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dc.contributor.authorRezki, Zouheir
dc.contributor.authorAlomair, Basel
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2015-08-04T07:28:13Z
dc.date.available2015-08-04T07:28:13Z
dc.date.issued2014-12
dc.identifier.isbn9781479935116
dc.identifier.doi10.1109/GLOCOM.2014.7037037
dc.identifier.urihttp://hdl.handle.net/10754/565013
dc.description.abstractWe consider a wiretap channel consisting of a source with multiple antennas, a legitimate receiver and an eavesdropper with a single antenna each. The channels between the source and the receivers undergo fast fading. We assume that the transmitter, in addition to the statistics of both channels, is only aware of a noisy version of the CSI to the legitimate receiver referred to as main channel. The legitimate receiver is aware of both its instantaneous channel gain and the transmitter's estimate of the main channel. On the other hand, the eavesdropper's receiver, in addition to its instantaneous channel realization, is aware of the actual main CSI and the transmitter's estimate as well. While the capacity of this channel is still open even with perfect CSI at the transmitter, we provide in this paper upper and lower bounds on the secrecy capacity. The upper bound is tighter than the one corresponding to perfect main CSI and the gap between the two upper bounds is characterized in function of the channel estimation error variance, at high-SNR. Furthermore, we show that our upper and lower bounds coincide in the case of no main CSI providing a trivial secrecy capacity.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectartificial noise
dc.subjectbeamforming
dc.subjectimperfect channel estimation
dc.subjectmultiple antennas
dc.subjecton-off signaling
dc.subjectSecrecy capacity
dc.titleOn the secrecy capacity of the MISO wiretap channel under imperfect channel estimation
dc.typeConference Paper
dc.contributor.departmentCommunication Theory Lab
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journal2014 IEEE Global Communications Conference
dc.conference.date8 December 2014 through 12 December 2014
dc.conference.name2014 IEEE Global Communications Conference, GLOBECOM 2014
dc.contributor.institutionNational Center for Cybersecurity Technology (C4C), King Abdulaziz City for Science and TechnologyRiyadh, Saudi Arabia
kaust.personRezki, Zouheir
kaust.personAlouini, Mohamed-Slim


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