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Joint power control and pricing for underlay relay-based cognitive radio networks

Louni, A ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1109/ISWCS.2011.6125361
  3. Publisher: 2011
  4. Abstract:
  5. One of the most important issues in cognitive radio networks is to guarantee quality of service (QoS) constraints for primary users. In this paper, a relay-based cognitive radio network is considered in which secondary users compete in a selfish manner to use a relay to improve their utility function, while maintaining interference at the primary receiver to be lower than a certain threshold level. This problem is modeled as a non-cooperative game and by using a proper pricing function in the definition of the utility function, it is shown that despite the selfish behavior of the users, Nash equilibrium (NE) with sub-optimum property is achieved. A distributed and novel algorithm to update joint power and pricing is also proposed. Furthermore, a set of conditions for convergence of the algorithm is provided. Finally, performance of the proposed algorithm in terms of various system parameters is studied through simulations
  6. Keywords:
  7. Cognitive radio network ; Joint power ; Joint power control ; Nash Equilibrium ; Noncooperative game ; Novel algorithm ; Pricing function ; Quality of Service constraints ; Threshold levels ; Utility functions ; Algorithms ; Game theory ; Global system for mobile communications ; Quality of service ; Radio systems
  8. Source: Proceedings of the International Symposium on Wireless Communication Systems, 6 November 2011 through 9 November 2011 ; November , 2011 , Pages 557-561 ; 21540217 (ISSN) ; 9781612844022 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6125361