A Framework for Distributed Power Control with Partial Channel State Information

Abstract : —One of the goals of this paper is to contribute to finding distributed power control strategies which exploit, as well as possible, the information available about the global channel state; which may be local or noisy. A suited way of measuring the global efficiency of a distributed power control scheme is to use the long-term utility region. First, we provide the utility region characterization for any power control problem for which the utility takes the form under consideration, the channel state is i.i.d., and the observation structure is memoryless. Second, the corresponding theorem is exploited to construct an iterative algorithm which provides memoryless and stationary power control strategies. The performance of the proposed algorithm is assessed for energy-efficient utility functions and shown to perform much better than closest state-of-the-art solutions, with the additional advantage of being applicable even in the presence of arbitrary observation structures such as noisy channel gain estimates.
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IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, In press
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  • HAL Id : hal-01745417, version 1

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Chao Zhang, Samson Lasaulce, Achal Agrawal, Raphaël Visoz. A Framework for Distributed Power Control with Partial Channel State Information. IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, In press. 〈hal-01745417〉

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