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UEP LT Codes with Intermediate Feedback
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DOI：10.1109/LCOMM.2013.070913.130657.png)
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Abstract
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We analyze a class of rateless codes, called Luby transform (LT) codes with unequal error protection (UEP). We show that while these codes successfully provide UEP, there is a significant price in terms of redundancy in the lower prioritized segments. We propose a modification with a single intermediate feedback message. Our analysis shows a dramatic improvement on the decoding performance of the lower prioritized segment.
Keywords:
Rateless codes
fountain codes
LT codes
unequal error protection
feedback
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