Exploiting Opportunistic Scheduling for Physical-Layer Security in Multitwo User NOMA Networks
Joint Authors
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-23
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Information Technology and Computer Science
Abstract EN
In this paper, we address the opportunistic scheduling in multitwo user NOMA system consisting of one base station, multinear user, multifar user, and one eavesdropper.
To improve the secrecy performance, we propose the users selection scheme, called best-secure-near-user best-secure-far-user (BSNBSF) scheme.
The BSNBSF scheme aims to select the best near-far user pair, whose data transmission is the most robust against the overhearing of an eavesdropper.
In order to facilitate the performance analysis of the BSNBSF scheme in terms of secrecy outage performance, we derive the exact closed-form expression for secrecy outage probability (SOP) of the selected near user and the tight approximated closed-form expression for SOP of the selected far user, respectively.
Additionally, we propose the descent-based search method to find the optimal values of the power allocation coefficients that can minimize the total secrecy outage probability (TSOP).
The developed analyses are corroborated through Monte Carlo simulation.
Comparisons with the random-near-user random-far-user (RNRF) scheme are performed and show that the proposed scheme significantly improves the secrecy performance.
American Psychological Association (APA)
Shim, Kyusung& An, Beongku. 2018. Exploiting Opportunistic Scheduling for Physical-Layer Security in Multitwo User NOMA Networks. Wireless Communications and Mobile Computing،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1215928
Modern Language Association (MLA)
Shim, Kyusung& An, Beongku. Exploiting Opportunistic Scheduling for Physical-Layer Security in Multitwo User NOMA Networks. Wireless Communications and Mobile Computing No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1215928
American Medical Association (AMA)
Shim, Kyusung& An, Beongku. Exploiting Opportunistic Scheduling for Physical-Layer Security in Multitwo User NOMA Networks. Wireless Communications and Mobile Computing. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1215928
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215928