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- W2111441302 abstract "In this letter, we consider practical downlink multiuser multiple-input multiple-output systems where each user has multiple antennas and codebook-based limited channel feedback is available at base station. We propose a preprocessing scheme for downlink transmission where a unitary beamforming matrix is used. Firstly, we propose how to construct the unitary matrix that maximizes sum rate. Secondly, we propose a codebook-based channel feedback method for the proposed beamforming method. Numerical results show that the proposed scheme outperforms conventional zero-forcing beamforming scheme in terms of sum rate." @default.
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- W2111441302 date "2008-10-01" @default.
- W2111441302 modified "2023-09-26" @default.
- W2111441302 title "Enhanced Unitary Beamforming Scheme for Limited-Feedback Multiuser MIMO Systems" @default.
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- W2111441302 doi "https://doi.org/10.1109/lcomm.2008.081019" @default.
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