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Searching for the best performance LDPC or TC for competition

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Jarek Duda

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Apr 28, 2012, 4:35:41 AM4/28/12
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We have implemented some new approach to forward error correction and
it essentially outperform all state-of-art methods we could find - we
would like to ask if someone knows some better ones?
For now there is only correction for Binary Search Channel (each bit
has independently given probability to be flipped), but this channel
is extremely difficult to get near Shannon's limit, making it perfect
to compare different approaches.
Here is comparison of output BER to input BER for different rate 1/2
or 1/3 codes (LDPCs come mainly from MacKay's library):
http://dl.dropbox.com/u/12405967/comaprison.jpg
The others give up at about 7.5%, while ours (triangles) provides
similar correction for 9.25%.
Here is implementation and link to arxiv paper: https://indect-project.eu/correction-trees/

ps. I apology for placing it on comp.compression, but it's the closest
to error correction and most of concepts involved has appeared thanks
of working on entropy coder (Asymmetric Numeral Systems).
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