Re: DVB-T receiving

[Ron Economos]

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?

Thanks,
András Szilassi