Secrecy Analysis of MIMO Wiretap Channels with Low-Complexity Receivers under Imperfect Channel Estimation

Fawaz S. Al-Qahtani, Yuzhen Huang, Salah Hessien, Redha M. Radaydeh, Caijun Zhong, Hussein Alnuweiri

Research output: Contribution to journalArticle

14 Citations (Scopus)


This paper studies the achievable secrecy performance of multiple-input multiple-output wiretap channels in the presence of imperfect channel state information (CSI) with practical low-complexity transmission schemes. In particular, we propose a general order transmit antenna selection and power-efficient output-threshold maximal ratio combining scheme. Two separate cases depending on the availability of the eavesdropper's CSI at the transmitter are considered. New closed-form expressions of the secrecy outage probability and the average secrecy rate are obtained. In addition, the secrecy diversity order and array gains, high signal-to-noise ratio slope, and power offset are characterized through asymptotic analysis, which enables the characterization of the effect of imprecise transmit antenna selection, output-threshold, and imperfect CSI on the secrecy performance. Numerical results are presented to validate the main outcomes of this paper.

Original languageEnglish
Pages (from-to)257-270
Number of pages14
JournalIEEE Transactions on Information Forensics and Security
Issue number2
Publication statusPublished - 1 Feb 2017



  • diversity order
  • estimation error
  • MIMO
  • OT-MRC
  • Physical layer security

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Computer Networks and Communications

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