Techniques for Enhanced Physical-Layer Security

Details Techniques for Enhanced Physical-Layer Security Techniques for Enhanced Physical-Layer Security

2010-08-22

arxiv.org/abs/1008.3705v1

Computer Science

Networking and Internet Architecture

Pre-print, IEEE Global Telecommunications Conference (GLOBECOM'10), Miami, FL, Dec. 2010

Scientific paper

Information-theoretic security--widely accepted as the strictest notion of security--relies on channel coding techniques that exploit the inherent randomness of propagation channels to strengthen the security of communications systems. Within this paradigm, we explore strategies to improve secure connectivity in a wireless network. We first consider the intrinsically secure communications graph (iS-graph), a convenient representation of the links that can be established with information-theoretic security on a large-scale network. We then propose and characterize two techniques--sectorized transmission and eavesdropper neutralization--which are shown to dramatically enhance the connectivity of the iS-graph.

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