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Cooperative linear precoding for spectrum sharing in multi-user wireless systems: game theoretic approach Open Access


Other title
spectrum sharing
linear precoding
multi-user systems
Nash bargaining
game theory
Type of item
Degree grantor
University of Alberta
Author or creator
Gao, Jie
Supervisor and department
Vorobyov, Sergiy A. (Electrical and Computer Engineering)
Jiang, Hai (Electrical and Computer Engineering)
Examining committee member and department
Zhao, H. Vicky (Electrical and Computer Engineering)
Poliquin, René (Mathematical and Statistical Sciences)
Department of Electrical and Computer Engineering

Date accepted
Graduation date
Master of Science
Degree level
Future wireless communications expect to experience a spectrum shortage problem. One practical solution is spectrum sharing. This thesis studies precoding strategies to allocate communication resources for spectrum sharing in multi-user wireless systems from a game-theoretic perspective. The approaches for the precoding games are developed under different constraints. It is shown that the precoding game with spectral mask constraints can be formulated as a convex optimization problem and a dual decomposition based algorithm can be exploited to solve it. However, the problem is non-convex if users also have total power constraints. This study shows that an efficient sub-optimal solution can be derived by allocating the bottleneck resource in the system. The sub-optimal solution is proved to be efficient and can even achieve an identical performance to that of the optimal solution in certain cases, but with significantly reduced complexity.
License granted by Jie Gao ( on 2009-08-28T05:32:28Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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