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dc.contributor.authorÖzçelikkale, A.en_US
dc.contributor.authorDuman, T. M.en_US
dc.date.accessioned2016-02-08T10:52:24Z
dc.date.available2016-02-08T10:52:24Z
dc.date.issued2015en_US
dc.identifier.issn1070-9908
dc.identifier.urihttp://hdl.handle.net/11693/25924
dc.description.abstractWe focus on linear precoding strategies as a physical layer technique for providing security in Gaussian interference channels. We consider an artificial noise aided scheme where transmitters may broadcast noise in addition to data in order to confuse eavesdroppers. We formulate the problem of minimizing the total mean-square error at the legitimate receivers while keeping the error values at the eavesdroppers above target levels. This set-up leads to a non-convex problem formulation. Hence, we propose a coordinate block descent technique based on a tight semi-definite relaxation and design linear precoders as well as spatial distribution of the artificial noise. Our results illustrate that artificial noise can provide significant performance gains especially when the secrecy levels required at the eavesdroppers are demanding. © 1994-2012 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.titleIEEE Signal Processing Lettersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/LSP.2015.2472275en_US
dc.subjectBeamformingen_US
dc.subjectmulti-useren_US
dc.subjectBeamformingen_US
dc.subjectMean square erroren_US
dc.subjectNetwork layersen_US
dc.subjectGaussian interference channelsen_US
dc.subjectInterference channelsen_US
dc.subjectLinear pre-codingen_US
dc.subjectMulti-useren_US
dc.subjectNonconvex problemen_US
dc.subjectSemidefinite relaxationen_US
dc.subjectTotal mean-square errorsen_US
dc.subjectSignal interferenceen_US
dc.titleCooperative precoding and artificial noise design for security over interference channelsen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage2234en_US
dc.citation.epage2238en_US
dc.citation.volumeNumber22en_US
dc.citation.issueNumber12en_US
dc.identifier.doi10.1109/LSP.2015.2472275en_US
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US


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