Robust outage secrecy rate optimizations for a MIMO secrecy channel

Chu, Zheng and Cumanan, Kanapathippillai and Ding, Zhiguo and Johnston, Martin and Le Goff, Stéphane (2015) Robust outage secrecy rate optimizations for a MIMO secrecy channel. IEEE Wireless Communications Letters, 4 (1). pp. 86-89. ISSN 2162-2337

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Abstract

This letter investigates robust secrecy rate optimization techniques for a multiple-input-multiple-output (MIMO) wiretap channel in the presence of a multiantenna eavesdropper. In particular, two robust secrecy rate optimization problems are studied: robust power minimization with an outage secrecy rate constraint and robust secrecy rate maximization subject to the outage secrecy rate and transmit power constraints. Here, it is assumed that the legitimate transmitter has perfect channel state information (CSI) of the legitimate receiver and imperfect CSI of the eavesdropper. Both robust problems are not convex in terms of transmit covariance matrix and the outage secrecy rate constraint. Hence, we propose a conservative approximation approach to reformulate this outage secrecy rate constraint by exploiting the Bernstein-type inequality to obtain a tractable solution for these two robust problems. Numerical results have been provided to validate the convergence and the performance of the proposed robust algorithms.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Wireless Communications Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3101
Subjects:
ID Code:
77796
Deposited By:
Deposited On:
19 Jan 2016 14:28
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Jun 2020 04:16