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Poisoned Feedback: The Impact of Malicious Users in Closed-Loop Multiuser MIMO Systems - MaRDI portal

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Poisoned Feedback: The Impact of Malicious Users in Closed-Loop Multiuser MIMO Systems

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Publication:6220321

arXiv1008.3730MaRDI QIDQ6220321

Author name not available (Why is that?)

Publication date: 22 August 2010

Abstract: Accurate channel state information (CSI) at the transmitter is critical for maximizing spectral efficiency on the downlink of multi-antenna networks. In this work we analyze a novel form of physical layer attacks on such closed-loop wireless networks. Specifically, this paper considers the impact of deliberately inaccurate feedback by malicious users in a multiuser multicast system. Numerical results demonstrate the significant degradation in performance of closed-loop transmission schemes due to intentional feedback of false CSI by adversarial users.












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