Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints
Vehicular communication has been envisioned to support a myriad of essential fifth-generation and beyond use-cases. However, the increasing proliferation of smart and intelligent vehicles has generated a lot of design and infrastructure challenges. Of particular interest are the problems of spectrum...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/21/7160 |
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| author | Suneel Yadav Anshul Pandey Dinh-Thuan Do Byung Moo Lee Adão Silva |
| author_facet | Suneel Yadav Anshul Pandey Dinh-Thuan Do Byung Moo Lee Adão Silva |
| author_sort | Suneel Yadav |
| collection | DOAJ |
| description | Vehicular communication has been envisioned to support a myriad of essential fifth-generation and beyond use-cases. However, the increasing proliferation of smart and intelligent vehicles has generated a lot of design and infrastructure challenges. Of particular interest are the problems of spectrum scarcity and communication security. Consequently, we considered a cognitive radio-enabled vehicular network framework for accessing additional radio spectrum and exploit physical layer security for secure communications. In particular, we investigated the secrecy performance of a cognitive radio vehicular network, where all the nodes in the network are moving vehicles and the channels between them are modeled as double-Rayleigh fading. Furthermore, adopting an underlay approach, the communication between secondary nodes can be performed by employing two interference constraint strategies at the primary receiver; (1) Strategy I: the secondary transmitter power is constrained by the interference threshold of the primary receiver, and (2) Strategy II: the secondary transmitter power is constrained by both the interference threshold of the primary receiver and the maximum transmit power of the secondary network. Under the considered strategies, we derive the exact secrecy outage probability (SOP) and ergodic secrecy capacity (ESC) expressions over double-Rayleigh fading. Moreover, by analyzing the asymptotic SOP behavior, we show that a full secrecy diversity of 1 can be achieved, when the average channel gain of the main link goes to infinity with a fixed average wiretap channel gain. From the ESC analysis, it is revealed that the ESC follows a scaling law of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Θ</mo><mfenced separators="" open="(" close=")"><mo form="prefix">ln</mo><mfenced open="(" close=")"><mfrac><msubsup><mo>Ω</mo><mrow><mi>m</mi></mrow><mn>2</mn></msubsup><msubsup><mo>Ω</mo><mrow><mi>e</mi></mrow><mn>2</mn></msubsup></mfrac></mfenced></mfenced></mrow></semantics></math></inline-formula> for large <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>m</mi></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>e</mi></msub></semantics></math></inline-formula>, where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>m</mi></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>e</mi></msub></semantics></math></inline-formula> are the average channel gains of the main link and wiretap link. The numerical and simulation results verify our analytical findings. |
| first_indexed | 2024-03-10T05:52:33Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T05:52:33Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0b6000ba4d5647279b7a1d39f17471142023-11-22T21:37:29ZengMDPI AGSensors1424-82202021-10-012121716010.3390/s21217160Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing ConstraintsSuneel Yadav0Anshul Pandey1Dinh-Thuan Do2Byung Moo Lee3Adão Silva4Department of Electronics and Communication Engineering, Indian Institute of Information Technology Allahabad, Prayagraj 211015, IndiaSecure Systems Research Center, Technology Innovation Institute, Abu Dhabi 9639, United Arab EmiratesDepartment of Computer Science and Information Engineering, College of Information and Electrical Engineering, Asia University, 500 Lioufeng Rd., Wufeng, Taichung 41354, TaiwanDepartment of of Intelligent Mechatronics Engineering, and Convergence Engineering for Intelligent Drone, Sejong University, Seoul 05006, KoreaInstituto de Telecomunicações (IT) and Departamento de Eletrónica, Telecomunicações e Informática (DETI), University of Aveiro, 3810-193 Aveiro, PortugalVehicular communication has been envisioned to support a myriad of essential fifth-generation and beyond use-cases. However, the increasing proliferation of smart and intelligent vehicles has generated a lot of design and infrastructure challenges. Of particular interest are the problems of spectrum scarcity and communication security. Consequently, we considered a cognitive radio-enabled vehicular network framework for accessing additional radio spectrum and exploit physical layer security for secure communications. In particular, we investigated the secrecy performance of a cognitive radio vehicular network, where all the nodes in the network are moving vehicles and the channels between them are modeled as double-Rayleigh fading. Furthermore, adopting an underlay approach, the communication between secondary nodes can be performed by employing two interference constraint strategies at the primary receiver; (1) Strategy I: the secondary transmitter power is constrained by the interference threshold of the primary receiver, and (2) Strategy II: the secondary transmitter power is constrained by both the interference threshold of the primary receiver and the maximum transmit power of the secondary network. Under the considered strategies, we derive the exact secrecy outage probability (SOP) and ergodic secrecy capacity (ESC) expressions over double-Rayleigh fading. Moreover, by analyzing the asymptotic SOP behavior, we show that a full secrecy diversity of 1 can be achieved, when the average channel gain of the main link goes to infinity with a fixed average wiretap channel gain. From the ESC analysis, it is revealed that the ESC follows a scaling law of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>Θ</mo><mfenced separators="" open="(" close=")"><mo form="prefix">ln</mo><mfenced open="(" close=")"><mfrac><msubsup><mo>Ω</mo><mrow><mi>m</mi></mrow><mn>2</mn></msubsup><msubsup><mo>Ω</mo><mrow><mi>e</mi></mrow><mn>2</mn></msubsup></mfrac></mfenced></mfenced></mrow></semantics></math></inline-formula> for large <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>m</mi></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>e</mi></msub></semantics></math></inline-formula>, where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>m</mi></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mo>Ω</mo><mi>e</mi></msub></semantics></math></inline-formula> are the average channel gains of the main link and wiretap link. The numerical and simulation results verify our analytical findings.https://www.mdpi.com/1424-8220/21/21/7160physical-layer securitycognitive radio vehicular networks (CRVNs)secrecy outage probability (SOP)ergodic secrecy capacity (ESC)double-Rayleigh fading channels |
| spellingShingle | Suneel Yadav Anshul Pandey Dinh-Thuan Do Byung Moo Lee Adão Silva Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints Sensors physical-layer security cognitive radio vehicular networks (CRVNs) secrecy outage probability (SOP) ergodic secrecy capacity (ESC) double-Rayleigh fading channels |
| title | Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints |
| title_full | Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints |
| title_fullStr | Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints |
| title_full_unstemmed | Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints |
| title_short | Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints |
| title_sort | secure cognitive radio enabled vehicular communications under spectrum sharing constraints |
| topic | physical-layer security cognitive radio vehicular networks (CRVNs) secrecy outage probability (SOP) ergodic secrecy capacity (ESC) double-Rayleigh fading channels |
| url | https://www.mdpi.com/1424-8220/21/21/7160 |
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