1 Antennas, propagation and radio networking, The Technical Faculty of IT and Design, Aalborg University, VBN2 Department of Electronic Systems, The Technical Faculty of IT and Design, Aalborg University, VBN3 The Faculty of Engineering and Science (TECH), Aalborg University, VBN4 Multimedia Information and Signal Processing, The Technical Faculty of IT and Design, Aalborg University, VBN
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.
I E E E Communications Letters, 2013, Vol 17, Issue 8, p. 1636-1639