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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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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. |
format | Online Article Text |
id | pubmed-7374382 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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