Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks

Siyari, P; Krunz, M

Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks

Siyari, P Krunz, M

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Publisher:: IEEE
Publication Type:: Conference Proceeding
Citation:: 2019 IEEE Conference on Communications and Network Security, CNS 2019, 2019
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Siyari, P
dc.contributor.author	Krunz, M
dc.date	2019-06-10
dc.date.accessioned	2020-06-13T00:28:08Z
dc.date.available	2020-06-13T00:28:08Z
dc.date.issued	2019-06-01
dc.identifier.citation	2019 IEEE Conference on Communications and Network Security, CNS 2019, 2019
dc.identifier.isbn	9781538671177
dc.identifier.issn	2474-025X
dc.identifier.uri	http://hdl.handle.net/10453/141399
dc.description.abstract	© 2019 IEEE. We consider the downlink of a multiuser MIMO (MU-MIMO)network in the presence of an external eavesdropper (Eve). No knowledge of Eve's location is assumed at the access point (Alice). The information signals for downlink users (Bobs)are accompanied by bogus signals (a.k.a. friendly jamming)that are generated from Alice. The network is studied in underloaded and overloaded conditions. In an underloaded (overloaded)network, the number of antennas at Alice is larger (smaller)than the total number of Bobs' antennas. In the overloaded setting, traditional methods of creating friendly jamming (FJ), such as zero-forcing-based methods, are infeasible. We propose a linear precoding scheme that relaxes such infeasibility in overloaded MU-MIMO networks. In the worst-case scenario where Eve has knowledge of the channels between Alice and Bobs, we show that our method imposes the most stringent condition on the number of antennas required at Eve to cancel out FJ signals. We verify our analysis with simulations. It turns out that choosing the number of data streams has an important role in achieving a tradeoff between security, reliability, and the achievable rate.
dc.language	en
dc.publisher	IEEE
dc.relation.ispartof	2019 IEEE Conference on Communications and Network Security, CNS 2019
dc.relation.ispartof	IEEE Conference on Communications and Network Security
dc.relation.isbasedon	10.1109/CNS.2019.8802693
dc.rights	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Linear Precoding with Friendly Jamming in Overloaded MU-MIMO Wiretap Networks
dc.type	Conference Proceeding
utslib.location.activity	Washington DC, DC, USA,
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-06-13T00:28:06Z
pubs.finish-date	2019-06-12
pubs.place-of-publication	Piscataway, USA
pubs.publication-status	Published
pubs.start-date	2019-06-10
dc.location	Piscataway, USA

Abstract:

© 2019 IEEE. We consider the downlink of a multiuser MIMO (MU-MIMO)network in the presence of an external eavesdropper (Eve). No knowledge of Eve's location is assumed at the access point (Alice). The information signals for downlink users (Bobs)are accompanied by bogus signals (a.k.a. friendly jamming)that are generated from Alice. The network is studied in underloaded and overloaded conditions. In an underloaded (overloaded)network, the number of antennas at Alice is larger (smaller)than the total number of Bobs' antennas. In the overloaded setting, traditional methods of creating friendly jamming (FJ), such as zero-forcing-based methods, are infeasible. We propose a linear precoding scheme that relaxes such infeasibility in overloaded MU-MIMO networks. In the worst-case scenario where Eve has knowledge of the channels between Alice and Bobs, we show that our method imposes the most stringent condition on the number of antennas required at Eve to cancel out FJ signals. We verify our analysis with simulations. It turns out that choosing the number of data streams has an important role in achieving a tradeoff between security, reliability, and the achievable rate.

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http://hdl.handle.net/10453/141399