On Spectrum Sharing and Dynamic Spectrum Allocation: MAC Layer Spectrum Sensing in Cognitive Radio Networks

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Mohamed Hamid, Abbas Mohammed, Zhe Yang
Title: On Spectrum Sharing and Dynamic Spectrum Allocation: MAC Layer Spectrum Sensing in Cognitive Radio Networks
Conference name: International Conference on Communications and Mobile Computing (CMC)
Year: 2010
ISBN: 978-1-4244-6327-5
Publisher: IEEE
City: Shenzhen
URI/DOI: 10.1109/CMC.2010.342
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Electrical Engineering (Sektionen för ingenjörsvetenskap - Avd. för elektroteknik)
School of Engineering S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/ing/
Authors e-mail: amo@bth.se, zya@bth.se
Language: English
Abstract: One of the most critical issues regarding wireless networks regulation agencies is how to manage the available electromagnetic radio spectrum in a way that satisfies the needs of the huge growing in wireless systems both economically and technically, especially with the recent crowding in the available spectrum. Hence, building cognitive radio systems supporting dynamic access to the available spectrum has appeared recently as a novel solution for the wireless system huge expansion. In this paper we investigate the MAC layer sensing schemes in cognitive radio networks, where both reactive and proactive sensing are considered. In proactive sensing the adapted and non-adapted sensing periods schemes are also assessed. The assessment of these sensing schemes has been held via two performance metrics: available spectrum utilization and idle channel search delay. Simulation results show that with proactive sensing adapted periods we achieve the best performance but with an observable overhead computational tasks to be done by the network nodes.
Subject: Telecommunications\General
Keywords: Spectrum Sensing, Cognitive Radio, Dynamic Spectrum Allocation
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