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2010
IEEE

Near-Optimal Power Control in Wireless Networks: A Potential Game Approach

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Near-Optimal Power Control in Wireless Networks: A Potential Game Approach
—We study power control in a multi-cell CDMA wireless system whereby self-interested users share a common spectrum and interfere with each other. Our objective is to design a power control scheme that achieves a (near) optimal power allocation with respect to any predetermined network objective (such as the maximization of sum-rate, or some fairness criterion). To obtain this, we introduce the potentialgame approach that relies on approximating the underlying noncooperative game with a “close” potential game, for which prices that induce an optimal power allocation can be derived. We use the proximity of the original game with the approximate game to establish through Lyapunov-based analysis that natural userupdate schemes (applied to the original game) converge within a neighborhood of the desired operating point, thereby inducing near-optimal performance in a dynamical sense. Additionally, we demonstrate through simulations that the actual performance can in practice be very cl...
Ozan Candogan, Ishai Menache, Asuman E. Ozdaglar,
Added 28 Jan 2011
Updated 28 Jan 2011
Type Journal
Year 2010
Where INFOCOM
Authors Ozan Candogan, Ishai Menache, Asuman E. Ozdaglar, Pablo A. Parrilo
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