PAPR Variations on Dynamic Spectrum Access in Cognitive Radio Systems

Hussain, S. , Louet, Y. and Palicot, J. (2009) PAPR Variations on Dynamic Spectrum Access in Cognitive Radio Systems. In: 2nd International Workshop on Cognitive Radio and Advanced Spectrum Management, 2009 (CogART 2009), Aalborg, Denmark, 18-20 May 2009, pp. 110-115. ISBN 9781424445820 (doi: 10.1109/COGART.2009.5167244)

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SoftWare radio (SWR) is an enabling technology for cognitive radio (CR) systems which promises to (de) modulate any signal, at any frequency. SWR signal, therefore, is composed of different standard's signals and this combination leads to high temporal fluctuations and thus SWR signal inherits high peak to average power ratio (PAPR). Non-linear analogue components (amplifiers, converters etc.) cause distortions for high PAPR signals which result in system performance degradation. Usually PAPR problem is addressed in time domain while this paper presents frequency domain interpretation of PAPR which is more appropriate in CR dynamic spectrum access context. A new PAPR formulation is presented which depends only upon spectral values of the signal thus associates spectrum with PAPR. As a result this vision assists in spectrum access for CR systems by providing PAPR metric information related to any available bandwidth. Consequently, bandwidth allocation in a spectrum access scenario under PAPR constraint is simplified.

Item Type:Conference Proceedings
Glasgow Author(s) Enlighten ID:Hussain, Dr Sajjad
Authors: Hussain, S., Louet, Y., and Palicot, J.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering

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