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Graph-based LT and raptor codes | IEEE Conference Publication | IEEE Xplore

Graph-based LT and raptor codes


Abstract:

This paper deals with LT and Raptor codes used on a noiseless channel, as it is the case for the BEC or the AWGN channel with high SNR. The performance measure for such f...Show More

Abstract:

This paper deals with LT and Raptor codes used on a noiseless channel, as it is the case for the BEC or the AWGN channel with high SNR. The performance measure for such family of codes is the efficiency, i.e., the average amount of redundancy needed to decode the information bits. We consider the new class of graph-based LT and Raptor codes, we analyze their efficiency and we show that the optimal degree distribution of the LT code depends on the rate of the precoder.
Date of Conference: 06-11 July 2008
Date Added to IEEE Xplore: 08 August 2008
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Conference Location: Toronto, ON, Canada

References

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