30 citations · 66 across the 54 of their papers we have counts for
21 papers · 1 filter
Spatially Consistent Air-to-Ground Channel Modeling and Simulation via 3D Shadow Projections
Evgenii Vinogradov, Aymen Fakhreddine, Abdul Saboor +2
We present an approach for spatially-consistent semi-deterministic Air-to-Ground (A2G) channel modeling in Unmanned Aerial Vehicle-assisted networks. We use efficient 3D building s…
Resource Allocation in Hybrid Radio-Optical IoT Networks using GNN with Multi-task Learning
Aymen Hamrouni, Sofie Pollin, Hazem Sallouha
This paper addresses the problem of dual-technology scheduling in hybrid Internet-of-Things (IoT) networks that integrate Optical Wireless Communication (OWC) with Radio Frequency…
Trajectory-Aware Air-to-Ground Channel Characterization for Low-Altitude UAVs Using MaMIMO Measurements
Abdul Saboor, Zhuangzhuang Cui, Achiel Colpaert +3
This paper presents a comprehensive measurement-based trajectory-aware characterization of low-altitude Air-to-Ground (A2G) channels in a suburban environment. A 64-element Massive…
Approximation of the Range Ambiguity Function in Near-field Sensing Systems
Marcin Wachowiak, André Bourdoux, Sofie Pollin
This paper investigates the range ambiguity function of near-field systems where bandwidth and near-field beamfocusing jointly determine the resolution. First, the general matched…
Near-Field Spatial non-Stationary Channel Estimation: Visibility-Region-HMM-Aided Polar-Domain Simultaneous OMP
Thibaut Ceulemans, Cel Thys, Robbert Beerten +2
This work focuses on channel estimation in extremely large aperture array (ELAA) systems, where near-field propagation and spatial non-stationarity introduce complexities that hind…
CASH: Context-Aware Smart Handover for Reliable UAV Connectivity on Aerial Corridors
Abdul Saboor, Zhuangzhuang Cui, Achiel Colpaert +2
Urban Air Mobility (UAM) envisions aerial corridors for Unmanned Aerial Vehicles (UAVs) to reduce ground traffic congestion by supporting 3D mobility, such as air taxis. A key chal…
Analytical Modeling of Batteryless IoT Sensors Powered by Ambient Energy Harvesting
Jimmy Fernandez Landivar, Andrea Zanella, Ihsane Gryech +2
This paper presents a comprehensive mathematical model to characterize the energy dynamics of batteryless IoT sensor nodes powered entirely by ambient energy harvesting. The model…
Exploring O-RAN Compression Techniques in Decentralized Distributed MIMO Systems: Reducing Fronthaul Load
Mostafa Rahmani, Junbo Zhao, Vida Ranjbar +4
This paper explores the application of uplink fronthaul compression techniques within Open RAN (O-RAN) to mitigate fronthaul load in decentralized distributed MIMO (DD-MIMO) system…
ASTARS empowered Satellite Positioning Approach for Urban Canyons and Indoor Environments
Yu Zhang, Xin Sun, Tianwei Hou +4
To mitigate the loss of satellite navigation signals in urban canyons and indoor environments, we propose an active simultaneous transmitting and reflecting reconfigurable intellig…
Cell-Free Massive MIMO under a Non-Linear Power Amplifier Consumption Model
Robbert Beerten, Vida Ranjbar, Hazem Sallouha +1
Existing works on Cell-Free Massive MIMO primarily focus on optimising system throughput and energy efficiency under high-traffic scenarios with only a limited focus on variable us…
Sizing Antenna Arrays for Near-field Communication and Sensing
Marcin Wachowiak, André Bourdoux, Sofie Pollin
This paper presents key performance metrics for near-field communication and sensing systems and their scaling behavior as a function of the antenna array aperture. Analytical expr…
Analysis of the Range Ambiguity Function of Narrowband Near-field MIMO Sensing
Marcin Wachowiak, André Bourdoux, Sofie Pollin
This paper compares the sensing performance of a narrowband near-field system across several practical antenna array geometries and SIMO/MISO and MIMO configurations. For identical…
Performance Assessment of Hybrid and Digital Irregular Array Configurations for Beyond 100-GHz Multi-User MIMO Systems
Yigit Ertugrul, Kamil Yavuz Kapusuz, Claude Desset +1
The performance of irregular phased array architectures is assessed in the context of multi-user multiple-input multiple-output (MU-MIMO) communications operating beyond 100 GHz. R…
Evaluation of 3D Terrestrial and Aerial Spectrum Sharing with Massive MIMO Systems
Achiel Colpaert, Zhuangzhuang Cui, Sofie Pollin
Connecting aerial and terrestrial users with a single base station (BS) is increasingly challenging due to the rising number of aerial users like unmanned aerial vehicles (UAVs). T…
Aliased Time-Modulated Array OFDM Transmit System
Marcin Wachowiak, Kamil Yavuz Kapusuz, André Bourdoux +1
The time-modulated array is a simple array architecture in which each antenna is connected to an RF switch that serves as a modulator. The phase shift is achieved by digitally cont…
Frequency Diverse Array OFDM Transmit System with Partial Overlap in Frequency
Marcin Wachowiak, André Bourdoux, Sofie Pollin
A frequency-diverse array (FDA) is an alternative array architecture in which each antenna is preceded by a mixer instead of a phase shifter. The mixers introduce a frequency offse…
BS-Breath: Respiration Sensing with Cell-free Massive MIMO
Haoqiu Xiong, Robbert Beerten, Zhuangzhuang Cui +2
This paper demonstrates the feasibility of respiration pattern estimation utilizing a communication-centric cellfree massive MIMO OFDM Base Station (BS). The sensing target is typi…
Beamforming with Oversampled Time-Modulated Arrays
Marcin Wachowiak, André Bourdoux, Sofie Pollin
The time-modulated array (TMA) is a simple array architecture in which each antenna is connected via a multi-throw switch. The switch acts as a modulator switching state faster tha…
Frequency Diverse Array OFDM System for Joint Communication and Sensing
Marcin Wachowiak, André Bourdoux, Sofie Pollin
The frequency-diverse array (FDA) offers a time-varying beamforming capability without the use of phase shifters. The autoscanning property is achieved by applying a frequency offs…
Path Loss Modelling for UAV Communications in Urban Scenarios with Random Obstacles
Abdul Saboor, Zhuangzhuang Cui, Evgenii Vinogradov +1
Path Loss (PL) is vital to evaluate the performance of Unmanned Aerial Vehicles (UAVs) as Aerial Base Stations (ABSs), particularly in urban environments with complex propagation d…
Empirical Line-of-Sight Probability Modeling for UAVs in Random Urban Layouts
Abdul Saboor, Zhuangzhuang Cui, Evgenii Vinogradov +1
Accurate Probability of Line-of-Sight (PLoS) modeling is important in evaluating the performance of Unmanned Aerial Vehicle (UAV)-based communication systems in urban environments,…