Power Control in Multiuser Mulicarrier Wireless Data Networks

Details Power Control in Multiuser Mulicarrier Wireless Data Networks Power Control in Multiuser Mulicarrier Wireless Data Networks

2012-01-31

arxiv.org/abs/1201.6499v1

Computer Science

Information Theory

11 pages, 1 figure. arXiv admin note: text overlap with arXiv:some 0806.1565 by other authors

Scientific paper

A game-theoretic model is presented to study the management of transmission power in a wireless data network. We propose a power game for a multiuser multicarrier setting where all the users are assumed to transmit at equal rate. At equilibrium, each user is shown to transmit over a single carrier, as in [Mehskati et al., 2006]. We derive the necessary conditions on the path gains when the Nash equilibrium point exists. We further prove the existence of the Nash equilibrium point using the concept of locally gross direction preserving map. A greedy algorithm is proposed and its correctness is established, where each user acts selfishly to achieve the Nash equilibrium point.

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