15 papers
Near-Field Localization via Reconfigurable Antennas
Alireza Fadakar, Yuchen Zhang, Hui Chen +3
Reconfigurable antennas (RAs) utilize the electromagnetic (EM) domain to provide dynamic control over antenna radiation patterns, which offers an effective way to enhance power eff…
Digital Twin-Assisted High-Precision Massive MIMO Localization in Urban Canyons
Ziqin Zhou, Hui Chen, Gerhard Steinböck +1
High-precision wireless localization in urban canyons is challenged by noisy measurements and severe non-line-of-sight (NLOS) propagation. This paper proposes a robust three-stage…
Modern Base Station Architecture: Enabling Passive Beamforming with Beyond Diagonal RISs
Mahmoud Raeisi, Hui Chen, Henk Wymeersch +1
Beamforming plays a crucial role in millimeter wave (mmWave) communication systems to mitigate the severe attenuation inherent to this spectrum. However, the use of large active an…
Integrated Cellular and LEO-based Positioning and Synchronization under User Mobility
Yasaman Ettefagh, Sharief Saleh, Musa Furkan Keskin +3
This paper investigates the localization, synchronization, and speed estimation of a mobile user equipment (UE) leveraging integrated terrestrial and non-terrestrial networks (NTNs…
Hybrid Codebook Design for Localization Using Electromagnetically Reconfigurable Fluid Antenna System
Alireza Fadakar, Yuchen Zhang, Hui Chen +3
Electromagnetically reconfigurable fluid antenna systems (ER-FAS) introduce additional degrees of freedom in the electromagnetic (EM) domain by dynamically steering per-antenna rad…
RIS Beam Calibration for ISAC Systems: Modeling and Performance Analysis
Mengting Li, Hui Chen, Sigurd Sandor Petersen +5
High-accuracy localization is a key enabler for integrated sensing and communication (ISAC), playing an essential role in various applications such as autonomous driving. Antenna a…