Wireless Information-Theoretic Security: Theoretical analysis & experimental measurements with multiple eavesdroppers in an outdoor obstacle-dense MANET

Journal article


Chrysikos, T, Birkos, K, Dagiuklas, A. and Kotsopoulos, S (2016). Wireless Information-Theoretic Security: Theoretical analysis & experimental measurements with multiple eavesdroppers in an outdoor obstacle-dense MANET. Physical Communication.
AuthorsChrysikos, T, Birkos, K, Dagiuklas, A. and Kotsopoulos, S
Abstract

Wireless Information-Theoretic Security (WITS) has been suggested as a robust security scheme, especially for infrastructure-less networks. Based on the physical layer, WITS considers quasi-static Rayleigh fading instead of the classic Gaussian wiretap scenario. In this paper, they key parameters of WITS are investigated by implementing an 802.11n ad-hoc network in an outdoor obstacle-dense topology. Measurements performed throughout the topology allow for a realistic evaluation of a scenario with multiple moving eavesdroppers. Low speed user movement has been considered, so that Doppler spread can be discarded. A set of discrete field test trials have been conducted, based on simulation of human mobility throughout an obstacle-constrained environment. Average Signal-to-Noise Ratio (SNR) values have been measured for all moving nodes, and the Probability of Non-Zero Secrecy Capacity has been calculated for different eavesdropping cooperative schemes (Selection Combining and Maximal-Ratio Combining). In addition, the Outage Probability has been estimated with regard to a nonzero target Secrecy Rate for both techniques. The results have been compared with the respective values of WITS key parameters derived from theoretical analysis.

KeywordsWireless Security; Rayleigh channels; Ad-hoc networks; Diversity
Year2016
JournalPhysical Communication
PublisherElsevier
Digital Object Identifier (DOI)doi:10.1016/j.phycom.2016.11.003
Publication dates
Print22 Nov 2016
Publication process dates
Deposited12 Jan 2017
Accepted18 Nov 2016
Accepted author manuscript
License
CC BY-NC-ND 4.0
File Access Level
Open
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https://openresearch.lsbu.ac.uk/item/8715y

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