Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks
Energy detection has been adopted as an alternative spectrum sensing method for cognitive radios due to its low computational complexity and not requiring a priori information about the signal to be detected. However, noise uncertainty and hidden terminal problem make energy detector practically cha...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Iran Telecom Research Center
2011-09-01
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| Series: | International Journal of Information and Communication Technology Research |
| Subjects: | |
| Online Access: | http://ijict.itrc.ac.ir/article-1-205-en.html |
| _version_ | 1811169302842179584 |
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| author | Vahid Jamali Kooshkghazi Nima Reisi Mahmoud Ahmadian Soheil Salari |
| author_facet | Vahid Jamali Kooshkghazi Nima Reisi Mahmoud Ahmadian Soheil Salari |
| author_sort | Vahid Jamali Kooshkghazi |
| collection | DOAJ |
| description | Energy detection has been adopted as an alternative spectrum sensing method for cognitive radios due to its low computational complexity and not requiring a priori information about the signal to be detected. However, noise uncertainty and hidden terminal problem make energy detector practically challenging specially in low signal-to noise ratio (SNR) regime. Collaboration among multiple cognitive radios has been recognized as a practical strategy to improve the reliability of spectrum sensing. In this paper, a cooperative spectrum sensing framework is proposed to blindly determine the occupancy of a wideband spectrum. Specifically, contrary to conventional energy detector, the proposed method does not require any knowledge of noise variance to detect the presence of primary signals. Moreover, diversity achieved by cooperation enables the framework to maintain a reasonable performance even in low SNR values. Simulation results confirm the effectiveness of our proposed method in improving both the probabilities of detection and false alarm. |
| first_indexed | 2024-04-10T16:41:11Z |
| format | Article |
| id | doaj.art-8b482d995093410b808283a70cecc4cf |
| institution | Directory Open Access Journal |
| issn | 2251-6107 2783-4425 |
| language | English |
| last_indexed | 2024-04-10T16:41:11Z |
| publishDate | 2011-09-01 |
| publisher | Iran Telecom Research Center |
| record_format | Article |
| series | International Journal of Information and Communication Technology Research |
| spelling | doaj.art-8b482d995093410b808283a70cecc4cf2023-02-08T07:30:45ZengIran Telecom Research CenterInternational Journal of Information and Communication Technology Research2251-61072783-44252011-09-01331118Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio NetworksVahid Jamali Kooshkghazi0Nima Reisi1Mahmoud Ahmadian2Soheil Salari3 Energy detection has been adopted as an alternative spectrum sensing method for cognitive radios due to its low computational complexity and not requiring a priori information about the signal to be detected. However, noise uncertainty and hidden terminal problem make energy detector practically challenging specially in low signal-to noise ratio (SNR) regime. Collaboration among multiple cognitive radios has been recognized as a practical strategy to improve the reliability of spectrum sensing. In this paper, a cooperative spectrum sensing framework is proposed to blindly determine the occupancy of a wideband spectrum. Specifically, contrary to conventional energy detector, the proposed method does not require any knowledge of noise variance to detect the presence of primary signals. Moreover, diversity achieved by cooperation enables the framework to maintain a reasonable performance even in low SNR values. Simulation results confirm the effectiveness of our proposed method in improving both the probabilities of detection and false alarm.http://ijict.itrc.ac.ir/article-1-205-en.htmlcognitive radiocooperative spectrum sensingenergy detectiongeneralized bayesian estimator |
| spellingShingle | Vahid Jamali Kooshkghazi Nima Reisi Mahmoud Ahmadian Soheil Salari Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks International Journal of Information and Communication Technology Research cognitive radio cooperative spectrum sensing energy detection generalized bayesian estimator |
| title | Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks |
| title_full | Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks |
| title_fullStr | Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks |
| title_full_unstemmed | Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks |
| title_short | Bayesian-Based Cooperative Framework for Spectrum Sensing in Cognitive Radio Networks |
| title_sort | bayesian based cooperative framework for spectrum sensing in cognitive radio networks |
| topic | cognitive radio cooperative spectrum sensing energy detection generalized bayesian estimator |
| url | http://ijict.itrc.ac.ir/article-1-205-en.html |
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