will be work in the future to allow FFT outputs in > RFNOC to span multiple packets. > > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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