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Degrees of Freedom and Beamforming for Large Intelligent Surfaces
Jiawang Li, Alireza Saberkari, Buon Kiong Lau +1
Spatial degrees of freedom (DoF), sampling, and beamforming are fundamental to multi-user large intelligent surfaces (LISs), where electromagnetic fields must be shaped, resolved,…
Vertical Sub-THz Channel Characterization: Sounder Implementation and Initial Measurements
Ali Al-Ameri, Xuesong Cai, Juan Sanchez +4
We present a measurement-based characterization of indoor vertical ceiling-to-ground sub-THz channels in the 136-144 GHz band, motivated by ceiling-mounted radio-unit deployments f…
Properties of Near Field Focusing for Three-Dimensional Large Intelligent Surface
Jiawang Li, Mats Gustafsson, Alireza Saberkari +1
This work investigates near-field focusing using a three-dimensional (3D) large intelligent surface (LIS) across frequencies and polarizations. Specifically, the LIS elements are d…