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Re: [Discuss-gnuradio] DVB-T Modulation over low-end ATOM CPU

From: Gaetano Mendola
Subject: Re: [Discuss-gnuradio] DVB-T Modulation over low-end ATOM CPU
Date: Fri, 26 Nov 2010 14:57:33 +0100

On Fri, Nov 26, 2010 at 1:32 PM, Vincenzo Pellegrini <address@hidden> wrote:
> Hi fellow GNURadioers,
> just in case somebody is interested, this is the main dish of our SDR demo,
> which we will be presenting within GLOBECOM 2010 (Miami, FL) demo session on
> Dec. 8th.  Title of the demo is "Showcasing MA potential", as it aims to
> provide a glimpse of computational performance results that one might have
> by applying the programming technique described
> in http://www.pellegrini-radio.it/MA/ to an SDR system.
> http://www.youtube.com/watch?v=0mGn7FF9Gc8
> The video proves real-time, live ETSI DVB-T modulation for 4 standard
> resolution channels (11.612 Mbps useful protected bitrate) to be possible
> .:. over an Intel ATOM N270 CPU
> .:. which consumes 2.5 Watts of electrical power
> .:. by requiring less than 70 % of its computational power
> with nothing but C++ code and MA technique involved.
> We believe there is still margin for application of the MA technique,

Hi Vincenzo,
I have read with interest your article because I'm particulary
interested in the use of
such tecnique, however it's not clear to me, may be you have to
clarify it in the article
to enlight the reader, what the MA tecnique does more than apply the
old but still good
principles (used since decads in the software industry) such:

1) Divide et impera
2) Look up table.

The results you obtained are encouraging, in the sense that still in
2010 such old principles
are still of valid use.

Gaetano Mendola


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