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Re: [Discuss-gnuradio] DVB-T/T2

From: Ralph A. Schmid, dk5ras
Subject: Re: [Discuss-gnuradio] DVB-T/T2
Date: Tue, 7 Apr 2015 07:04:00 +0200

Hmm, now I see, there is an option "constellation rotation" in the modulator block. Maybe this is not an accident, but wanted behavior?! I will check this evening...



From: address@hidden [mailto:address@hidden On Behalf Of Ralph A. Schmid, dk5ras
Sent: Tuesday, April 7, 2015 06:39
To: address@hidden
Subject: [Discuss-gnuradio] DVB-T/T2




With Rons help I got the DVB-T/T2 flowgraphs up and running.


DVB-T works great, no issues at all, while DVB-T2 is somehow flaky in reception.


When using a cheap DVB-x tester, the DVB-T2 constellation is phase shifted. I have no real world T2 signals to compare, but at least the tester shows normal constellation views when looking at S and T signals off the air.


This is how things look:




The flowgraphs are almost original, just adopted to the USRP B210, and I added channel slider...


Any ideas what I could tweak?




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