On the secrecy capacity of the MISO wiretap channel under imperfect channel estimation

Handle URI:
http://hdl.handle.net/10754/565013
Title:
On the secrecy capacity of the MISO wiretap channel under imperfect channel estimation
Authors:
Rezki, Zouheir; Alomair, Basel; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
We 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.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
2014 IEEE Global Communications Conference
Conference/Event name:
2014 IEEE Global Communications Conference, GLOBECOM 2014
Issue Date:
Dec-2014
DOI:
10.1109/GLOCOM.2014.7037037
Type:
Conference Paper
ISBN:
9781479935116
Appears in Collections:
Conference Papers; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRezki, Zouheiren
dc.contributor.authorAlomair, Baselen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-04T07:28:13Zen
dc.date.available2015-08-04T07:28:13Zen
dc.date.issued2014-12en
dc.identifier.isbn9781479935116en
dc.identifier.doi10.1109/GLOCOM.2014.7037037en
dc.identifier.urihttp://hdl.handle.net/10754/565013en
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.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectartificial noiseen
dc.subjectbeamformingen
dc.subjectimperfect channel estimationen
dc.subjectmultiple antennasen
dc.subjecton-off signalingen
dc.subjectSecrecy capacityen
dc.titleOn the secrecy capacity of the MISO wiretap channel under imperfect channel estimationen
dc.typeConference Paperen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journal2014 IEEE Global Communications Conferenceen
dc.conference.date8 December 2014 through 12 December 2014en
dc.conference.name2014 IEEE Global Communications Conference, GLOBECOM 2014en
dc.contributor.institutionNational Center for Cybersecurity Technology (C4C), King Abdulaziz City for Science and TechnologyRiyadh, Saudi Arabiaen
kaust.authorRezki, Zouheiren
kaust.authorAlouini, Mohamed-Slimen
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