Re: [Discuss-gnuradio] gr-drm reconfiguration & Channel simulations

Hi Ben,

the flowgraph is not tested at all as I have no DRM+ receiver to test against. I'm not aware of any other open source implementations.

- Felix

On 11/09/2016 05:29 PM, Benny Alexandar wrote:

Hi Felix,

Any update on DRM+, I'm planning to use DRM+ transmission using gr-drm. Is it fully functional and tested ?  DREAM doesn't support DRM+ reception. Any open source receiver available to receive DRM+ ?

-ben

---

From: Felix Wunsch <felix.wunsch@kit.edu>
Sent: Monday, November 7, 2016 5:44:16 PM
To: Benny Alexandar; discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] gr-drm reconfiguration & Channel simulations

 

Hi Ben,

even though the stable version should work, please use the master branch, which contains all the recent changes. As you can see in the commit log, we moved our activity towards the kit-cel fork.

Regarding the DRM receiver: Actually, a student of mine wrote some code during his Master's thesis this year.We did not yet merge it into gr-drm, you can find the code here: https://github.com/florianbrauchle/gr-rxdrm. The code probably won't run in real-time, though. As the audio decoder is still missing, we never had to look into issues like clock drift.

- Felix

On 11/05/2016 05:31 AM, Benny Alexandar wrote:

Hi Felix,

>>>>

I'm happy to hear that gr-drm is being used! I hope you are using the newest version, I did quite some refactoring some time ago.,

I pulled the git stable version from this link,
https://github.com/kit-cel/gr-drm/tree/stable

Which is the latest version of gr-drm ?  I see another git version
https://github.com/fewu/gnuradio_drm

which one to use to get the latest changes ? Please send me the link. Do you have anyworking version of DRM receiver available on git ?

I'm using USRP N210 for transmission. Have you looked at receiver audio tracking to make sure the DRM receiver is compensating the drift in audio sample rates, to prevent overflow/uderrun etc ?

-ben

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Cheers
Felix

--   Karlsruhe Institute of Technology (KIT)  Communications Engineering Lab (CEL)    Felix Wunsch, M.Sc.  Research Associate    Kaiserstraße 12  Building 05.01  76131 Karlsruhe    Phone: +49 721 608-46276  Fax: +49 721 608-46071  E-Mail: Felix.Wunsch@kit.edu    www.cel.kit.edu    KIT -- University of the State of Baden-Württemberg and  National Laboratory of the Helmholtz Association

--   Karlsruhe Institute of Technology (KIT)  Communications Engineering Lab (CEL)    Felix Wunsch, M.Sc.  Research Associate    Kaiserstraße 12  Building 05.01  76131 Karlsruhe    Phone: +49 721 608-46276  Fax: +49 721 608-46071  E-Mail: Felix.Wunsch@kit.edu    www.cel.kit.edu    KIT -- University of the State of Baden-Württemberg and  National Laboratory of the Helmholtz Association

--   Karlsruhe Institute of Technology (KIT)  Communications Engineering Lab (CEL)    Felix Wunsch, M.Sc.  Research Associate    Kaiserstraße 12  Building 05.01  76131 Karlsruhe    Phone: +49 721 608-46276  Fax: +49 721 608-46071  E-Mail: Felix.Wunsch@kit.edu    www.cel.kit.edu    KIT -- University of the State of Baden-Württemberg and  National Laboratory of the Helmholtz Association