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Issue No.01 - January (2012 vol.23)
pp: 61-68
E. E. Tsiropoulou , Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
In this paper, the problem of efficient distributed power control via convex pricing of users' transmission power in the uplink of CDMA wireless networks supporting multiple services is addressed. Each user is associated with a nested utility function, which appropriately represents his degree of satisfaction in relation to the expected trade-off between his QoS-aware actual uplink throughput performance and the corresponding power consumption. Initially, a Multiservice Uplink Power Control game (MSUPC) is formulated, where each user aims selfishly at maximizing his utility-based performance under the imposed physical limitations and its unique Nash equilibrium point is determined. Then the inefficiency of MSUPC game's Nash equilibrium is proven and a usage-based convex pricing policy of the transmission power is introduced, which offers a more effective approach compared to the linear pricing schemes that have been adopted in the literature. Consequently, a Multiservice Uplink Power Control game with Convex Pricing (MSUPC-CP) is formulated and its unique Pareto optimal Nash equilibrium is determined. A distributed iterative algorithm for computing MSUPC-CP game's equilibrium is proposed, while the overall approach's efficiency is illustrated via modeling and simulation.
wireless channels, code division multiple access, distributed control, game theory, iterative methods, Pareto optimisation, power consumption, power control, quality of service, distributed iterative algorithm, distributed uplink power control, multiservice wireless networks, game theoretic approach, convex pricing, user transmission power, CDMA wireless networks, nested utility function, QoS-aware actual uplink, power consumption, multiservice uplink power control game, Pareto optimal Nash equilibrium, Games, Pricing, Power control, Nash equilibrium, Throughput, Quality of service, Interference, wireless systems., Distributed power control, multimedia services, Nash equilibrium, Pareto efficiency
E. E. Tsiropoulou, "Distributed Uplink Power Control in Multiservice Wireless Networks via a Game Theoretic Approach with Convex Pricing", IEEE Transactions on Parallel & Distributed Systems, vol.23, no. 1, pp. 61-68, January 2012, doi:10.1109/TPDS.2011.98
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