Computer Science – Computer Science and Game Theory
Scientific paper
2011-07-21
Computer Science
Computer Science and Game Theory
DSP 2011: 17th International Conference on Digital Signal Processing, July 2011, Corfu, Greece
Scientific paper
Frequency non-selective time-selective multiple access channels in which transmitters can freely choose their power control policy are considered. The individual objective of the transmitters is to maximize their averaged energy-efficiency. For this purpose, a transmitter has to choose a power control policy that is, a sequence of power levels adapted to the channel variations. This problem can be formulated as a stochastic game with discounting for which there exists a theorem characterizing all the equilibrium utilities (equilibrium utility region). As in its general formulation, this theorem relies on global channel state information (CSI), it is shown that some points of the utility region can be reached with individual CSI. Interestingly, time-sharing based solutions, which are usually considered for centralized policies, appear to be part of the equilibrium solutions. This analysis is illustrated by numerical results providing further insights to the problem under investigation.
Kieffer Michel
Lasaulce Samson
Mériaux François
Treust Mael Le
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