Multiuser multimedia communication over orthogonal frequency-division multiple access downlink systems

SUMMARYThis paper investigates the problem of multiuser multimedia communication over orthogonal frequency‐division multiple‐access downlink systems. A cross‐layer design is proposed to maximize the received video quality of all the users subject to the network resource constraint. With the optimal...

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Published inConcurrency and computation Vol. 25; no. 9; pp. 1081 - 1090
Main Authors Li, Fan, Zhang, Danyang, Wang, Minghui
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 25.06.2013
Subjects
Algorithms
Computer simulation
Lagrange dual decomposition
Mathematical models
Multimedia
Multiple access
multiuser
Networks
OFDMA
Optimization
Reproduction
resource allocation
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Summary:SUMMARYThis paper investigates the problem of multiuser multimedia communication over orthogonal frequency‐division multiple‐access downlink systems. A cross‐layer design is proposed to maximize the received video quality of all the users subject to the network resource constraint. With the optimal joint subcarrier assignment and power allocation, the proposed scheme can maximally satisfy the requirements of the packet scheduling from the higher layer. Employing the Lagrange dual decomposition method, we can obtain the global optimal solution to the optimization problem. Simulation results show that the proposed algorithm has superior performance compared with the existing alternatives. Copyright © 2012 John Wiley & Sons, Ltd.
Bibliography:ArticleID:CPE2880
National Science and Technology Major Project - No. 2012ZX03002023
istex:4DCF8AF76B4AFD884696131A7D3389B182FDABD5
ark:/67375/WNG-6R6FRKG4-F
National Natural Science Foundation of China - No. 61001095
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1532-0626
1532-0634
DOI:10.1002/cpe.2880