Title :
A novel UEP scheme based upon rateless codes
Author :
Ni, Chunya ; Hou, Chunping ; Xiang, Wei
Author_Institution :
Sch. of Electron. & Inf. Eng., Tianjin Univ., Tianjin, China
Abstract :
In this paper, we 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. We implement duplicating windows and expanding windows techniques to improve the performance of both more important bits (MIB) and less important bits (LIB). We 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. Furthermore BER performance of LIB of D-EWF codes converges very fast. Compared with the previous UEP schemes, simulation results show that the D-EWF codes can provide better UEP performance.
Keywords :
error correction codes; UEP scheme; asymptotic analysis; binary erasure channels; duplicating windows technique; duplicating-expanding window fountain codes; expanding windows technique; less important bits; more important; rateless codes; unequal error protection; unequal recovery time; Bit error rate; Educational institutions; Error correction codes; Indexes; Robustness; Simulation; Solitons; Expanding Window Fountain Codes; LT Codes; Unequal Error Protection;
Conference_Titel :
Wireless Communications and Networking Conference (WCNC), 2012 IEEE
Conference_Location :
Shanghai
Print_ISBN :
978-1-4673-0436-8
DOI :
10.1109/WCNC.2012.6214437
