3 papers
cs.IT2025
Downlink Multiuser Communications Relying on Flexible Intelligent Metasurfaces
Jiancheng An, Chau Yuen, Marco Di Renzo +3
A flexible intelligent metasurface (FIM) is composed of an array of low-cost radiating elements, each of which can independently radiate electromagnetic signals and flexibly adjust…
cs.IT2025
Stacked Intelligent Metasurface-Based Transceiver Design for Near-Field Wideband Systems
Qingchao Li, Mohammed El-Hajjar, Chao Xu +3
Intelligent metasurfaces may be harnessed for realizing efficient holographic multiple-input and multiple-output (MIMO) systems, at a low hardware-cost and high energy-efficiency.…
cs.IT2025
Low-Complexity Channel Estimation for RIS-Assisted Multi-User Wireless Communications
Qingchao Li, Mohammed El-Hajjar, Ibrahim Hemadeh +2
Reconfigurable intelligent surfaces (RISs) are eminently suitable for improving the reliability of wireless communications by jointly designing the active beamforming at the base s…