Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems

Abstract : This work characterizes an important solution concept of a relevant spectrum game. Two energy-efficient sources communicating with their respective destination compete for an extra channel brought by a relay charging the used bandwidth through a pricing mechanism. This game is shown to possess a unique Nash bargaining solution, exploiting a time-sharing argument. This Pareto-efficient solution can be implemented by using a distributed optimization algorithm for which each transmitter uses a simple gradient-type algorithm and alternately updates its spectrum sharing policy. Typical numerical results show to what extent spectral efficiency can be improved in a system involving selfish energy-efficient sources.
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Communication dans un congrès
the International Conference on Network Games, Control and Optimization (NetGCooP), Nov 2012, Avignon, France. pp.1-6, 2012
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Mariem Mhiri, Karim Cheikhrouhou, Abdelaziz Samet, François Mériaux, Samson Lasaulce. Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems. the International Conference on Network Games, Control and Optimization (NetGCooP), Nov 2012, Avignon, France. pp.1-6, 2012. 〈hal-00782036〉

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