23 citations · 25 across the 23 of their papers we have counts for
25 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…
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…
Near-Field RIS-Assisted Localization Under Mutual Coupling
Alireza Fadakar, Musa Furkan Keskin, Hui Chen +2
Reconfigurable intelligent surfaces (RISs) have the potential to significantly enhance the performance of integrated sensing and communication (ISAC) systems, particularly in line-…
Joint Bistatic Positioning and Monostatic Sensing: Optimized Beamforming and Performance Tradeoff
Yuchen Zhang, Hui Chen, Pinjun Zheng +4
We investigate joint bistatic positioning (BP) and monostatic sensing (MS) within a multi-input multi-output orthogonal frequency-division system. Based on the derived Cramér-Rao B…
Optimized Beamforming for Joint Bistatic Positioning and Monostatic Sensing
Yuchen Zhang, Hui Chen, Pinjun Zheng +3
We investigate the performance tradeoff between \textit{bistatic positioning (BP)} and \textit{monostatic sensing (MS)} in a multi-input multi-output orthogonal frequency division…
Privacy Preservation in MIMO-OFDM Localization Systems: A Beamforming Approach
Yuchen Zhang, Hui Chen, Musa Furkan Keskin +4
We investigate an uplink MIMO-OFDM localization scenario where a legitimate base station (BS) aims to localize a user equipment (UE) using pilot signals transmitted by the UE, whil…
Joint Near-Field Sensing and Visibility Region Detection with Extremely Large Aperture Arrays
Huiping Huang, Alireza Pourafzal, Hui Chen +6
In this paper, we consider near-field localization and sensing with an extremely large aperture array under partial blockage of array antennas, where spherical wavefront and spatia…
RIS-Aided Positioning Under Adverse Conditions: Interference from Unauthorized RIS
Mengting Li, Hui Chen, Alireza Pourafzal +1
Positioning technology, which aims to determine the geometric information of a device in a global coordinate, is a key component in integrated sensing and communication systems. In…
Intrinsic Cramér-Rao Bound based 6D Localization and Tracking for 5G/6G Systems
Xueting Xu, Hui Chen, Shengqiang Shen +5
Localization and tracking are critical components of integrated sensing and communication (ISAC) systems, enhancing resource management, beamforming accuracy, and overall system re…
Integrated 6G TN and NTN Localization: Challenges, Opportunities, and Advancements
Sharief Saleh, Pinjun Zheng, Xing Liu +8
The rapid evolution of cellular networks has introduced groundbreaking technologies, including large and distributed antenna arrays and reconfigurable intelligent surfaces in terre…
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…
Efficient Localization with Base Station-Integrated Beyond Diagonal RIS
Mahmoud Raeisi, Hui Chen, Henk Wymeersch +1
This paper introduces a novel approach to efficient localization in next-generation communication systems through a base station (BS)-enabled passive beamforming utilizing beyond d…
Calibration in RIS-aided Integrated Sensing, Localization and Communication Systems
Reza Ghazalian, Pinjun Zheng, Hui Chen +6
Reconfigurable intelligent surfaces (RISs) are key enablers for integrated sensing and communication (ISAC) systems in the 6G communication era. With the capability of dynamically…
Privacy Preservation in Delay-Based Localization Systems: Artificial Noise or Artificial Multipath?
Yuchen Zhang, Hui Chen, Henk Wymeersch
Localization plays an increasingly pivotal role in 5G/6G systems, enabling various applications. This paper focuses on the privacy concerns associated with delay-based localization…
AoA-Based Physical Layer Authentication in Analog Arrays under Impersonation Attacks
Muralikrishnan Srinivasan, Linda Senigagliesi, Hui Chen +3
We discuss the use of angle of arrival (AoA) as an authentication measure in analog array multiple-input multiple-output (MIMO) systems. A base station equipped with an analog arra…
V2X Sidelink Positioning in FR1: From Ray-Tracing and Channel Estimation to Bayesian Tracking
Yu Ge, Maximilian Stark, Musa Furkan Keskin +5
Sidelink positioning research predominantly focuses on the snapshot positioning problem, often within the mmWave band. Only a limited number of studies have delved into vehicle-to-…
Beamforming Inferring by Conditional WGAN-GP for Holographic Antenna Arrays
Fenghao Zhu, Xinquan Wang, Chongwen Huang +5
The beamforming technology with large holographic antenna arrays is one of the key enablers for the next generation of wireless systems, which can significantly improve the spectra…
Device-Free 3D Drone Localization in RIS-Assisted mmWave MIMO Networks
Jiguang He, Charles Vanwynsberghe, Hui Chen +2
In this paper, we investigate the potential of reconfigurable intelligent surfaces (RISs) in facilitating passive/device-free three-dimensional (3D) drone localization within exist…
Integrated Communication, Localization, and Sensing in 6G D-MIMO Networks
Hao Guo, Henk Wymeersch, Behrooz Makki +10
Future generations of mobile networks call for concurrent sensing and communication functionalities in the same hardware and/or spectrum. Compared to communication, sensing service…
ELAA Near-Field Localization and Sensing with Partial Blockage Detection
Hui Chen, Pinjun Zheng, Yu Ge +4
High-frequency communication systems bring extremely large aperture arrays (ELAA) and large bandwidths, integrating localization and (bi-static) sensing functions without extra inf…
RIS Position and Orientation Estimation via Multi-Carrier Transmissions and Multiple Receivers
Reza Ghazalian, Hui Chen, George C. Alexandropoulos +3
Reconfigurable intelligent surfaces (RISs) are considered as an enabling technology for the upcoming sixth generation of wireless systems, exhibiting significant potential for radi…