Hi Ron, Tangential to the subject only, do you know if LDPC has optimizations for ARM archs in libvolk? Arm64 mainly.
Thanks, Adrian On March 18, 2021 11:54:42 AM UTC, Ron Economos <[email protected]> wrote: >I haven't tried it, but it may be possible on a Raspberry Pi 4. I >wouldn't bother with anything less than a RPi4. I have successfully run > >a modified DVB-T2 flow graph on a Beagleboard-X15, but only at 5 MHz >channel width (5.714285 Msps). > >I've attached the flow graph. It uses short frames and 5/6 code rate to > >limit the amount of LDPC processing. It also sends a lot of dummy >symbols, again to limit the amount of processing. However, it still >attains 19.057285 Mbps at 5 MHz channel width. If you can get it to run > >at 8 MHz channel width, the bitrate will be 30.491656 Mbps. > >It's also tuned for UHD v3.13.0.3-rc1. If you're using a later version >of UHD, change send_frame_size=65536 to send_frame_size=8192 in the UHD > >Sink block. Using large USB frames helps to significantly lower >processor load, but this feature has been removed from later versions >of >UHD. > >Ron > >On 3/18/21 04:17, Ali G. Dezfuli wrote: >> Hi all, >> >> Is there any experience in transmitting DVB-T2 with gnuradio and >> raspberry pi (any version)? >> I just wonder if it can work real-time with about 9 MHz sampling >> frequency of 8 MHz DVB-T2. >> Thank you! >> >> BR, >> AGD
