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Title: Low Complexity Scheduling and Phase Shift Optimization in RIS-Aided mmWave Downlink Transmission
Authors: Cinalioglu, S.U.
Girici, T.
Keywords: Beamforming
Reconfigurable Intelligent Surfaces
Unmanned Aerial Vehicles
Millimeter waves
Scheduling algorithms
Aerial vehicle
Downlink transmissions
Lower complexity
Mm waves
Multiuser scheduling
Reconfigurable intelligent surface
Unmanned aerial vehicle
Issue Date: 2023
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: We study the problem of multi-user scheduling, beamforming and phase shift optimization in Reconfigurable Intelligent Surface (RIS)-assisted mmWave downlink transmission. The proposed proportional fair scheduling algorithm takes into account the direct and cascade achievable rates and inter-user interference. In order for a RIS to be useful in mmWave band, extremely high number of RIS elements are required. This results in prohibitive complexity in channel estimation and beam-forming/phase shift optimization. In this work we also discussed and proposed solutions for low complexity beamforming and phase shift optimization. Performance of the proposed scheduling, beamforming and phase shift optimization solution is evaluated by simulations. Comparison with some benchmarks reveal that interference-aware proportional fair user scheduling results in significant performance gains. © 2023 IEEE.
Description: Aselsan;CIS ARGE;Yeditepe University
2023 International Conference on Smart Applications, Communications and Networking, SmartNets 2023 -- 25 July 2023 through 27 July 2023 -- 191902
ISBN: 9798350302523
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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