MIMO wiretap channels with randomly located eavesdroppers: Large-system analysis

Maksym A. Girnyk, Frédéric Gabry, Mikko Vehkaperä, Lars K. Rasmussen, Mikael Skoglund

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

Security issues in wireless networks have become a subject of growing interest in recent years due to the broadcast nature of wireless channels. In this paper, we investigate secure communication over a multi-antenna wiretap channel in the presence of randomly distributed eavesdroppers. In the fast fading environment, the overall performance of this channel is traditionally characterized by the ergodic secrecy capacity, which, in general, cannot be derived explicitly. Nevertheless, based on the assumption that the numbers of antennas at legitimate terminals and the number of eavesdroppers grow large without bound, we derive a deterministic approximation of an achievable ergodic secrecy rate for arbitrary inputs. In addition, we characterize the secrecy rates for practically relevant separate-decoding scheme at the receiver. We validate the proposed large-system approximation through numerical simulations and observe a good match with the actual secrecy rates. Finally, we also analyze some interesting behavior of the secrecy rates in the given scenario depending on the geometry of the nodes.
Original languageEnglish
Title of host publication2015 IEEE International Conference on Communication Workshop, ICCW 2015
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages480-484
ISBN (Electronic)978-1-4673-6305-1
ISBN (Print)978-1-4673-6304-4
DOIs
Publication statusPublished - 8 Sep 2015
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Communication Workshop, ICCW 2015 - London, United Kingdom
Duration: 8 Jun 201512 Jun 2015

Conference

ConferenceIEEE International Conference on Communication Workshop, ICCW 2015
Abbreviated titleICCW 2015
CountryUnited Kingdom
CityLondon
Period8/06/1512/06/15

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Cite this

Girnyk, M. A., Gabry, F., Vehkaperä, M., Rasmussen, L. K., & Skoglund, M. (2015). MIMO wiretap channels with randomly located eavesdroppers: Large-system analysis. In 2015 IEEE International Conference on Communication Workshop, ICCW 2015 (pp. 480-484). [7247226] IEEE Institute of Electrical and Electronic Engineers . https://doi.org/10.1109/ICCW.2015.7247226