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.
Keywords
Cite
@article{arxiv.1301.6787,
title = {Energy-Efficient Spectrum Sharing in Relay-Assisted Cognitive Radio Systems},
author = {Mariem Mhiri and Karim Cheikhrouhou and Abdelaziz Samet and François Mériaux and Samson Lasaulce},
journal= {arXiv preprint arXiv:1301.6787},
year = {2013}
}
Comments
IEEE Proc. of the International Conference on Network Games, Control and Optimization (NetGCooP), Nov. 2012, Avignon, France