6G Fresnel Spot Beamfocusing using Large-Scale Metasurfaces: A Distributed DRL-Based Approach
We propose a novel approach to smart spot-beamforming (SBF) in the Fresnel zone leveraging extremely large-scale programmable metasurfaces (ELPMs). A smart SBF […]
Channel modeling for reflective phased array type RISs in mmWave networks
This paper presents and overview, challenges and some recent results on channel modeling of the phased array type reconfigurable intelligent surfaces (RISs) […]
Radio Localization and Mapping With Reconfigurable Intelligent Surfaces
5G radio for millimeter-wave (mm-wave) and beyond5G concepts at 0.1–1 THz can exploit angle and delay measurements for localization through an increased […]
Short Range 3D MIMO mmWave Channel Reconstruction via Geometry-aided AoA Estimation
In some millimeter wave (mmWave) applications, such as wearables, the distance between the transceivers is relatively short. Further, the channel has significant […]
Correlation of hybrid beamforming arrays in the context of OTA testing
Hybrid beamforming antenna arrays are a prominent component in communications at mm-wave frequencies. Multiple analogue beamforming arrays will be used for spatial […]
Inter-beam Interference Reduction in Hybrid mmW Beamforming Transceivers
Practical radio frequency beamforming can suffer from high sidelobe levels which cause inter-beam interference (IBI) in multibeam transceivers. IBI can be reduced […]
On radiated performance evaluation of massive MIMO devices in multiprobe anechoic chamber OTA Setups
Abstract Radiated testing of massive multiple-input-multiple-output devices in fading radio-channel conditions is expected to be essential in the development of the fifth-generation […]