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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Autores principales:	Suneel Yadav, Anshul Pandey, Dinh-Thuan Do, Byung Moo Lee, Adão Silva
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	physical-layer security cognitive radio vehicular networks (CRVNs) secrecy outage probability (SOP) ergodic secrecy capacity (ESC) double-Rayleigh fading channels Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/0b6000ba4d5647279b7a1d39f1747114
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spelling	oai:doaj.org-article:0b6000ba4d5647279b7a1d39f17471142021-11-11T19:09:18ZSecure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints10.3390/s212171601424-8220https://doaj.org/article/0b6000ba4d5647279b7a1d39f17471142021-10-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/21/7160https://doaj.org/toc/1424-8220Vehicular 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.Suneel YadavAnshul PandeyDinh-Thuan DoByung Moo LeeAdão SilvaMDPI AGarticlephysical-layer securitycognitive radio vehicular networks (CRVNs)secrecy outage probability (SOP)ergodic secrecy capacity (ESC)double-Rayleigh fading channelsChemical technologyTP1-1185ENSensors, Vol 21, Iss 7160, p 7160 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	physical-layer security cognitive radio vehicular networks (CRVNs) secrecy outage probability (SOP) ergodic secrecy capacity (ESC) double-Rayleigh fading channels Chemical technology TP1-1185
spellingShingle	physical-layer security cognitive radio vehicular networks (CRVNs) secrecy outage probability (SOP) ergodic secrecy capacity (ESC) double-Rayleigh fading channels Chemical technology TP1-1185 Suneel Yadav Anshul Pandey Dinh-Thuan Do Byung Moo Lee Adão Silva Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints
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.
format	article
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
title	Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints
title_short	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_sort	secure cognitive radio-enabled vehicular communications under spectrum-sharing constraints
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0b6000ba4d5647279b7a1d39f1747114
work_keys_str_mv	AT suneelyadav securecognitiveradioenabledvehicularcommunicationsunderspectrumsharingconstraints AT anshulpandey securecognitiveradioenabledvehicularcommunicationsunderspectrumsharingconstraints AT dinhthuando securecognitiveradioenabledvehicularcommunicationsunderspectrumsharingconstraints AT byungmoolee securecognitiveradioenabledvehicularcommunicationsunderspectrumsharingconstraints AT adaosilva securecognitiveradioenabledvehicularcommunicationsunderspectrumsharingconstraints
_version_	1718431567140880384

Secure Cognitive Radio-Enabled Vehicular Communications under Spectrum-Sharing Constraints

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