Secure transmission in MIMO wiretap channels using general-order transmit antenna selection with outdated CSI

Yuzhen Huang, Fawaz S. Al-Qahtani, Trung Q. Duong, Jinlong Wang

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

In this paper, we propose general-order transmit antenna selection to enhance the secrecy performance of multiple-input-multiple-output multieavesdropper channels with outdated channel state information (CSI) at the transmitter. To evaluate the effect of the outdated CSI on the secure transmission of the system, we investigate the secrecy performance for two practical scenarios, i.e., Scenarios I and II, where the eavesdropper's CSI is not available at the transmitter and is available at the transmitter, respectively. For Scenario I, we derive exact and asymptotic closed-form expressions for the secrecy outage probability in Nakagami-$m$ fading channels. In addition, we also derive the probability of nonzero secrecy capacity and the-outage secrecy capacity, respectively. Simple asymptotic expressions for the secrecy outage probability reveal that the secrecy diversity order is reduced when the CSI is outdated at the transmitter, and it is independent of the number of antennas at each eavesdropper NE, the fading parameter of the eavesdropper's channel mE, and the number of eavesdroppers $M$. For Scenario II, we make a comprehensive analysis of the average secrecy capacity obtained by the system. Specifically, new closed-form expressions for the exact and asymptotic average secrecy capacity are derived, which are valid for general systems with an arbitrary number of antennas, number of eavesdroppers, and fading severity parameters. Resorting to these results, we also determine a high signal-to-noise ratio power offset to explicitly quantify the impact of the main channel and the eavesdropper's channel on the average secrecy capacity.

Original languageEnglish
Article number7118654
Pages (from-to)2959-2971
Number of pages13
JournalIEEE Transactions on Communications
Volume63
Issue number8
DOIs
Publication statusPublished - 1 Aug 2015

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Channel state information
MIMO systems
Transmitters
Outages
Antennas
Fading channels
Signal to noise ratio

Keywords

  • MIMO wiretap channel
  • Nakagami-m fading
  • physical layer security
  • transmit antenna selection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Secure transmission in MIMO wiretap channels using general-order transmit antenna selection with outdated CSI. / Huang, Yuzhen; Al-Qahtani, Fawaz S.; Duong, Trung Q.; Wang, Jinlong.

In: IEEE Transactions on Communications, Vol. 63, No. 8, 7118654, 01.08.2015, p. 2959-2971.

Research output: Contribution to journalArticle

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