5 citations · 11 across the 20 of their papers we have counts for
21 papers
On the Feasibility of Human Presence Detection Using Ceiling-Mounted Sub-THz Channel Sounding: Conference Room Measurement
Ali Al-Ameri, Xuesong Cai, Aleksei Fedorov +1
This paper presents a measurement-based investigation on the feasibility of human presence detection using a ceiling-mounted sub-THz channel sounder operating from 134 to 146~GHz.…
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…
Performance Analysis of Digital Beamforming mmWave MIMO with Low-Resolution DACs/ADCs
Faruk Pasic, Mariam Mussbah, Stefan Schwarz +3
Future wireless communications will rely on multiple-input multiple-output (MIMO) beamforming operating at millimeter wave (mmWave) frequency bands to deliver high data rates. To s…
Distributed MIMO Positioning: Fundamental Limit Analysis and User Tracking Framework Design
Yingjie Xu, Xuesong Cai, Ali Al-Ameri +2
This paper presents a comprehensive study on the 3D positioning capabilities in distributed multiple-input multiple-output (MIMO) systems. Unlike previous studies that mainly rely…
3D Cooperative User Tracking for Distributed Integrated Sensing and Communication
Yingjie Xu, Xuesong Cai, Michiel Sandra +2
As integrated sensing and communication (ISAC) becomes an integral part of 6G networks, distributed ISAC (DISAC) is expected to enhance both sensing and communication performance t…
Illuminating the Path: Attention-Assisted Beamforming and Predictive Insights in 5G NR Systems
Dino Pjanić, Guoda Tian, Andres Reial +3
Artificial intelligence advances have recently influenced wireless communications, including beam management in fifth-generation (5G) new radio systems. AI-driven models and algori…
Interacting Object-Enabled Clustering and Characterization of Distributed MIMO Channels
Yingjie Xu, Michiel Sandra, Xuesong Cai +2
Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, emerges as a promising technology for sixth-generation (6G) systems to support uniform cove…
Experimental Analysis of Multipath Characteristics in Indoor Distributed Massive MIMO Channels
Yingjie Xu, Xuesong Cai, Sara Willhammar +1
Distributed multiple-input multiple-output (MIMO), also known as cell-free massive MIMO, has emerged as a promising technology for sixth-generation (6G) wireless networks. This let…
Low-Complexity Optimization of Antenna Switching Schemes for Dynamic Channel Sounding
Juan Sanchez, Xuesong Cai, Ali Al-Ameri +1
Understanding wireless channels is crucial for the design of wireless systems. For mobile communication, sounders and antenna arrays with short measurement times are required to si…
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…
A Measurement-Based Spatially Consistent Channel Model for Distributed MIMO in Industrial Environments
Christian Nelson, Sara Willhammar, Fredrik Tufvesson
Future wireless communication systems are envisioned to support ultra-reliable and low-latency communication (URLLC), which will enable new applications such as compute offloading,…
Spatial separation of closely-spaced users in measured distributed massive MIMO channels
Yingjie Xu, Michiel Sandra, Xuesong Cai +2
Aiming for the sixth generation (6G) wireless communications, distributed massive multiple-input multiple-output (MIMO) systems hold significant potential for spatial multiplexing.…
Dynamic User Grouping based on Location and Heading in 5G NR Systems
Dino Pjanić, Korkut Emre Arslantürk, Xuesong Cai +1
User grouping based on geographic location in fifth generation (5G) New Radio (NR) systems has several applications that can significantly improve network performance, user experie…
Attention-aided Outdoor Localization in Commercial 5G NR Systems
Guoda Tian, Dino Pjanić, Xuesong Cai +2
The integration of high-precision cellular localization and machine learning (ML) is considered a cornerstone technique in future cellular navigation systems, offering unparalleled…
Channel Performance Metrics and Evaluation for XR Head-Mounted Displays with mmWave Arrays
Alexander Marinek, Xuesong Cai, Lieven De Strycker +2
Millimeter-wave (mmWave) technology holds the potential to revolutionize head-mounted displays (HMDs) by enabling high-speed wireless communication with nearby processing nodes, wh…
Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements
Benjamin J. B. Deutschmann, Christian Nelson, Mikael Henriksson +5
Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access…
A Wideband Distributed Massive MIMO Channel Sounder for Communication and Sensing
Michiel Sandra, Christian Nelson, Xuhong Li +3
Channel sounding is a vital step in understanding wireless channels for the design and deployment of wireless communication systems. In this paper, we present the design and implem…
A Belief Propagation Algorithm for Multipath-based SLAM with Multiple Map Features: A mmWave MIMO Application
Xuhong Li, Xuesong Cai, Erik Leitinger +1
In this paper, we present a multipath-based simultaneous localization and mapping (SLAM) algorithm that continuously adapts mulitiple map feature (MF) models describing specularly…
Distributed MIMO Measurements for Integrated Communication and Sensing in an Industrial Environment
Christian Nelson, Xuhong Li, Aleksei Fedorov +2
Many concepts for future generations of wireless communication systems use coherent processing of signals from many distributed antennas. The aim is to improve communication reliab…
Hybrid Precoder Design for Angle-of-Departure Estimation with Limited-Resolution Phase Shifters
Huiping Huang, Musa Furkan Keskin, Henk Wymeersch +4
Hybrid analog-digital beamforming stands out as a key enabler for future communication systems with a massive number of antennas. In this paper, we investigate the hybrid precoder…
Vision-Based Reconfigurable Intelligent Surface Beam Tracking for mmWave Communications
Juan Sanchez, Xuesong Cai, Fredrik Tufvesson
Reconfigurable intelligent surfaces have emerged as a technology with the potential to enhance wireless communication performance for 5G and beyond. However, the technology comes w…