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Power allocation and outage analysis for secure MISO cognitive radio networks with an unknown eavesdropper

Power allocation and outage analysis for secure MISO cognitive radio networks with an unknown eavesdropper
Power allocation and outage analysis for secure MISO cognitive radio networks with an unknown eavesdropper
This paper investigates the power allocation problem for secure secondary transmission in a multiple-input single-output cognitive wiretap system with artificial noise (AN). The secondary transmitter exchanges confidential information with the secondary destination in the presence of an unknown eavesdropper. Since the eavesdropper's channel state information (CSI) is unavailable, we propose an optimal adaptive power allocation scheme, and derive a closed-form expression of the optimal power allocation factor that minimizes the secrecy outage probability (SOP). A suboptimal fixed power allocation scheme is also proposed to reduce the system complexity. Moreover, exact closed-form expressions of SOP under both schemes are derived. Numerical results are provided to corroborate the accuracy of our analytical results and the superiority of the proposed schemes to the benchmarks.
0018-9545
16294 - 16298
Jia, Shaobo
0691003b-e264-4627-aa34-cc27da6844d0
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Zhang, Di
14bfc4a0-150b-4738-b76f-6179d2b789b8
Hao, Wanming
66d06077-5650-4a16-9805-b41aaedfd4ca
Gao, Feifei
c77e8fb7-8e54-4ac1-821f-b655f2511c71
Jia, Shaobo
0691003b-e264-4627-aa34-cc27da6844d0
Zhang, Jiankang
6add829f-d955-40ca-8214-27a039defc8a
Zhang, Di
14bfc4a0-150b-4738-b76f-6179d2b789b8
Hao, Wanming
66d06077-5650-4a16-9805-b41aaedfd4ca
Gao, Feifei
c77e8fb7-8e54-4ac1-821f-b655f2511c71

Jia, Shaobo, Zhang, Jiankang, Zhang, Di, Hao, Wanming and Gao, Feifei (2020) Power allocation and outage analysis for secure MISO cognitive radio networks with an unknown eavesdropper. IEEE Transactions on Vehicular Technology, 69 (2), 16294 - 16298. (doi:10.1109/TVT.2020.3040964).

Record type: Article

Abstract

This paper investigates the power allocation problem for secure secondary transmission in a multiple-input single-output cognitive wiretap system with artificial noise (AN). The secondary transmitter exchanges confidential information with the secondary destination in the presence of an unknown eavesdropper. Since the eavesdropper's channel state information (CSI) is unavailable, we propose an optimal adaptive power allocation scheme, and derive a closed-form expression of the optimal power allocation factor that minimizes the secrecy outage probability (SOP). A suboptimal fixed power allocation scheme is also proposed to reduce the system complexity. Moreover, exact closed-form expressions of SOP under both schemes are derived. Numerical results are provided to corroborate the accuracy of our analytical results and the superiority of the proposed schemes to the benchmarks.

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Power Allocation and Outage Analysis for Secure MISO Cognitive Radio Networks With an Unknown Eavesdropper - Accepted Manuscript
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e-pub ahead of print date: 27 November 2020

Identifiers

Local EPrints ID: 447808
URI: http://eprints.soton.ac.uk/id/eprint/447808
ISSN: 0018-9545
PURE UUID: 9a16d8ca-4e82-4aaa-9a3d-a93f8f2765a4
ORCID for Jiankang Zhang: ORCID iD orcid.org/0000-0001-5316-1711

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Date deposited: 23 Mar 2021 17:34
Last modified: 27 Nov 2022 05:01

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Contributors

Author: Shaobo Jia
Author: Jiankang Zhang ORCID iD
Author: Di Zhang
Author: Wanming Hao
Author: Feifei Gao

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