A Modified Energy Detection Algorithm Based on Primary User Activity for Cognitive Radio Networks

Gang Tao Han; Ying Qiang Ding; Xiao Min Mu; Jian Kang Zhang

doi:10.4028/www.scientific.net/AMM.548-549.1351

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549A Modified Energy Detection Algorithm Based on...

A Modified Energy Detection Algorithm Based on Primary User Activity for Cognitive Radio Networks

Abstract:

Spectrum sensing is used to identify the unused frequency bands and as such plays a key role in dynamic spectrum access. In most of the existing spectrum sensing models, the channel state of primary user is assumed unchanged within the spectrum sensing duration, which is not suitable for the channels with high activity, in which the primary user accesses or vacates from the channel frequently. In this paper, a Modified Energy Detection (MED) algorithm is proposed for this scenarios by considering the primary user activity within the spectrum sensing duration. Theory analysis and computer simulation results show that both the probability of detection and false alarm in this scenarios have been improved with our MED.

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

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1351-1354

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https://doi.org/10.4028/www.scientific.net/AMM.548-549.1351

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Online since:

April 2014

Authors:

Gang Tao Han, Ying Qiang Ding, Xiao Min Mu, Jian Kang Zhang

Keywords:

Cognitive Radio Network, Energy Detection, Primary User Activity, Spectrum Sensing

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