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A New SIR-Based Sigmoid Power Control Game in Cognitive Radio Networks
- Source :
- PLoS ONE, PLoS ONE, Vol 9, Iss 10, p e109077 (2014)
- Publication Year :
- 2014
- Publisher :
- Public Library of Science (PLoS), 2014.
-
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.
- Subjects :
- Computer and Information Sciences
Mathematical optimization
Radio Waves
Computer science
lcsh:Medicine
Signal-To-Noise Ratio
Reduction (complexity)
symbols.namesake
Electronics Engineering
Game Theory
Control theory
Computer Simulation
lcsh:Science
Computerized Simulations
Numerical Analysis
Multidisciplinary
Applied Mathematics
Quality of service
lcsh:R
Numerical Analysis, Computer-Assisted
Models, Theoretical
Computing Methods
Cognitive radio
Nash equilibrium
Signal Processing
Physical Sciences
symbols
Engineering and Technology
lcsh:Q
Information Technology
Game theory
Algorithms
Electrical Engineering
Mathematics
Research Article
Computer Modeling
Power control
Communication channel
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....de820bd4fe22251f2325dbaaceaae847