As one must keep his own promises (and I promised indeed a few months ago),
here is the link to the full MA paper
www.pellegrini-radio.it/MA
available for anyone who might be interested in trying to apply these ideas
to SDR, especially within the typical GNURadio, GPP-based processing
paradigm.
Just two very small "release notes"
1. MA Design is not yet a "machine task", i.e. no MA-compiler can be written
so far. Still we believe this will be possible.
The MA design section called RTAR is indeed already algorithmic, while
what we call AS, remains for the moment a
human design task. In our opinion, by fixing algorithmic rules for AS,
something like an MA-compiler could be rather
reasonably written.
2. Still, our current priority is not to make MA "automatic", as this will
surely be done in the future, in case MA proves to be an
effective technique for SDR implementation.
Our aim is instead to prove such effectiveness by showing how big
achievable MA acceleration factors may be.
I.e. how significantly an SDR might benefit from memory-implementation
of some of its critical parts, as long as this
can strongly increase performance (energy-efficiency) without causing
"losses in system reconfigurability and generality",
thus preserving the most valuable peculiarity of an SDR.
So far, we've boosted our implementations through MA by something
slightly bigger than a factor 10. We obtained this with
some months of work, and by applying the concept of "memory space
specialization" as described within the attached
paper, on an ultra cheap (150 € Intel Q9400) standard CPU.
We strongly believe that:
A. Obtained acceleration factors can still grow by further applying
techniques described within the paper on ordinary
commercial GPPs
B. Much larger acceleration factors are available if we use
computational back-ends being designed ad-hoc for
memory based techniques like MA. (i.e. prioritizing memory
access wrt pure computation)
Our research effort is currently concentrated on proving such two concepts
to be right.
Upon success, we believe interesting possibilities could open up for SDR as
a radio-implementation technology, eventually
leading to substantial broadening of its application spectrum.
thanks for interest to those interested ;-) ,
apologies to those that are not.
Best Regards to Everybody
vince
PS.
small repost of MA-related video demos / conference presentations, just in
case:
http://www.youtube.com/watch_videos?more_url=%2Fmy_favorites&video_ids=pwzUKS3OPjo%2CS5nGBDCxhmk%2C_mpPIU1czOs&type=7&index=1&no_autoplay=1
http://www.youtube.com/watch?v=AfvLCh8ADxk
http://www.youtube.com/watch?v=XxXW4Gya918
http://www.youtube.com/watch?v=7EuqKYKc6mg
--
Vincenzo Pellegrini
http://www.youtube.com/user/wwvince1
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