research-article

Secrecy Transmission With a Helper: To Relay or to Jam

Authors:

Wenjie WangAuthors Info & Claims

IEEE Transactions on Information Forensics and Security, Volume 10, Issue 2

Pages 293 - 307

https://doi.org/10.1109/TIFS.2014.2374356

Published: 01 February 2015 Publication History

Abstract

In this paper, we consider the problem of secure communications for a four-node system consisting of one source, one destination, one eavesdropper, and one helper. We investigate the question of which role should the helper act to improve the secrecy, to jam, or to relay. Two transmission schemes are investigated: (1) direct transmission scheme (DTS) with jamming and (2) relay transmission scheme (RTS). We consider both the path-loss and fading-in channel models and define a notion of distance normalized signal-to-noise-ratio (DN-SNR) to account for propagation. The ergodic secrecy rate (ESR) is adopted as the performance metric and semi-closed-form expressions of ESR for the two schemes are derived. Additionally, optimal power allocations in both low and high DN-SNR regimes are characterized analytically. We give the performance comparison of the two schemes from the perspective of energy efficiency in the low DN-SNR regime, and characterize the secrecy degree of freedom in the high DN-SNR regime. In the high DN-SNR regime, DTS provides higher secrecy rate compared with RTS, while in the low DN-SNR regime, RTS outperforms DTS. Furthermore, we show that eavesdropper's position impacts greatly on security.

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Cited By

Kamboj AJindal PVerma P(2024)Reinforcement learning-based secure joint relay and jammer selection in dual-hop wireless networksThe Journal of Supercomputing10.1007/s11227-023-05575-880:2(2660-2680)Online publication date: 1-Jan-2024
https://dl.acm.org/doi/10.1007/s11227-023-05575-8
Zhou JQiao DQian H(2022)Virtual full-duplex buffer-aided relay selection schemes for secure cooperative wireless networksEURASIP Journal on Wireless Communications and Networking10.1186/s13638-022-02127-12022:1Online publication date: 12-May-2022
https://dl.acm.org/doi/10.1186/s13638-022-02127-1
Liu XYang XYu JYu K(2022)Cooperative communication design of physical layer security enhancement with social ties in random networksAd Hoc Networks10.1016/j.adhoc.2022.102822130:COnline publication date: 1-May-2022
https://dl.acm.org/doi/10.1016/j.adhoc.2022.102822
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cover image IEEE Transactions on Information Forensics and Security

IEEE Transactions on Information Forensics and Security Volume 10, Issue 2

Feb. 2015

217 pages

ISSN:1556-6013

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IEEE Press

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Published: 01 February 2015

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Cited By

Kamboj AJindal PVerma P(2024)Reinforcement learning-based secure joint relay and jammer selection in dual-hop wireless networksThe Journal of Supercomputing10.1007/s11227-023-05575-880:2(2660-2680)Online publication date: 1-Jan-2024
https://dl.acm.org/doi/10.1007/s11227-023-05575-8
Zhou JQiao DQian H(2022)Virtual full-duplex buffer-aided relay selection schemes for secure cooperative wireless networksEURASIP Journal on Wireless Communications and Networking10.1186/s13638-022-02127-12022:1Online publication date: 12-May-2022
https://dl.acm.org/doi/10.1186/s13638-022-02127-1
Liu XYang XYu JYu K(2022)Cooperative communication design of physical layer security enhancement with social ties in random networksAd Hoc Networks10.1016/j.adhoc.2022.102822130:COnline publication date: 1-May-2022
https://dl.acm.org/doi/10.1016/j.adhoc.2022.102822
Kamboj AJindal PVerma P(2021)Machine learning-based physical layer security: techniques, open challenges, and applicationsWireless Networks10.1007/s11276-021-02781-127:8(5351-5383)Online publication date: 1-Nov-2021
https://dl.acm.org/doi/10.1007/s11276-021-02781-1
Saini RMishra DDe S(2019)Subcarrier pairing as channel gain tailoringPhysical Communication10.1016/j.phycom.2018.11.01532:C(217-230)Online publication date: 1-Feb-2019
https://dl.acm.org/doi/10.1016/j.phycom.2018.11.015

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