Trade-off Optimization for Scalable Video Coding Streaming in Relay-Based OFDMA Networks  

基于中继的OFDMA网络中可扩展编码视频流传输的权衡优化(英文)

作　　者：由磊 Wei XIANG 侯春萍 雷建军 侯永宏 

机构地区：[1]School of Electronic and Information Engineering, Tianjin University [2]Faculty of Engineering and Surveying, University of Southern Queensland

出　　处：《China Communications》2013年第5期99-113,共15页中国通信（英文版）

基　　金：partially supported by the National Natural Science Foundation of China under Grants No. 610202380, No. 60932007;Major Program of National Natural Science Foundation of China under Grant No. 60932007;Tianjin Research Program of Application Foundation and Advanced Technology under Grant No. 12JCQNJC00300;Research Fund for the Doctoral Program of Higher Education of China under Grant No. 20110032120029;the Innovation Foundation of Tianjin University

摘　　要：To achieve an optimal trade-off between video quality and energy efficiency in the uplink streaming of multi-user Scalable Video Coding (SVC) videos in relay-based Orthogonal Frequency Division Multiple Access (OFDMA) cellular networks, a cross-layer design framework that jointly selects the Transmission Policy (TP) for SVC video frames, assigns OFDMA subcarriers, and allocates power for each subcarrier is proposed. We apply the dual decomposition method to the problem, and obtain a TP selection subproblem for each SVC video adaptation and a resource allocation subproblem of Joint Subcarrier, Relay and Power Allocation (JSRPA). A second level of dual decomposition is used to divide the JSRPA problem into independent subcarrier subproblems. The proposed Crosslayer Trade-off Optimization (CTO) algorithm is sub-distributed with significantly low complexity. A performance evaluation with typical SVC video traces demonstrates that the proposed algorithm is able to converge and efficiently achieve the optimal trade-off between the video quality and energy consumption at the MSs for uplink SVC streaming.To achieve an optimal trade-off between video quality and energy efficiency in the uplink streaming of multi-user Scalable Video Coding （SVC） videos in relay-based Orthogonal Frequency Division Multiple Access （OFDMA） cellular networks, a cross-layer design framework that jointly selects the Transmission Policy （TP） for SVC video frames, assigns OFDMA subcarriers, and allocates power for each subcarrier is proposed. We apply the dual decomposition method to the problem, and obtain a TP selection subproblem for each SVC video adaptation and a resource allocation subproblem of Joint Subcarrier, Relay and Power Allocation （JSRPA）. A second level of dual decomposition is used to divide the JSRPA problem into independent subcarrier subproblems. The proposed Crosslayer Trade-off Optimization （CTO） algorithm is sub-distributed with significantly low complexity. A performance evaluation with typical SVC video traces demonstrates that the proposed algorithm is able to converge and efficiently achieve the optimal trade-off between the video quality and energy consumption at the MSs for uplink SVC streaming.

关 键 词：video streaming  cross-layer tradeoff optimization  dual decomposition  scalable video coding  OFDMA  relay 

分 类 号：TN919.8[电子电信—通信与信息系统]