Performance Analysis for Secure Cooperative Systems Under Unreliable Backhaul Over Nakagami-m Channels

Cheng Yin*, Emiliano Garcia-Palacios

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

In this paper, the secrecy performance of cooperative heterogeneous networks with unreliable backhaul over Nakagami-m fading channels is investigated. To secure the proposed system, a friendly jammer is considered to confuse eavesdroppers. To transmit the signals from the source to the destination, a two-phase transmitter/relay selection scheme is proposed. The best transmitter is selected when the signal-to-noise ratio at the relays is maximized. In the second phase, the best relay is chosen when the jamming signal-to-interference-plus-noise ratio of the eavesdroppers is minimized. To investigate the system performance, closed -form expressions are derived for the secrecy outage probability, ergodic capacity and non-zero achievable secrecy rate. In order to gain an insight into the system, asymptotic analysis is also provided. The results show that the degree of cooperative transmission and backhaul reliability are key parameters in the system and these parameters determine the secrecy performance.

Original languageEnglish
Pages (from-to)480-490
Number of pages11
JournalMobile Networks and Applications
Volume24
Issue number2
Early online date07 Nov 2018
DOIs
Publication statusPublished - Apr 2019

Keywords

  • Heterogeneous networks
  • Nakagami-m fading channels
  • Physical layer security
  • Unreliable backhaul

ASJC Scopus subject areas

  • Software
  • Information Systems
  • Hardware and Architecture
  • Computer Networks and Communications

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