A5039982512- Millimeter-Wave Propagation and Modeling
- Antenna Design and Analysis
- Advanced MIMO Systems Optimization
- Antenna Design and Optimization
- Indoor and Outdoor Localization Technologies
- Electromagnetic Compatibility and Measurements
- Power Line Communications and Noise
- UAV Applications and Optimization
- Telecommunications and Broadcasting Technologies
- Wireless Body Area Networks
- Advanced Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- Radio Wave Propagation Studies
- Microwave Engineering and Waveguides
- Full-Duplex Wireless Communications
- Advanced SAR Imaging Techniques
- Radar Systems and Signal Processing
- Video Surveillance and Tracking Methods
- Non-Invasive Vital Sign Monitoring
- Direction-of-Arrival Estimation Techniques
- Radio Frequency Integrated Circuit Design
- Speech and Audio Processing
- Microwave Imaging and Scattering Analysis
- Advanced Antenna and Metasurface Technologies
- Molecular Communication and Nanonetworks
University of Twente
2019-2025
KU Leuven
2022-2025
Shanghai University of Engineering Science
2025
University of Science and Technology of China
2024
China National Petroleum Corporation (China)
2024
Xi’an University of Posts and Telecommunications
2022
Aalborg University
2020
Southern University of Science and Technology
2018-2019
Ghent University
2018
UCLouvain
2017-2018
Herein, we focus on convergent 6G communication, localization and sensing systems by identifying key technology enablers, discussing their underlying challenges, implementation issues, recommending potential solutions. Moreover, discuss exciting new opportunities for integrated applications, which will disrupt traditional design principles revolutionize the way live, interact with our environment, do business. Regarding enabling technologies, continue to develop towards even higher frequency...
This white paper explores future localization and sensing opportunities for beyond 5G wireless communication systems by identifying key technology enablers discussing their underlying challenges, implementation issues, potential solutions. In addition, we present exciting new applications, which will disrupt traditional design principles revolutionize the way live, interact with our environment, do business. Following trend initiated in NR systems, 6G continue to develop towards even higher...
With the rapid development and broad applications of unmanned aerial vehicle (UAV) based wireless stations in sky, fundamental understanding characterization realistic air-to-ground (A2G) communication link properties are crucial. In this paper, a UAV-aided channel sounder with real-time processing hardware system is developed for highly dynamic non-stationary A2G measurements. system, global positioning (GPS) -based triggering signal designed, equivalent antenna pattern affected by UAV...
In this paper, a 3D geometry-based double-spherical terahertz (THz) channel model is proposed for ultra massive multiple-input multiple-output (MIMO) communications. To reflect real THz MIMO communications, the characteristic of nano-material array antenna and high loss bands are considered in modeling. Based on stochastic (GBSM), power delay profile (PDP), space-time-frequency correlation function, Doppler spectral density derived analyzed. Furthermore, validated by comparing simulated...
In recent years wireless propagation channel research has paid considerable attention to dense multipath, which is an indispensable part of channels and may significantly contribute the received power in variety environments frequency bands. Mathematical representation multipath different from that specular components (SCs) due its distinct mechanism impact on system performance. Therefore, accurate understanding modeling together with SCs are important for parametric estimation reliable...
Millimeter-wave (MmWave) channel characteristics are quite different from sub-6 GHz frequency bands. The major differences include higher path loss and sparser multipath components (MPCs), resulting in more significant time-varying mmWave channels. It is difficult to characterize the of channels through statistical models, e.g. slope-intercept models for lognormal delay spread angular spread. Therefore, highly accurate modeling prediction necessary deployment communication systems. In this...
Background Efficient and reliable diagnosis of early osteonecrosis the femoral head (ONFH) based on MRI is crucial for formulation clinical treatment plans. This study aimed to apply artificial intelligence (AI) achieve automatic visualization ONFH, thereby improving success rate hip-preserving treatments. Method retrospective constructed a multicenter dataset using data 381 heads from 209 patients with ONFH collected four institutions (including 239 cases 142 non-ONFH cases). The was...
