Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity
Cognitive radio (CR) is a promising technology which enables the secondary user (SU) to sense and detect the presence or absence of the primary user (PU) in the frequency band of interest. Therefore, high detection probability is needed to ensure that primary user is adequately protected, while low...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9180312/ |
| _version_ | 1818663219911196672 |
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| author | Amor Nafkha |
| author_facet | Amor Nafkha |
| author_sort | Amor Nafkha |
| collection | DOAJ |
| description | Cognitive radio (CR) is a promising technology which enables the secondary user (SU) to sense and detect the presence or absence of the primary user (PU) in the frequency band of interest. Therefore, high detection probability is needed to ensure that primary user is adequately protected, while low false-alarm probability provides the opportunity of using free channel and a better throughput performance of secondary user. Most of the studies on spectrum sensing techniques were conducted assuming a perfect synchronization between the secondary and the primary users. However, in practice, the synchronous assumption is very hard to satisfy in the context of real cognitive radio networks environment. In this paper, we present a theoretical formulation of the standard condition number (SCN) based spectrum sensing technique under an asynchronous cognitive radio networks. We assume the case where the primary users generate asynchronous slotted traffic. The standard condition number distributions under null and alternative hypotheses are derived where the secondary user is equipped with two receive antennas. Under asynchronous primary user traffic, we establish the existence of a lower limit of the false-alarm probability below which we are unable to derive a decision threshold for the SCN-based detector. |
| first_indexed | 2024-12-17T05:13:23Z |
| format | Article |
| id | doaj.art-6ca12cd802294e7690a4e59fddaa0c3e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-17T05:13:23Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-6ca12cd802294e7690a4e59fddaa0c3e2022-12-21T22:02:11ZengIEEEIEEE Access2169-35362020-01-01815923415924310.1109/ACCESS.2020.30205009180312Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User ActivityAmor Nafkha0https://orcid.org/0000-0002-1164-7163SCEE/IETR, CentraleSupélec, Cesson Sévigné, FranceCognitive radio (CR) is a promising technology which enables the secondary user (SU) to sense and detect the presence or absence of the primary user (PU) in the frequency band of interest. Therefore, high detection probability is needed to ensure that primary user is adequately protected, while low false-alarm probability provides the opportunity of using free channel and a better throughput performance of secondary user. Most of the studies on spectrum sensing techniques were conducted assuming a perfect synchronization between the secondary and the primary users. However, in practice, the synchronous assumption is very hard to satisfy in the context of real cognitive radio networks environment. In this paper, we present a theoretical formulation of the standard condition number (SCN) based spectrum sensing technique under an asynchronous cognitive radio networks. We assume the case where the primary users generate asynchronous slotted traffic. The standard condition number distributions under null and alternative hypotheses are derived where the secondary user is equipped with two receive antennas. Under asynchronous primary user traffic, we establish the existence of a lower limit of the false-alarm probability below which we are unable to derive a decision threshold for the SCN-based detector.https://ieeexplore.ieee.org/document/9180312/Spectrum sensingMarkov processstandard condition numberdetection probabilityfalse-alarm probabilityasynchronous/synchronous traffic |
| spellingShingle | Amor Nafkha Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity IEEE Access Spectrum sensing Markov process standard condition number detection probability false-alarm probability asynchronous/synchronous traffic |
| title | Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity |
| title_full | Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity |
| title_fullStr | Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity |
| title_full_unstemmed | Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity |
| title_short | Standard Condition Number Based Spectrum Sensing Under Asynchronous Primary User Activity |
| title_sort | standard condition number based spectrum sensing under asynchronous primary user activity |
| topic | Spectrum sensing Markov process standard condition number detection probability false-alarm probability asynchronous/synchronous traffic |
| url | https://ieeexplore.ieee.org/document/9180312/ |
| work_keys_str_mv | AT amornafkha standardconditionnumberbasedspectrumsensingunderasynchronousprimaryuseractivity |