Secrecy Performance of Finite-Sized Cooperative Single Carrier Systems with Unreliable Backhaul Connections

Kyeong Jin Kim, Phee Lep Yeoh, Philip V. Orlik, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


In this paper, the secrecy performance of finite-sized cooperative cyclic prefixed single carrier systems with multiple eavesdroppers and unreliable wireless backhaul connections across multiple transmitters is investigated. For nonidentical frequency-selective fading channels between the relay and destination nodes, secrecy performance metrics including the secrecy outage probability, ergodic secrecy rate, and probability of nonzero achievable secrecy rate are derived. Furthermore, the existence of performance limits on the secrecy outage probability and probability of non-zero achievable secrecy rate are verified for various backhaul scenarios. These limits are found to be exclusively determined by the backhaul reliability. For imperfect backhaul connections, it is found that the diversity gain promised by cooperative cyclic prefixed single-carrier systems cannot be achieved in the conventional asymptotic high signal-to-noise ratio region. Link-level simulations are conducted to verify the derived impact of backhaul reliability on the secrecy performance.

Original languageEnglish (US)
Article number7450672
Pages (from-to)4403-4416
Number of pages14
JournalIEEE Transactions on Signal Processing
Issue number17
StatePublished - Sep 1 2016

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering


  • Wireless backhaul
  • eavesdroppers
  • ergodic secrecy rate
  • frequency selective fading
  • secrecy outage probability
  • single carrier transmission
  • two-hop relaying protocol


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