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Heuristic based dynamic spectrum assignment in cognitive radio network

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3 Author(s)
Liu, Zhiyong ; School of Computing, Queen''s University, Kingston, Ontario, K7L 3N6 Canada ; Nasser, Nidal ; Hassanein, Hossam S.

Cognitive radio networks (CRNs) significantly improve spectrum utilization efficiency by allowing secondary users (SUs) to opportunistically share unused spectrum bands with primary users (PUs). In this paper, we present a spectrum assignment model and propose a genetic algorithm (GA) and a heuristic algorithm to determine the proper spectrum assignment, which optimizes the SUs' reward and the network operator's revenue while satisfying capacity constraints, interference constraints and rate requirement constraints. We show that both algorithms greatly outperform the random assignment approach.

Published in:

Computing, Management and Telecommunications (ComManTel), 2013 International Conference on

Date of Conference:

21-24 Jan. 2013