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ThinkMind // COCORA 2011, The First International Conference on Advances in Cognitive Radio // View article cocora_2011_1_30_60039


A Routing Strategy for Cognitive Radio Networks Using Fuzzy Logic Decisions

Authors:
Ali El Masri
Naceur Malouch
Hicham Khalife

Keywords: Cognitive Radio Networks; Routing; Fuzzy Logic; Spectrum Selection

Abstract:
We design a novel routing procedure for multihop cognitive radio networks composed of adequate metrics and a strategy to combine these metrics. In cognitive radio networks, channels are not permanently available. The objective is then to increase channel availability when the routes are established. Two global metrics are defined. The stability metric evaluates the utilization efficiency of channels by capturing their sporadic availability to cognitive users. The predicted power metric estimates the spectrum capabilities for the on-going transmission without interrupting licensed users. We use fuzzy logic theory to compute and combine these metrics in order to make suitable routing decisions. Numerical analysis and simulation results show that our procedure is able to find the route that goes through the nodes with better channel conditions. Fuzzy logic seems then to be an appropriate technique to decide the routes to establish in multihop cognitive radio networks.

Pages: 13 to 18

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-131-1

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011

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