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A New SIR-Based Sigmoid Power Control Game in Cognitive Radio Networks

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  • Yousef Ali Al-Gumaei
  • Kamarul Ariffin Noordin
  • Ahmed Wasif Reza
  • Kaharudin Dimyati

Abstract

Interference resulting from Cognitive Radios (CRs) is the most important aspect of cognitive radio networks that leads to degradation in Quality of Service (QoS) in both primary and CR systems. Power control is one of the efficient techniques that can be used to reduce interference and satisfy the Signal-to-Interference Ratio (SIR) constraint among CRs. This paper proposes a new distributed power control algorithm based on game theory approach in cognitive radio networks. The proposal focuses on the channel status of cognitive radio users to improve system performance. A new cost function for SIR-based power control via a sigmoid weighting factor is introduced. The existence of Nash Equilibrium and convergence of the algorithm are also proved. The advantage of the proposed algorithm is the possibility to utilize and implement it in a distributed manner. Simulation results show considerable savings on Nash Equilibrium power compared to relevant algorithms while reduction in achieved SIR is insignificant.

Suggested Citation

  • Yousef Ali Al-Gumaei & Kamarul Ariffin Noordin & Ahmed Wasif Reza & Kaharudin Dimyati, 2014. "A New SIR-Based Sigmoid Power Control Game in Cognitive Radio Networks," PLOS ONE, Public Library of Science, vol. 9(10), pages 1-10, October.
    • Handle: RePEc:plo:pone00:0109077
    DOI: 10.1371/journal.pone.0109077
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    Cited by:

    1. Gengfa Fang & Mehmet A Orgun & Rajan Shankaran & Eryk Dutkiewicz & Guanglou Zheng, 2016. "Truthful Channel Sharing for Self Coexistence of Overlapping Medical Body Area Networks," PLOS ONE, Public Library of Science, vol. 11(2), pages 1-19, February.
    2. Yousef Ali Al-Gumaei & Kamarul Ariffin Noordin & Ahmed Wasif Reza & Kaharudin Dimyati, 2015. "A Novel Utility Function for Energy-Efficient Power Control Game in Cognitive Radio Networks," PLOS ONE, Public Library of Science, vol. 10(8), pages 1-21, August.

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