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Colluding eavesdroppers in large cooperative wireless networks
KTH, School of Electrical Engineering (EES), Communication Networks.
2014 (English)In: IWCIT 2014 - Iran Workshop on Communication and Information Theory, IEEE , 2014Conference paper (Refereed)
Abstract [en]

Securing communication against non-colluding passive eavesdroppers has been extensively studied. Colluding eavesdroppers were considered for interference-limited large networks. However, collusion was not investigated for large cooperative networks. This paper closes this gap: we study the improvement the eavesdroppers achieve due to collusion in terms of the information leakage rate in a large cooperative network. We consider a dense network with nl legitimate nodes, ne eavesdroppers, and path loss exponent α ≥ 2. We show that if ne (2+2/α) (log ne)γ = o(n l) holds, for some positive γ, then zero-cost secure communication is possible; i.e., ne colluding eavesdroppers can be tolerated. This means that our scheme achieves unbounded secure aggregate rate, given a fixed total power constraint for the entire network.

Place, publisher, year, edition, pages
IEEE , 2014.
Keyword [en]
Information theory, Colluding eavesdroppers, Cooperative networks, Cooperative wireless networks, Information leakage, Large networks, Passive eavesdroppers, Path loss exponent, Secure communications, Communication
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-168885DOI: 10.1109/IWCIT.2014.6842500ISI: 000364099400020ScopusID: 2-s2.0-84904556071ISBN: 9781479948772OAI: diva2:819331
2014 Iran Workshop on Communication and Information Theory, IWCIT 2014, 7 May 2014 through 8 May 2014, Tehran

QC 20150610

Available from: 2015-06-10 Created: 2015-06-09 Last updated: 2015-12-02Bibliographically approved

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ReferencesLink to record
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