Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/6153
Title: | A Secure Communication Game With a Relay Helping the Eavesdropper [Article] | Authors: | Yüksel, Melda Liu, Xi Erkip, Elza |
Keywords: | Eavesdropping jamming physical layer security relay channel wire-tap channel |
Publisher: | IEEE-Inst Electrical Electronics Engineers Inc | Abstract: | In this work, a four-terminal complex Gaussian network composed of a source, a destination, an eavesdropper, and a jammer relay is studied under two different set of assumptions: 1) The jammer relay does not hear the source transmission, and 2) The jammer relay is causally given the source message. In both cases, the jammer relay assists the eavesdropper and aims to decrease the achievable secrecy rates. The source, on the other hand, aims to increase it. To help the eavesdropper, the jammer relay can use pure relaying and/or send interference. Each of the problems is formulated as a two-player, noncooperative, zero-sum continuous game. Assuming Gaussian strategies at the source and the jammer relay in the first problem, the Nash equilibrium is found and shown to be achieved with mixed strategies in general. The optimal cumulative distribution functions (cdfs) for the source and the jammer relay that achieve the value of the game, which is the Nash equilibrium secrecy rate, are found. For the second problem, the Nash equilibrium solution is found and the results are compared to the case when the jammer relay is not informed about the source message. | URI: | https://doi.org/10.1109/TIFS.2011.2125956 https://hdl.handle.net/20.500.11851/6153 |
ISSN: | 1556-6013 1556-6021 |
Appears in Collections: | Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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