A couple of things.
1) If you're capturing at 10 Msps, you need to resample to the DVB-T
sample rate of 9.142857 Msps. You can do that with a rational resampler
block set to interpolation = 64 and decimation = 70.
2) That's not a very good signal. It has a lot of multipath and poor SNR.
Ron
On 2/15/22 09:04, Szilassi Andras wrote:
Hello,
Once again I am asking for some help with the DVB-T functionality of
GNU radio.
I am using complex binary files recorded with a USRP at 10 Ms/s. The
DVB-T rx example chain can't decode it at all. I have changed every
setting according to Hungarian transmit parameters (64QAM, 1/4 GI, 3/4
code rate etc.).
I think the problem might be with symbol acquisition, but cant really
confirm my suspicion.
Below you can see the signal I am talking about. Could it be that for
this type of synchronization this SNR is not sufficient?
image.png
Thanks,
András Szilassi
