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• W2099681020 abstract "The performance of multiuser MIMO (MU-MIMO) downlink systems with preceding and decoding method by minimizing the total mean square error (TMSE) of all data streams of all users (T-MMSE) depends on the accuracy of the channel state information (CSI) available at the transmitter (CSIT). In this paper, a robust transmission scheme is proposed to suppress the interferences among data streams and users caused by imperfect CSIT. At the transmitter, the precoders are obtained through an iterative procedure by minimizing the expectation of the TMSE of all data streams of all users conditioned on the estimated CSI under a total transmit power constraint. At each user, a linear decoder is calculated based on the minimum mean square error (MMSE) criteria according to the realtime CSI. To fulfill it, a new pilot-sending architecture is introduced. Numerical results demonstrate that the proposed scheme is robust not only to the channel uncertainty at the transmitter but also to the channel uncertainty at each user, and can effectively improve the system performance." @default.
• W2099681020 created "2016-06-24" @default.
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• W2099681020 date "2008-03-01" @default.
• W2099681020 modified "2023-10-18" @default.
• W2099681020 title "Robust Transmission for Multiuser MIMO Downlink Systems with Imperfect CSIT" @default.
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• W2099681020 doi "https://doi.org/10.1109/wcnc.2008.65" @default.
• W2099681020 hasPublicationYear "2008" @default.
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