5 citations · 11 across the 20 of their papers we have counts for
19 papers · 1 filter
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…
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…