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2010

Primary User Enters the Game: Performance of Dynamic Spectrum Leasing in Cognitive Radio Networks

9 years 11 months ago
Primary User Enters the Game: Performance of Dynamic Spectrum Leasing in Cognitive Radio Networks
Dynamic spectrum leasing (DSL) is one of the schemes proposed for dynamic spectrum sharing (DSS) in cognitive radio networks. In DSL, spectrum owners, denoted as primary users, dynamically adjust the amount of secondary interference they are willing to tolerate in response to the demand from secondary transmitters. In this correspondence we investigate how much can be gained by primary users if this limited interaction with secondary system is allowed, compared to a scheme in which the interference cap allowed by primary users is fixed a priori by a regulatory authority. To that end, we define performance metrics for both primary and secondary systems based on the theoretically achievable multiuser sum-rate of the secondary system and analyze both schemes' behavior with respect to different system parameters. This analysis shows that (i) in dynamic environments DSL based schemes may present an important advantage over other schemes with fixed interference constraints, and (ii) DSL...
Gonzalo Vazquez-Vilar, Carlos Mosquera, Sudharman
Added 22 May 2011
Updated 22 May 2011
Type Journal
Year 2010
Where TWC
Authors Gonzalo Vazquez-Vilar, Carlos Mosquera, Sudharman K. Jayaweera
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