12 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…
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…
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…