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

From: Vincenzo Pellegrini
Subject: Re: [Discuss-gnuradio] DVB-T Modulation over low-end ATOM CPU
Date: Sat, 27 Nov 2010 05:27:27 +0100

Hi William,
nice to hear that you appreciate the work.
Here you can see what happened when we applied MA to our ETSI DVB-T demodulator earlier this year. We demoed this at WSR10, Karlsruhe, Germany. 
Since then, we increased the amount of MA within the receiver chain, which yielded major computational performance improvements.

The dream that we're aiming for is to be able to provide some sort of MA compiler which can automatically implement an SDR including as much as possible of the MA computational benefits, once given a high level C++ description of the radio chain.



2010/11/26 William Cox <address@hidden>
That's awesome work Vince.
Not being much of a programmer myself, do you plan on releasing any libraries that would help folks take advantage of this technique?
Also, have you applied MA to demodulation?

On Fri, Nov 26, 2010 at 7:32 AM, 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.

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, compuational cost can be further reduced.

Of course, not comparable to the power efficiency of an ASIC. Yet.

regards to everybody


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