Practical RIS-Aided Multiuser Communications With Imperfect CSI: Practical Model, Amplitude Feedback, and Beamforming Optimization

Reconfigurable intelligent surfaces (RIS) can dynamically reconstruct wireless environments to enhance spectral efficiency. However, most existing studies have ignored the impact of the phase error and imperfect amplitude gain of the RIS. In this paper, we investigate the practical RIS-aided multius...

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Bibliographic Details
Published in:	IEEE transactions on wireless communications Vol. 23; no. 10; pp. 15245 - 15260
Main Authors:	Zhang, Qian, Liu, Ju, Tang, Haoge, Dong, Zheng, Li, Yonghui
Format:	Journal Article
Language:	English
Published:	New York IEEE 01.10.2024 The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:	Algorithms Amplitudes Beamforming beamforming optimization Channel estimation Closed form solutions Communications systems correlated channel Couplings Design optimization Error analysis Exact solutions Feedback low-complexity algorithm Optimization Optimization algorithms Phase error Phase shift practical amplitude measurability Practical reconfigurable intelligent surface (RIS) Precoding Quantization (signal) Reconfigurable intelligent surfaces surrogate expression Wireless communication
ISSN:	1536-1276, 1558-2248
Online Access:	Get full text
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