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Best Antenna Placement for Eavesdroppers: Distributed or Co-Located?

Title
Best Antenna Placement for Eavesdroppers: Distributed or Co-Located?
Authors
Wang, J[Wang, Jue]Lee, J[Lee, Jemin]Quek, TQS[Quek, Tony Q. S.]
DGIST Authors
Lee, J[Lee, Jemin]
Issue Date
2016-09
Citation
IEEE Communications Letters, 20(9), 1820-1823
Type
Article
Article Type
Article
Keywords
Antenna PlacementAntennasArtificial NoiseCo-LocatedDistributed AntennasEavesdropperFading ChannelsJammingLeakage RatesMIMOMIMO SystemsNetwork LayersPhysical-Layer SecurityRandom LocationSecurity Systems
ISSN
1089-7798
Abstract
In this letter, we investigate the best antenna placement for eavesdroppers (Eves), who intend to wiretap information from the legitimate transmitter (Alice). Two configurations of co-located or distributed antennas (CA or DA) are compared to find the most harmful eavesdropper setting, which achieves higher average eavesdropping rate, i.e., the long-term leakage rate to Eves averaged over channel fading and random locations. For K → ∞, where K is the number of available antennas for Eves, we prove that without a guard zone (i.e., a geometric zone around Alice where Eves cannot be located in), DA Eves are more harmful, while with a nonzero guard zone, CA Eve is superior. For the finite-K case, we derive upper/lower bounds for the average eavesdropping rate. The bounds are then used to find a DA region, in which the DA Eves definitely outperform CA Eve. It is shown that this region depends on the value of K, the radius of the guard zone, and the jamming at Alice. © 2016 IEEE.
URI
http://hdl.handle.net/20.500.11750/2203
DOI
10.1109/LCOMM.2016.2578927
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Lee, Je Min ISC(Information Security and Communication) Lab
  • Research Interests Wireless Communication System; Information Security
Files:
There are no files associated with this item.
Collection:
Information and Communication EngineeringETC1. Journal Articles


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