Energy-Efficient Relay Selection Scheme for Physical Layer Security in Cognitive Radio Networks
Joint Authors
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-01-22
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Security is a critical issue in cognitive radio (CR) relay networks.
Most previous work concentrates on maximizing secrecy capacity (SC) as a criterion to guarantee the security requirements in CR relaynetworks.
However, under the requirement of “green” radio communication, the energy consumption is largely ignored.
This paper proposes a relay selection scheme which jointly considers the best relayselection and dynamic power allocation in order to maximize SC and to minimize energy consumption.
Moreover, we consider finite-state Markov channels and residual relay energy in the relay selection and power allocation process.
Specifically, the formulation of the proposed relay selection and power allocation scheme is based on the restless bandit problem, which is solved by the primal-dual index heuristic algorithm.
Additionally, the obtained optimal relay selection policy has an indexability property that dramatically reduces the computational complexity.
Numerical results are presented to show that our proposed scheme has the maximum SC and minimum energy consumption compared to the existing ones.
American Psychological Association (APA)
Jiang, Li& Tian, Hui. 2015. Energy-Efficient Relay Selection Scheme for Physical Layer Security in Cognitive Radio Networks. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074212
Modern Language Association (MLA)
Jiang, Li& Tian, Hui. Energy-Efficient Relay Selection Scheme for Physical Layer Security in Cognitive Radio Networks. Mathematical Problems in Engineering No. 2015 (2015), pp.1-9.
https://search.emarefa.net/detail/BIM-1074212
American Medical Association (AMA)
Jiang, Li& Tian, Hui. Energy-Efficient Relay Selection Scheme for Physical Layer Security in Cognitive Radio Networks. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-9.
https://search.emarefa.net/detail/BIM-1074212
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074212