AW: Re: DVB-T2

Müller, Marcus (CEL) mueller at kit.edu
Mon Aug 26 12:11:46 UTC 2019


No.

The fact that you can use your RTL dongle as SDR device is because one
can *bypass* most of the digital logic (demodulator, decoder, stream
extractor…) and just get a raw IQ stream.
Decoding DVB-T in software is a really CPU-intense problem, due to
high-rate (in both senses of the word) channel coding, complex
synchronization, and high-order constellations used.

Best regards,
Marcus

On Sun, 2019-08-25 at 05:02 +0200, Ingo.Wolf at gmx.de wrote:
> But isn't SDR demodulation in software?
>  
> -----Ursprüngliche Nachricht-----
> Von: "Steve Markgraf" <steve at steve-m.de>
> Gesendet: Samstag, 24. August 2019 18:19
> An: osmocom-sdr at lists.osmocom.org; Ingo.Wolf at gmx.de
> Betreff: Re: DVB-T2
> Hi,
> 
> On 24.08.19 12:14, Ingo.Wolf at gmx.de wrote:
> > can somebody confirm RTL-chip is not DVB-T2 capable not having 10MHz
> > bandwidth needed?
> 
> The RTL2832U does not support DVB-T2 as it lacks the required
> demodulater hardware. On the RTL2832P, an external demodulator can be
> attached via a parallel MPEG TS interface. This is used by dongles
> manufactured by Astrometa, which attach a Panasonic MN88472 DVB-T2
> demodulator, see [1].
> 
> Regards,
> Steve
> 
> [1] https://steve-m.de/pictures/rtl-sdr/rtl2832p_dvbt2/
> 
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