789 citations · 4.2k across the 175 of their papers we have counts for
189 papers
Differential LEO Navigation under Asynchronous Satellite Clocks: Architecture and Performance Bounds
Qamar Bader, Sharief Saleh, Henk Wymeersch +2
Low Earth Orbit (LEO) communication satellites have emerged as a promising source of signals of opportunity for resilient positioning, navigation, and timing (PNT) in GNSS-challeng…
Multimodal Radio and Vision Fusion for Robust Localization in Urban V2I Communications
Can Zheng, Jiguang He, Chung G. Kang +2
Accurate localization is critical for vehicle-to-infrastructure (V2I) communication systems, especially in urban areas where GPS signals are often obstructed by tall buildings, lea…
Improving 3D Cellular Positioning Integrity with Bayesian RAIM
Liqin Ding, Gonzalo Seco-Granados, Hyowon Kim +4
Ensuring positioning integrity amid faulty measurements is crucial for safety-critical applications, making receiver autonomous integrity monitoring (RAIM) indispensable. This pape…
Integrated Communications and Localization for Massive MIMO LEO Satellite Systems
Li You, Xiaoyu Qiang, Yongxiang Zhu +6
Integrated communications and localization (ICAL) will play an important part in future sixth generation (6G) networks for the realization of Internet of Everything (IoE) to suppor…
Towards Distributed and Intelligent Integrated Sensing and Communications for 6G Networks
Emilio Calvanese Strinati, George C. Alexandropoulos, Navid Amani +8
This paper introduces the distributed and intelligent integrated sensing and communications (DISAC) concept, a transformative approach for 6G wireless networks that extends the eme…
Joint 3D User and 6D Hybrid Reconfigurable Intelligent Surface Localization
Reza Ghazalian, George C. Alexandropoulos, Gonzalo Seco-Granados +2
The latest assessments of the emerging technologies for reconfigurable intelligent surfaces (RISs) have indicated the concept's significant potential for localization and sensing,…
Transformer-Based Multi-Object Smoothing with Decoupled Data Association and Smoothing
Juliano Pinto, Georg Hess, Yuxuan Xia +2
Multi-object tracking (MOT) is the task of estimating the state trajectories of an unknown and time-varying number of objects over a certain time window. Several algorithms have be…
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…
V2X Sidelink Positioning in FR1: Scenarios, Algorithms, and Performance Evaluation
Yu Ge, Maximilian Stark, Musa Furkan Keskin +3
In this paper, we investigate sub-6 GHz V2X sidelink positioning scenarios in 5G vehicular networks through a comprehensive end-to-end methodology encompassing ray-tracing-based ch…
Semi-Supervised End-to-End Learning for Integrated Sensing and Communications
José Miguel Mateos-Ramos, Baptiste Chatelier, Christian Häger +3
Integrated sensing and communications (ISAC) is envisioned as one of the key enablers of next-generation wireless systems, offering improved hardware, spectral, and energy efficien…
6G Positioning and Sensing Through the Lens of Sustainability, Inclusiveness, and Trustworthiness
Henk Wymeersch, Hui Chen, Hao Guo +8
6G promises a paradigm shift by integrating positioning and sensing, enhancing not only the communication performance but also enabling location- and context-aware services. Histor…
On the Statistical Relation of Ultra-Reliable Wireless and Location Estimation
Tobias Kallehauge, Martin Voigt Vejling, Pablo Ramìrez-Espinosa +3
Location information is often used as a proxy to guarantee the performance of a wireless communication link. However, localization errors can result in a significant mismatch with…
Integrated Monostatic and Bistatic mmWave Sensing
Yu Ge, Hyowon Kim, Lennart Svensson +2
Millimeter-wave (mmWave) signals provide attractive opportunities for sensing due to their inherent geometrical connections to physical propagation channels. Two common modalities…
Model-Based End-to-End Learning for Multi-Target Integrated Sensing and Communication under Hardware Impairments
José Miguel Mateos-Ramos, Christian Häger, Musa Furkan Keskin +2
We study model-based end-to-end learning in the context of integrated sensing and communication (ISAC) under hardware impairments. Hardware impairments are usually addressed by mea…
Integrated Sensing and Communications with MIMO-OTFS
Musa Furkan Keskin, Carina Marcus, Olof Eriksson +3
Orthogonal time frequency space (OTFS) is a promising alternative to orthogonal frequency division multiplexing (OFDM) for high-mobility communications. We propose a novel multiple…
Fundamental Performance Bounds for Carrier Phase Positioning in Cellular Networks
Henk Wymeersch, Rouhollah Amiri, Gonzalo Seco-Granados
The carrier phase of cellular signals can be utilized for highly accurate positioning, with the potential for orders-of-magnitude performance improvements compared to standard time…
Impact of Phase Noise on Uplink Cell-Free Massive MIMO OFDM
Yibo Wu, Luca Sanguinetti, Ulf Gustavsson +2
Cell-Free massive MIMO networks provide huge power gains and resolve inter-cell interference by coherent processing over a massive number of distributed instead of co-located anten…
Zero Access Points 3D Cooperative Positioning via RIS and Sidelink Communications
Mustafa Ammous, Hui Chen, Henk Wymeersch +1
Reconfigurable intelligent surfaces (RISs) are expected to be a main component of future 6G networks, due to their capability to create a controllable wireless environment, and ach…
Set-Type Belief Propagation with Applications to Poisson Multi-Bernoulli SLAM
Hyowon Kim, Angel F. García-Fernández, Yu Ge +3
Belief propagation (BP) is a useful probabilistic inference algorithm for efficiently computing approximate marginal probability densities of random variables. However, in its stan…
JrCUP: Joint RIS Calibration and User Positioning for 6G Wireless Systems
Pinjun Zheng, Hui Chen, Tarig Ballal +3
Reconfigurable intelligent surface (RIS)-assisted localization has attracted extensive attention as it can enable and enhance localization services in extreme scenarios. However, m…
Performance of RIS-Aided Nearfield Localization under Beams Approximation from Real Hardware Characterization
Moustafa Rahal, Benoit Denis, Kamran Keykhosravi +4
The technology of reconfigurable intelligent surfaces (RIS) has been showing promising potential in a variety of applications relying on Beyond-5G networks. Reconfigurable intellig…
Critical Zones for Comfortable Collision Avoidance with a Leading Vehicle
Jordanka Kovaceva, Nikolce Murgovski, Balázs Kulcsár +2
This paper provides a general framework for efficiently obtaining the appropriate intervention time for collision avoidance systems to just avoid a rear-end crash. The proposed fra…
Experimental Validation of Single BS 5G mmWave Positioning and Mapping for Intelligent Transport
Yu Ge, Hedieh Khosravi, Fan Jiang +10
Positioning with 5G signals generally requires connection to several base stations (BSs), which makes positioning more demanding in terms of infrastructure than communications. To…
RIS-Enabled Smart Wireless Environments: Deployment Scenarios, Network Architecture, Bandwidth and Area of Influence
George C. Alexandropoulos, Dinh-Thuy Phan-Huy, Kostantinos D. Katsanos +19
Reconfigurable Intelligent Surfaces (RISs) constitute the key enabler for programmable electromagnetic propagation environments, and are lately being considered as a candidate phys…