QoS-Oriented Scalable Video Transmission Using Cooperative Relay  

作　　者：XIAO Hongjiang JI Xiangyang DAI Qionghai 

机构地区：[1]Department of Automation, Tsinghua University, Beijing 100084, China [2]Academy of Broadcasting Planning, SARFT, Beijing 100866, China

出　　处：《Chinese Journal of Electronics》2012年第3期575-578,共4页电子学报（英文版）

基　　金：Manuscript Received Aug. 2010; Accepted Apr. 2011. This work is supported by the National Basic Research Program of China （973 Program） （No.2010CB731800）, the National Natural Science Foundation of China （No.60721003）, and the Scientific and Technological Innovation Nurture Funds of MOE （No.707005）.

摘　　要：For single-antenna video communications, the potential unreliability of direct link and the delay constraints of video are two primary factors that influ- ence the reconstructed video quality. A novel cooperative transmission scheme is thus proposed to tackle this prob- lem. Specifically, the source and relay jointly retransmit the corrupted packets by suitable Space-time block codes （STBCs）, which raises the capacity utilization of random channel. Additionally, a Quality-of-service （QoS） mapping strategy smartly loads the scalable video to the underlying STBCs, and guarantees that more important video packets obtain higher transmission priorities and stronger protec- tions. Simulation results demonstrate the effectiveness of our proposed scheme.

关 键 词：Cooperative relay Space-time blockcodes Scalable video Delay constraint. 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN919.8[自动化与计算机技术—计算机科学与技术]