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Relaying techniques for enhancing the physical layer secrecy in cooperative networks with multiple eavesdroppers

Al-nahari, Azzam LU ; Krikidis, Ioannis; Ibrahim, Ahmed; Dessouky, Moawad and Abd El-Samie, Fathi (2012) In European Transactions on Telecommunications
Abstract
Physical layer security has recently attracted considerable attention in the context of information-theoretic point of view. In this paper, we investigate relay selection schemes for security-constrained half-duplex cooperative wireless networks with multiple eavesdroppers, which have the ability to cooperate to overhear the source transmission. The proposed techniques select a trusted decode-and-forward relay to assist the source transmission and maximize the achievable secure rate for different eavesdropper policies (cooperation or not); for the two cases, we assume that the channel is always available. In addition, a jamming method that selects two relay nodes to create an intentional interference at both phases of the... (More)
Physical layer security has recently attracted considerable attention in the context of information-theoretic point of view. In this paper, we investigate relay selection schemes for security-constrained half-duplex cooperative wireless networks with multiple eavesdroppers, which have the ability to cooperate to overhear the source transmission. The proposed techniques select a trusted decode-and-forward relay to assist the source transmission and maximize the achievable secure rate for different eavesdropper policies (cooperation or not); for the two cases, we assume that the channel is always available. In addition, a jamming method that selects two relay nodes to create an intentional interference at both phases of the decode-and-forward protocol to confound the eavesdropper nodes is also considered. Both the source–destination and source–eavesdroppers links are taken into account in the proposed analysis. Secrecy rate and secrecy outage probability are the two performance metrics that are used to verify the effectiveness of the proposed schemes while asymptotic approximations of the secrecy outage probability are also derived. Simulation and analytical results demonstrate the performance improvement of the proposed schemes. (Less)
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author
publishing date
type
Contribution to specialist publication or newspaper
publication status
in press
subject
categories
Popular Science
in
European Transactions on Telecommunications
publisher
John Wiley & Sons
external identifiers
  • scopus:84902263784
ISSN
1541-8251
DOI
10.1002/ett.2581
language
English
LU publication?
no
id
34553d35-15fa-4c8a-b18c-2ef4500e90ba (old id 3223777)
date added to LUP
2012-12-04 14:25:51
date last changed
2017-09-24 04:38:22
@misc{34553d35-15fa-4c8a-b18c-2ef4500e90ba,
  abstract     = {Physical layer security has recently attracted considerable attention in the context of information-theoretic point of view. In this paper, we investigate relay selection schemes for security-constrained half-duplex cooperative wireless networks with multiple eavesdroppers, which have the ability to cooperate to overhear the source transmission. The proposed techniques select a trusted decode-and-forward relay to assist the source transmission and maximize the achievable secure rate for different eavesdropper policies (cooperation or not); for the two cases, we assume that the channel is always available. In addition, a jamming method that selects two relay nodes to create an intentional interference at both phases of the decode-and-forward protocol to confound the eavesdropper nodes is also considered. Both the source–destination and source–eavesdroppers links are taken into account in the proposed analysis. Secrecy rate and secrecy outage probability are the two performance metrics that are used to verify the effectiveness of the proposed schemes while asymptotic approximations of the secrecy outage probability are also derived. Simulation and analytical results demonstrate the performance improvement of the proposed schemes.},
  author       = {Al-nahari, Azzam and Krikidis, Ioannis and Ibrahim, Ahmed and Dessouky, Moawad and Abd El-Samie, Fathi},
  issn         = {1541-8251},
  language     = {eng},
  publisher    = {John Wiley & Sons},
  series       = {European Transactions on Telecommunications},
  title        = {Relaying techniques for enhancing the physical layer secrecy in cooperative networks with multiple eavesdroppers},
  url          = {http://dx.doi.org/10.1002/ett.2581},
  year         = {2012},
}