Downlink Transmissions of UAV-RIS-Assisted Cell-Free Massive MIMO Systems: Location and Trajectory Optimization

In this paper, we investigate a cell-free massive multiple-input multiple-output (CF-mMIMO) system with a reconfigurable intelligent surface (RIS) carried by an unmanned aerial vehicle (UAV), called the UAV-RIS. Compared with the RIS located on the ground, the UAV-RIS has a wider coverage that can r...

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Bibliographic Details

Published in:	Sensors
Main Authors:	Qi Zhang , Jie Zhao , Rongcheng Zhang , Longxiang Yang
Format:	Article
Language:	English
Published:	MDPI AG 2024-06-01
Subjects:	CF-mMIMO downlink sum rate location and trajectory optimization RIS UAV
Online Access:	https://www.mdpi.com/1424-8220/24/13/4064