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Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems

Implementation of dynamic spectrum access (DSA) in cognitive radio (CR) systems requires the unlicensed secondary users (SU) to implement spectrum sensing to monitor the activity of the licensed primary users (PU). Energy detection (ED) is one of the most widely used methods for spectrum sensing in...

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Autores principales: Martian, Alexandru, Al Sammarraie, Mahmood Jalal Ahmad, Vlădeanu, Călin, Popescu, Dimitrie C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7374382/
https://www.ncbi.nlm.nih.gov/pubmed/32605003
http://dx.doi.org/10.3390/s20133614
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author Martian, Alexandru
Al Sammarraie, Mahmood Jalal Ahmad
Vlădeanu, Călin
Popescu, Dimitrie C.
author_facet Martian, Alexandru
Al Sammarraie, Mahmood Jalal Ahmad
Vlădeanu, Călin
Popescu, Dimitrie C.
author_sort Martian, Alexandru
collection PubMed
description Implementation of dynamic spectrum access (DSA) in cognitive radio (CR) systems requires the unlicensed secondary users (SU) to implement spectrum sensing to monitor the activity of the licensed primary users (PU). Energy detection (ED) is one of the most widely used methods for spectrum sensing in CR systems, and in this paper we present a novel ED algorithm with an adaptive sensing threshold. The three-event ED (3EED) algorithm for spectrum sensing is considered for which an accurate approximation of the optimal decision threshold that minimizes the decision error probability (DEP) is found using Newton’s method with forced convergence in one iteration. The proposed algorithm is analyzed and illustrated with numerical results obtained from simulations that closely match the theoretical results and show that it outperforms the conventional ED (CED) algorithm for spectrum sensing.
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spelling pubmed-73743822020-08-06 Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems Martian, Alexandru Al Sammarraie, Mahmood Jalal Ahmad Vlădeanu, Călin Popescu, Dimitrie C. Sensors (Basel) Letter Implementation of dynamic spectrum access (DSA) in cognitive radio (CR) systems requires the unlicensed secondary users (SU) to implement spectrum sensing to monitor the activity of the licensed primary users (PU). Energy detection (ED) is one of the most widely used methods for spectrum sensing in CR systems, and in this paper we present a novel ED algorithm with an adaptive sensing threshold. The three-event ED (3EED) algorithm for spectrum sensing is considered for which an accurate approximation of the optimal decision threshold that minimizes the decision error probability (DEP) is found using Newton’s method with forced convergence in one iteration. The proposed algorithm is analyzed and illustrated with numerical results obtained from simulations that closely match the theoretical results and show that it outperforms the conventional ED (CED) algorithm for spectrum sensing. MDPI 2020-06-27 /pmc/articles/PMC7374382/ /pubmed/32605003 http://dx.doi.org/10.3390/s20133614 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Letter
Martian, Alexandru
Al Sammarraie, Mahmood Jalal Ahmad
Vlădeanu, Călin
Popescu, Dimitrie C.
Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title_full Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title_fullStr Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title_full_unstemmed Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title_short Three-Event Energy Detection with Adaptive Threshold for Spectrum Sensing in Cognitive Radio Systems
title_sort three-event energy detection with adaptive threshold for spectrum sensing in cognitive radio systems
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7374382/
https://www.ncbi.nlm.nih.gov/pubmed/32605003
http://dx.doi.org/10.3390/s20133614
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