Coordination of Energy Efficient Sensing and Transmission in Cognitive Radio Networks

Tang, W., Imran, M. A. and Tafazolli, R. (2011) Coordination of Energy Efficient Sensing and Transmission in Cognitive Radio Networks. In: Proceedings of PGNet, Liverpool, UK, 27-28 Jun 2011, ISBN 9781902560250

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To improve spectrum efficiency, cognitive radio (CR) is designed to allow unlicensed (secondary) users to utilize the licensed spectrum when it is not used by the licensed (primary) users. Because of the dynamic nature of cognitive radio network, the resource allocation targeting at best system performance becomes more and more important. In this paper, a proposal aiming at improving the energy efficiency for cognitive radio networks and at the same time keeping an optimal system performance, is provided. On one hand, the secondary users aim to accurately sense the spectrum availability which costs them in terms of energy. On the other hand higher sensing accuracy is required to minimize the interference with primary users. An optimal balance between these contradicting goals is required. In this work, we simulate the eigenvalue ratio based detector to evaluate the relation between sensing accuracy and energy consumption. A sensing-transmission structure of secondary user in CR networks is introduced and the channel access method is simulated to analyze the normalized throughput.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad
Authors: Tang, W., Imran, M. A., and Tafazolli, R.
College/School:College of Science and Engineering > School of Engineering

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