Re: raspberry pi + dvb-t2

[Ron Economos]

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).

Ron

On 3/18/21 04:17, Ali G. Dezfuli wrote:

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.

Hi all,


Thank you!

BR,
AGD

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.

vv009-4kfft.grc
Description: application/gnuradio-grc