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Joint Rate and Power Allocation in Spectrum Sharing Networks with Balanced QoS Provisioning and Power Saving

Authors Wu, Yuan
Tsang, Danny H K
Issue Date 2008
Source QShine 2008 , Hong Kong, August 2008
Summary In this paper, we study the joint rate and multi-channel power allocations in spectrum sharing networks (SSNs) with balanced QoS provisioning and power saving. We formulate this cross layer problem as a non-cooperative game G<sub>JRPA</sub> in which each user aims to achieve its target data rate as exactly as possible and minimize its power consumption at the same time. We investigate the properties of Nash equilibrium (N.E.) for G<sub>JRPA</sub>, including its existence, and properties of QoS provisioning as well as power saving. With the decomposition technique, we propose a distributed algorithm to find the N.E. for G<sub>JRPA</sub> from any feasible initialization and provide a sufficient condition for its convergence. Simulation results are presented to show the validity of our proposed algorithm. Performance tradeoff between QoS provisioning and power saving are investigated via tuning the weighting factors. Besides, advantages of our G<sub>JRPA</sub> over conventional iterative water filling (IWF) are also analyzed.
Rights © ACM, 2008. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Proceedings of the 5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, 28-31 July 2008, Hong Kong, article 31.
Language English
Format Conference paper
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