Search Results for author: Xuesong Cai

Found 12 papers, 0 papers with code

A Wideband Distributed Massive MIMO Channel Sounder for Communication and Sensing

no code implementations18 Mar 2024 Michiel Sandra, Christian Nelson, Xuhong LI, Xuesong Cai, Fredrik Tufvesson, Anders J Johansson

The results demonstrate the great potential of the presented sounding system for providing high-quality radio channel measurements, contributing to high-resolution channel estimation, characterization, and active and passive sensing in realistic and dynamic scenarios.

Super-Resolution

A Belief Propagation Algorithm for Multipath-based SLAM with Multiple Map Features: A mmWave MIMO Application

no code implementations15 Mar 2024 Xuhong LI, Xuesong Cai, Erik Leitinger, Fredrik Tufvesson

We develop a Bayesian model for sequential detection and estimation of interacting MF model parameters, MF states and mobile agent's state including position and orientation.

Simultaneous Localization and Mapping

Impact of Array Configuration on Head-Mounted Display Performance at mmWave Bands

no code implementations12 Dec 2023 Alexander Marinšek, Xuesong Cai, Lieven De Strycker, Fredrik Tufvesson, Liesbet Van der Perre

DE gain is a significant factor in understanding system performance since mmWave channel sparsity and eigenmode imbalance often results in provisioning the majority of the available power to the DE.

Vision-Based Reconfigurable Intelligent Surface Beam Tracking for mmWave Communications

no code implementations27 Oct 2023 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.

A Hybrid Antenna Switching Scheme for Dynamic Channel Sounding

no code implementations20 Apr 2023 Ali Al-Ameri, Jaeyoung Park, Juan Sanchez, Xuesong Cai, Fredrik Tufvesson

The primary purpose is to maintain the estimation accuracy of angles of MPCs while decreasing the resolution of Doppler frequencies for minimized complexity of channel parameter estimation.

Enhanced Effective Aperture Distribution Function for Characterizing Large-Scale Antenna Arrays

no code implementations23 Sep 2022 Xuesong Cai, Meifang Zhu, Aleksei Fedorov, Fredrik Tufvesson

To overcome the issues, an enhanced EADF is proposed with a low complexity that is intrinsically determined by the characteristic of each array element rather than the array aperture.

Toward 6G with Terahertz Communications: Understanding the Propagation Channels

no code implementations16 Sep 2022 Xuesong Cai, Xiang Cheng, Fredrik Tufvesson

This article aims at providing insights for a comprehensive understanding of terahertz (THz) propagation channels.

Dynamic mmWave Channel Emulation in a Cost-Effective MPAC with Dominant-Cluster Concept

no code implementations21 Aug 2020 Xuesong Cai, Yang Miao, Jinxing Li, Fredrik Tufvesson, Gert Frølund Pedersen, Wei Fan

In this contribution, we firstly illustrate the dominant-cluster(s) concept, where the non-dominant clusters in the mmWave channels are pruned, for mmWave 5G devices applying massive MIMO beamforming.

A Centralized and Scalable Uplink Power Control Algorithm in Low SINR Scenarios

no code implementations14 Aug 2020 Xuesong Cai, István Kovács, Jeroen Wigard, Preben Mogensen

A preliminary case study of uplink UAV communications also shows the potential of the algorithm.

Air-to-Ground Channel Characterization for Low-Height UAVs in Realistic Network Deployments

no code implementations22 Jul 2020 José Rodríguez-Piñeiro, Tomás Domínguez-Bolaño, Xuesong Cai, Zeyu Huang, Xuefeng Yin

Due to the decrease in cost, size and weight, \acp{UAV} are becoming more and more popular for general-purpose civil and commercial applications.

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