Wireless Information-Theoretic Security: Theoretical analysis & experimental measurements with multiple eavesdroppers in an outdoor obstacle-dense MANET
| Autor: | Theofilos Chrysikos, Stavros Kotsopoulos, Tasos Dagiuklas, Konstantinos Birkos |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
business.industry
Wireless ad hoc network Computer science 05 social sciences Physical layer 050801 communication & media studies 020206 networking & telecommunications Eavesdropping 02 engineering and technology Information-theoretic security Wireless security 0508 media and communications 0202 electrical engineering electronic engineering information engineering Key (cryptography) Wireless Electrical and Electronic Engineering business Algorithm Computer Science::Information Theory Computer network Rayleigh fading |
| Zdroj: | Physical Communication. 25:577-587 |
| ISSN: | 1874-4907 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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