Secure relay and jammer selection for physical layer security

Hui Hui, A. Lee Swindlehurst, Guobing Li, Junli Liang

Research output: Contribution to journalArticlepeer-review

111 Scopus citations

Abstract

Secure relay and jammer selection for physical-layer security is studied in a wireless network with multiple intermediate nodes and eavesdroppers, where each intermediate node either helps to forward messages as a relay, or broadcasts noise as a jammer. We derive a closed-form expression for the secrecy outage probability (SOP), and we develop two relay and jammer selection methods for SOP minimization. In both methods a selection vector and a corresponding threshold are designed and broadcast by the destination to ensure each intermediate node knows its own role while knowledge of the relay and jammer set is kept secret from all eavesdroppers. Simulation results show the SOP of the proposed methods are very close to that obtained by an exhaustive search, and that maintaining the privacy of the selection result greatly improves the SOP performance.

Original languageEnglish
Article number7001647
Pages (from-to)1147-1151
Number of pages5
JournalIEEE Signal Processing Letters
Volume22
Issue number8
DOIs
StatePublished - 1 Aug 2015
Externally publishedYes

Keywords

  • Cooperative jamming
  • Physical layer security
  • Relay selection
  • Secrecy outage probability

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