This paper demonstrates the feasibility of respiration pattern estimation utilizing a communication-centric cellfree massive MIMO OFDM Base Station (BS). The sensing target is typically positioned near User Equipment (UE), which transmits uplink pilots to BS. Our results demonstrate potential systems for accurate and reliable vital sign estimation. Initially, we adopt single antenna solution that combines multiple subcarriers breathing projection align 2D complex displacement dimension....
This paper proposes a hybrid modeling approach for the prediction of room-to-room radio propagation channel. The model combines ray tracing (RT) with graph (PG). PG vertices are obtained at each room by RT assumption that receive antenna (or transmit antenna) virtually locates on surface separating wall between two rooms. Rays transmitted from one to other through deterministically calculated Snell's law refraction. Predictions proposed compared measurement data an office-to-office scenario....
This article performs extensive channel measurements and characteristics analysis to investigate large-scale fading (LSF) small-scale (SSF) of wireless local area network (WLAN) channels in large indoor office environments. Multifrequency single-input–single-output (SISO) are conducted at 3, 5.5, 6.5 GHz under the same conditions explore frequency dependence LSF, delay spread (DS), <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">...
The development of sixth-generation (6G) wireless communication systems brings significant challenges in channel modeling. Conducting measurements for 6G communications is highly expensive and cannot cover all scenarios frequency bands. Moreover, existing conventional models fail to accurately predict characteristics unknown band. As a result, predictive modeling has emerged as promising solution addressing these In this study, we propose domain model that combines an autoencoder with...
Unmanned aerial vehicles (UAVs) have been widely used in both military and civilian applications, where a stable communication link is vital for safe flight control robust data transmission. To develop reliable UAV system, it necessary to deeply understand the channel characteristics establish accurate models. Channel sounding most effective way obtain realistic validate theoretical model. However, studies on are still insufficient terms of system design processing due complexity developing...
This paper proposes a novel approach to extracting the narrowband propagation channel from communication link by de-embedding impact of antennas. In proposed approach, mode-to-mode mapping matrix M, which is expression in spherical vector wave domain, estimated applying pseudo-inverse computation transfer functions with dedicated arrays. The M truncated and only dominant modes within spatial bandwidth fields radiated finite volume array are considered. Two types investigated: 1) an ideal...
This paper evaluates the performances of channel emulation algorithms in multiprobe anechoic chamber (MPAC) by using plane wave (PW) and spherical vector (SVW) theories. Channel MPAC enables over-the-air (OTA) testing wireless devices under realistic propagation scenarios, through setting excitation voltages probes utilizing polarized radiation patterns, locations, orientations probe antennas to emulate desired fields test zone. Accurate radio target scenario guarantees that device (DUT) be...
This paper explores the feasibility of using multiple-input multiple-output (MIMO) radio channel properties to passively detect and localize multiple humans in indoor environments. We propose utilize unique reverberation characteristics channels for purpose detecting, power angular delay profile (PADP) localizing humans. On one hand, time corresponds with decay rate multipath a closed or partially cavity, varies change number moving relative antennas at link ends. other PADP is proposed be...
Wireless-based human activity recognition has become an essential technology that enables contact-free human–machine and human–environment interactions. In this article, we consider multitarget tracking (MTT) based on available communication systems. A radar-like prototype is built upon a sub-6-GHz distributed massive multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system. Specifically, the raw channel state information (CSI) calibrated in frequency...
This paper proposes a genetic algorithm (GA) combined with ray tracer to generate cell-free topology of massive MIMO (mMIMO) for the optimal focusing performance serving multiple users. The realistic hardware impairment, instance non-ideal power amplifier, is taken into account system modeling and optimization. To best our knowledge, this first attempt apply GA in optimizing hardware-impaired multi-user mMIMO. Although demonstrated numerical analysis indoor scenario, proposed approach...