Date Added: Mar 2012
In this paper, the authors propose a novel method suitable for Unequal Error Protection(UEP) and Unequal Recovery Time (URT) properties, namely the Duplicating-Expanding Window Fountain(D-EWF) codes. They implement duplicating windows and expanding windows techniques to improve the performance of both More Important Bits (MIB) and Less Important Bits (LIB). They analyze the proposed method over Binary Erasure Channels (BEC) by using asymptotic analysis. The D-EWF codes inherit the advantages of both EWF codes and the duplicating windows method. Therefore the UEP property of D-EWF codes is more obvious.