Distributed power control in sensor networks: A game theoretic approach

    Authors

    S. Sengupta;M. Chatterjee

    Comments

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    Keywords

    CELLULAR RADIO SYSTEMS; Computer Science, Theory & Methods

    Abstract

    In wireless sensor networks, where energy of the sensor nodes are finite, power control is an important issue to consider. In this paper, we present a game-theoretic approach to solve the power control problem in CDMA based distributed sensor networks. A non-cooperative game is formulated and the existence of Nash equilibrium is studied for the sensor nodes operating under incomplete information. With the help of this equilibrium, we devise a distributed algorithm for optimal power control and prove that the system is power stable if the nodes comply with certain transmission thresholds. We show that even in the distributed non-cooperative scenario, it is in the best interest of the nodes to remain within these thresholds. The power level at which a node should transmit, to maximize its utility, is also evaluated. Numerical results prove that with the proposed algorithm, the sensor nodes are able to achieve best possible payoff by consuming less power, resulting in extended network lifetime.

    Journal Title

    Distributed Computing - Iwdc 2004, Proceedings

    Volume

    3326

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    508

    Last Page

    519

    WOS Identifier

    WOS:000227186700055

    ISSN

    0302-9743; 3-540-24076-4

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