Secure communication with a relay helping the wire-tapper

Melda Yuksel; Elza Erkip

doi:10.1109/ITW.2007.4313141

Secure communication with a relay helping the wire-tapper

Melda Yuksel, Elza Erkip

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A four terminal Gaussian network, composed of a single source-destination pair, a relay and a wire-tapper is considered. Unlike the relay channel with a wire-tapper, it is assumed that the relay assists the wire-tapper, not the destination. The relay's objective is to decrease the achievable secrecy rates. However, since the destination is also allowed to listen to the relay's transmission, it also benefits from the relay in terms of achievable rates. Direct transmission, amplify-and-forward (AF), decode-and-forward (DF) and compress-and-forward (CF) relaying schemes are compared in terms of secrecy rates. It is shown that the best relaying strategy depends on relay's location. Comparison of relaying protocols and best power allocation schemes, when the relay assists the source-destination communication, do not readily extend to the case when the relay assists the wire-tapper.

Original language	English (US)
Title of host publication	2007 IEEE Information Theory Workshop, ITW 2007, Proceedings
Pages	595-600
Number of pages	6
DOIs	https://doi.org/10.1109/ITW.2007.4313141
State	Published - Dec 1 2007
Event	2007 IEEE Information Theory Workshop, ITW 2007 - Lake Tahoe, CA, United States Duration: Sep 2 2007 → Sep 6 2007

Publication series

Name	2007 IEEE Information Theory Workshop, ITW 2007, Proceedings

Other

Other	2007 IEEE Information Theory Workshop, ITW 2007
Country	United States
City	Lake Tahoe, CA
Period	9/2/07 → 9/6/07

ASJC Scopus subject areas

Computational Theory and Mathematics
Information Systems
Information Systems and Management

Access to Document

10.1109/ITW.2007.4313141

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Yuksel, M., & Erkip, E. (2007). Secure communication with a relay helping the wire-tapper. In 2007 IEEE Information Theory Workshop, ITW 2007, Proceedings (pp. 595-600). [4313141] (2007 IEEE Information Theory Workshop, ITW 2007, Proceedings). https://doi.org/10.1109/ITW.2007.4313141

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