An extended packetization-aware mapping algorithm for scalable video coding in finite-length fountain codes  

作　　者：CAO CongZhe FEI ZeSong XIAO Ming HUANG GaiShi XING ChengWen KUANG JingMing 

机构地区：[1]School of Information and Electronics,Beijing Institute of Technology [2]School of Electrical Engineering,The Royal Institute of Technolgoy

出　　处：《Science China(Information Sciences)》2013年第4期109-118,共10页中国科学（信息科学）（英文版）

基　　金：supported in part by China Mobile Research Institute,Sino-Swedish IMT-Advanced and Beyond Cooperative Program (Grant No. 2008DFA11780);China National S&T Major Project (Grant No.2010ZX03003-003)

摘　　要：We propose an extended packetization-aware mapping algorithm based on fountain codes to enhance video stream performance which is vulnerable to packet losses. By properly utilizing the proposed algorithm in finite-length cases, the edges connecting to a source symbol are scattered over multiple encoding packets so that the decoding probabilities are increased. Furthermore, an improved degree distribution is designed to obtain better decoding probabilities. Numerical results, it is confirmed that the proposed algorithm in finite-length cases can augment decoding probabilities and the improved degree distribution can increase peak signal-to-noise ratio （PSNR） of scalable video coding （SVC） in a hostile communication environment.We propose an extended packetization-aware mapping algorithm based on fountain codes to enhance video stream performance which is vulnerable to packet losses. By properly utilizing the proposed algorithm in finite-length cases, the edges connecting to a source symbol are scattered over multiple encoding packets so that the decoding probabilities are increased. Furthermore, an improved degree distribution is designed to obtain better decoding probabilities. Numerical results, it is confirmed that the proposed algorithm in finite-length cases can augment decoding probabilities and the improved degree distribution can increase peak signal-to-noise ratio （PSNR） of scalable video coding （SVC） in a hostile communication environment.

关 键 词：packetization-aware mapping fountain codes degree distribution scalable video coding 

分 类 号：TN919.81[电子电信—通信与信息系统]