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A novel low-complexity dynamic frequency selection algorithm for cognitive radios

Bahramian, S ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1109/ISWCS.2007.4392402
  3. Publisher: 2007
  4. Abstract:
  5. In this paper, a non-cooperative distributed frequency selection algorithm is proposed for cognitive radio networks in which in addition to interference minimization, the minimization of implementation complexity and probability of interruption of secondary users are also addressed. The convergence and interference reduction property of the algorithm is also demonstrated using game theoretic concepts. In order to evaluate the performance of the algorithm, the associated optimization problem is formulated into a variant of graph colouring problem, and a centralized algorithm is also proposed as an approximation of the optimal solution. Finally, simulation results demonstrate that the proposed distributed algorithm achieves acceptable performance in comparison with earlier schemes. © 2007 IEEE
  6. Keywords:
  7. Centralized algorithms ; Cognitive radio (CR) ; Cognitive radio networks ; Convergence (mathematics) ; Distributed algorithms ; Dynamic frequency selection (DFS) ; Frequency selection ; Graph colouring ; Implementation complexity ; Interference reduction ; International symposium ; Low-complexity ; Optimal solutions ; Optimization problems ; Secondary users ; Simulation results ; Wireless communication systems ; Algorithms ; Boolean functions ; Cellular telephone systems ; Communication ; Communication systems ; Global system for mobile communications ; Mobile computing ; Optimization ; Parallel algorithms ; Radio systems ; Technical presentations ; Telecommunication ; Telecommunication systems ; Approximation algorithms
  8. Source: 4th IEEE International Symposium on Wireless Communication Systems 2007, ISWCS'07, Trondheim, 16 October 2007 through 19 October 2007 ; 2007 , Pages 558-562 ; 1424409799 (ISBN); 9781424409792 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/4392402