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• W1973005186 abstract "In this paper, we study the performance of the Regularized Channel Inversion (RCI) precoder in a multi-user MIMO system with malicious users. We consider the general case when the number of users per transmit antenna β can take any value. We derive the optimal regularization parameter that maximizes the achievable secrecy sum-rate via large-system analysis, which we show to be accurate via simulations. We find that the secrecy requirements limit the number of users per transmit antenna that can be served with non-zero sum-rate. We show that for large signal-to-noise ratio, RCI can achieve secrecy without reducing the sum-rate if β 1, then the secrecy requirements result in a poor sum-rate." @default.
• W1973005186 created "2016-06-24" @default.
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• W1973005186 date "2012-04-01" @default.
• W1973005186 modified "2023-10-16" @default.
• W1973005186 title "Large system analysis of the secrecy sum-rates with Regularized Channel Inversion precoding" @default.
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• W1973005186 doi "https://doi.org/10.1109/wcnc.2012.6214425" @default.
• W1973005186 hasPublicationYear "2012" @default.
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