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arXiv · 1301.6787

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

Mariem Mhiri·Karim Cheikhrouhou·Abdelaziz Samet·François Mériaux·Samson Lasaulce
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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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Mariem Mhiri, Karim Cheikhrouhou, Abdelaziz Samet, François Mériaux, Samson Lasaulce. 2013-01-28. Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems. https://arxiv.org/abs/1301.6787

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