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On the Diversity-Multiplexing Tradeoff of Secret-Key Agreement over Multiple-Antenna Channels

Bibliography:

Marwen Zorgui, Zouheir Rezki, Basel Alomair and Mohamed-Slim Alouini, On the Diversity-Multiplexing Tradeoff of Secret-Key Agreement over Multiple-Antenna Channels, in  Proceedings IEEE   Allerton Conference on Communication;  Control  and Computing  ( Allerton )2014, Monticello, IL,  USA, 1-3 October 2014. 

Authors:

Marwen Zorgui, Zouheir Rezki, Basel Alomair and Mohamed-Slim Alouini

Keywords:

Secret-key agreement, outage probability, high- power, diversity multiplexing tradeoff.

Year:

2014

Abstract:

We consider secret-key agreement with public discussion over Rayleigh fading quasi-static channels. First, the secret-key diversity gain and the secret-key multiplexing gain are defined. Then, the secret-key diversity multiplexing tradeoff (DMT) is established. The eavesdropper is shown to “steal” only transmit antennas. We show that likewise the DMT without secrecy constraint, the secret-key DMT is the same either with or without full channel state information (CSI) at the transmitter (CSI-T). This insensitivity of secret- key DMT toward CSI-T highlights a fundamental difference between secret-key agreement and the wiretap channel whose secret DMT depends crucially on CSI-T. Several secret-key DMT-achieving schemes are presented in case of full CSI-T.
 

ISSN:

2014