Practical RIS-Aided Multiuser Communications with Imperfect CSI: Practical Model, Amplitude Feedback, and Beamforming Optimization
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS（2024）
Key words
Channel estimation,Reconfigurable intelligent surfaces,Precoding,Optimization,Wireless communication,Couplings,Quantization (signal),Practical reconfigurable intelligent surface (RIS),phase error,practical amplitude measurability,beamforming optimization,surrogate expression,low-complexity algorithm,correlated channel
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