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Relay selection for wireless communications against eavesdropping: a security-reliability trade-off perspective

Relay selection for wireless communications against eavesdropping: a security-reliability trade-off perspective
Relay selection for wireless communications against eavesdropping: a security-reliability trade-off perspective
This article examines secrecy coding aided wireless communications from a source to a destination in the presence of an eavesdropper from an SRT perspective. Explicitly, security is quantified in terms of the intercept probability experienced at the eavesdropper, while the outage probability encountered at the destination is used to measure transmission reliability. We characterize the SRT of conventional direct transmission from the source to the destination and show that if the outage probability is increased, the intercept probability decreases, and vice versa. We first demonstrate that the employment of relay nodes for assisting source-destination transmission is capable of defending against eavesdropping, followed by quantifying the benefits of SRS as well as MRS schemes. More specifically, in the SRS scheme, only the single "best" relay is selected for forwarding the source signal to the destination, whereas the MRS scheme allows multiple relays to participate in this process. It is illustrated that both the SRS and MRS schemes achieve a better SRT than conventional direct transmission, especially upon increasing the number of relays. Numerical results also show that, as expected, MRS outperforms SRS in terms of its SRT. Additionally, we present some open challenges and future directions for wireless relay aided physical-layer security.
0890-8044
74-79
Zou, Yulong
0359c94b-b989-448a-8164-da4047c4823f
Zhu, Jia
97efce51-67f8-43c6-ab8e-8224182c3a8b
Li, Xuelong
3cd6d9e8-6f27-4e74-a796-83e16ed1128d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zou, Yulong
0359c94b-b989-448a-8164-da4047c4823f
Zhu, Jia
97efce51-67f8-43c6-ab8e-8224182c3a8b
Li, Xuelong
3cd6d9e8-6f27-4e74-a796-83e16ed1128d
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zou, Yulong, Zhu, Jia, Li, Xuelong and Hanzo, Lajos (2016) Relay selection for wireless communications against eavesdropping: a security-reliability trade-off perspective. IEEE Network, 30 (5), 74-79. (doi:10.1109/MNET.2016.7579030).

Record type: Article

Abstract

This article examines secrecy coding aided wireless communications from a source to a destination in the presence of an eavesdropper from an SRT perspective. Explicitly, security is quantified in terms of the intercept probability experienced at the eavesdropper, while the outage probability encountered at the destination is used to measure transmission reliability. We characterize the SRT of conventional direct transmission from the source to the destination and show that if the outage probability is increased, the intercept probability decreases, and vice versa. We first demonstrate that the employment of relay nodes for assisting source-destination transmission is capable of defending against eavesdropping, followed by quantifying the benefits of SRS as well as MRS schemes. More specifically, in the SRS scheme, only the single "best" relay is selected for forwarding the source signal to the destination, whereas the MRS scheme allows multiple relays to participate in this process. It is illustrated that both the SRS and MRS schemes achieve a better SRT than conventional direct transmission, especially upon increasing the number of relays. Numerical results also show that, as expected, MRS outperforms SRS in terms of its SRT. Additionally, we present some open challenges and future directions for wireless relay aided physical-layer security.

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e-pub ahead of print date: 29 September 2016
Published date: September 2016

Identifiers

Local EPrints ID: 404419
URI: http://eprints.soton.ac.uk/id/eprint/404419
ISSN: 0890-8044
PURE UUID: db2f3eff-0163-4124-87f7-657fb9ac8b34
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 09 Jan 2017 10:37
Last modified: 18 Mar 2024 02:35

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Contributors

Author: Yulong Zou
Author: Jia Zhu
Author: Xuelong Li
Author: Lajos Hanzo ORCID iD

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