DocumentCode :
1393182
Title :
Spectrum sharing and power allocation in multiple-in multiple-out cognitive radio networks via pricing
Author :
Adian, Mehdi Ghamari ; Aghaeinia, Hassan
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran, Iran
Volume :
6
Issue :
16
fYear :
2012
Firstpage :
2621
Lastpage :
2629
Abstract :
In the cognitive radio (CR) networks consisting of selfish users competing for spectrum resources, the social optimum is usually not achieved at the Nash equilibrium (NE) of the power control game, since selfish users are only interested in their own benefit. In this study with the aim of improving the NE efficiency, the authors extend the pricing concept to a multi-channel multiple-in multiple-out (MIMO) CR scenario and propose two iterative algorithms for power control and channel allocation in such systems. Specially, the authors consider both linear and non-linear pricing methods and derive the optimal pricing factor for both scenarios and prove the existence and uniqueness of the NE. Simulation results prove the outstanding performance of the proposed MIMO cognitive system considering price-based power control over the non-price-based MIMO cognitive systems.
Keywords :
MIMO communication; cognitive radio; game theory; power control; pricing; radio spectrum management; CR networks; NE; Nash equilibrium; linear pricing methods; multichannel MIMO cognitive system; multiple-in multiple-out cognitive radio networks; nonlinear pricing methods; optimal pricing factor; power allocation; power control game; selfish users; spectrum resources; spectrum sharing;
fLanguage :
English
Journal_Title :
Communications, IET
Publisher :
iet
ISSN :
1751-8628
Type :
jour
DOI :
10.1049/iet-com.2011.0489
Filename :
6400465
Link To Document :
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