标题:Optimizing cooperative video streaming in wireless networks
作者:Guan, Zhangyu ;Melodia, Tommaso ;Yuan, Dongfeng
通讯作者:Guan, Z
作者机构:[Guan, Zhangyu ;Melodia, Tommaso ] Department of Electrical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, Unite 更多
会议名称:2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011
会议日期:27 June 2011 through 30 June 2011
来源:2011 8th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, SECON 2011
出版年:2011
页码:503-511
DOI:10.1109/SAHCN.2011.5984936
摘要:Physical-layer cooperation allows leveraging the spatial diversity of the wireless channel without requiring multiple antennas on a single device. However, most research in this field focuses on optimizing physical layer metrics, with little consideration for network-wide and application-specific performance measures. This paper studies cross-layer design techniques for video streaming over cooperative networks. The problem of joint video rate control, relay selection, and power allocation is formulated as a mixed-integer nonlinear problem, with the objective of maximizing the sum peak signal-to-noise ratio (PSNR) of a set of concurrent video sessions. An asynchronous, distributed and localized low-complexity algorithm is designed, based on the iterative solution of convex optimization problems at each individual node. In addition, a global-optimization centralized algorithm based on convex relaxations of non-convex constraints is also proposed as performance benchmark. The distributed algorithm is shown to achieve performance within a few percentage points of the optimal solution. It is also shown that cooperative relaying allows nodes to reduce the overall power consumption without leading to a perceivable decrease in video quality. © 2011 IEEE.
收录类别:EI;SCOPUS
Scopus被引频次:10
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052799141&doi=10.1109%2fSAHCN.2011.5984936&partnerID=40&md5=176336b7826707eba93a87f92e1fb43b
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