Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/6555
Title: Diversity-Multiplexing Tradeoff for the Multiple-Antenna Wire-tap Channel [Article]
Authors: Yüksel, Melda
Erkip, Elza
Keywords: Diversity-multiplexing tradeoff
MIMO
secrecy
wire-tap channel
Issue Date: 2011
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
Abstract: In this paper the fading multiple antenna (MIMO) wire-tap channel is investigated under short term power constraints. The secret diversity gain and the secret multiplexing gain are defined. Using these definitions, the secret diversity-multiplexing tradeoff (DMT) is calculated analytically for no transmitter side channel state information (CSI) and for full CSI. When there is no CSI at the transmitter, under the assumption of Gaussian codebooks, it is shown that the eavesdropper steals both transmitter and receiver antennas, and the secret DMT depends on the remaining degrees of freedom. When CSI is available at the transmitter (CSIT), the eavesdropper steals only transmitter antennas. This dependence on the availability of CSI is unlike the DMT results without secrecy constraints, where the DMT remains the same for no CSI and full CSI at the transmitter under short term power constraints. A zero-forcing type scheme is shown to achieve the secret DMT when CSIT is available.
URI: https://doi.org/10.1109/TWC.2011.010411.090943
https://hdl.handle.net/20.500.11851/6555
ISSN: 1536-1276
1558-2248
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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