2023
DOI: 10.1109/lwc.2023.3256187
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MU-Massive MIMO With Multiple RISs: SINR Maximization and Asymptotic Analysis

Abstract: In this letter, we investigate the signal-tointerference-plus-noise-ratio (SINR) maximization problem in a multi-user massive multiple-input-multiple-output (massive MIMO) system enabled with multiple reconfigurable intelligent surfaces (RISs). We examine two zero-forcing (ZF) beamforming approaches for interference management namely BS-UE-ZF and BS-RIS-ZF that enforce the interference to zero at the users (UEs) and the RISs, respectively. Then, for each case, we resolve the SINR maximization problem to find t… Show more

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Cited by 5 publications
(4 citation statements)
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“…There are several challenges involving beamforming and phase shift design and optimization in a RIS-aided multi-user MIMO and massive MIMO scenarios with different objectives [2]- [11], including the maximization of the system sum-rate [2], [3], spectral efficiency [4] and energy efficiency [5], [6], or minimization of the transmission power [7], MAX-MIN SINR problem [8], [9], and the exposure to electromagnetic fields [10], [11]. Moreover, a more sophisticated setup involving multiple RIS is investigated in [12]. The authors investigate the SINR maximization problem in the downlink (DL) transmission of a multi-user massive MIMO system assisted with multiple RISs.…”
Section: A Related Workmentioning
confidence: 99%
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“…There are several challenges involving beamforming and phase shift design and optimization in a RIS-aided multi-user MIMO and massive MIMO scenarios with different objectives [2]- [11], including the maximization of the system sum-rate [2], [3], spectral efficiency [4] and energy efficiency [5], [6], or minimization of the transmission power [7], MAX-MIN SINR problem [8], [9], and the exposure to electromagnetic fields [10], [11]. Moreover, a more sophisticated setup involving multiple RIS is investigated in [12]. The authors investigate the SINR maximization problem in the downlink (DL) transmission of a multi-user massive MIMO system assisted with multiple RISs.…”
Section: A Related Workmentioning
confidence: 99%
“…In this scenario, they assume that the BS directly serves some of the UEs, while others have no direct channel to the BS and are served through the RISs. Each RIS serves several UEs in a specific geographic area, forming a cluster [12]. A zero-forcing (ZF) beamforming approach is deployed at the BS, completely canceling the interference, allowing the asymptotic analysis, and facilitating the RIS phase-shift matrices design.…”
Section: A Related Workmentioning
confidence: 99%
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“…To obtain a transceiver waveform with high quality and reliability, we study the joint design of the transmit waveform and receive filter. The SINR is a fundamental metric used for evaluating the overall system performance [44][45][46]. In the FDA-MIMO radar, crucial tasks such as target detection, interference suppressing, target tracking, and synthetic aperture radar imaging necessitate a higher SINR output to facilitate the comprehensive acquisition of multi-dimensional information.…”
Section: Optimization Problem Of Joint Beamformingmentioning
confidence: 99%