WSEAS Transactions on Communications
Print ISSN: 1109-2742, E-ISSN: 2224-2864
Volume 13, 2014
An Efficient Spectrum Allocation Mechanism for Cognitive Radio Networks
Authors: , ,
Abstract: Cognitive Radio (CR) is viewed as a novel approach for improving the utilization of a precious natural resource: the radio electromagnetic spectrum. CRs can efficiently share the available spectrum both in licensed and unlicensed bands with the neighboring devices. The efficient use of available spectrum is becoming more and more critical with increasing demand and usage of the radio spectrum. To this extend, in this paper we propose an approach to solve the spectrum allocation/sharing problem using cooperation spectrum management method based on coalition that enables CR devices to share the unutilized spectrum efficiently. The key aspect of our design is the deployment of Multi-Agent System (MAS) where agents are deployed on each device and are grouped into coalitions. The powerful node in each coalition is selected to be a leader which handles allocation requests received from CRs of the same coalition. All these coalitions cooperate in order to have a better use of the spectrum. Our simulation results show that the proposed solution provide an intelligent management and achieves good performance in terms of spectrum access/sharing, within the span of few message.
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Keywords: Cognitive Radio, Multi-Agent Systems, Cooperation, Spectrum allocation/sharing, Coalition, Artificial intelligence
Pages: 534-547
WSEAS Transactions on Communications, ISSN / E-ISSN: 1109-2742 / 2224-2864, Volume 13, 2014, Art. #59