30 citations · 66 across the 54 of their papers we have counts for
39 papers · 1 filter
Comparative Analysis and Behavioral Modelling of Power Amplifiers in FR3
Cel Thys, Rodney Martinez Alonso, Ali H Alsarraf +3
Power amplifier (PA) nonlinearity is a critical transmitter impairment in the upper mid-band (7 GHz to 24 GHz), designated as Frequency Range 3 (FR3) in emerging 6G standardisation…
Analysis and Approximation of Spatially Wideband Array Factor of Thinned Antenna Arrays
Marcin Wachowiak, André Bourdoux, Sofie Pollin
This work investigates the spatially wideband (SWB) array factor (AF) of linear thinned antenna arrays. The SWB AF is formulated as a matched filter and expressed as a spatially va…
RT-VSS: In-House Ray Tracing for Vital Signs Sensing in FR3 Band
Rudranil Chattopadhyay, Zhuangzhuang Cui, Achiel Colpaert +1
Vital Signs Sensing, enabled by the evolution of wireless communications, is inherently challenging as the chest's micro-Doppler signatures can be corrupted by multipath, body move…
Analysis and Approximation of a Spatially Wideband Antenna Array Factor
Marcin Wachowiak, André Bourdoux, Sofie Pollin
This work investigates the spatially wideband (SWB) antenna array factor (AF) of uniform linear arrays. First, the SWB AF approximation is derived for narrowband (NB) signals and a…
Near-Field Velocity Estimation and Doppler-Aware Localization in OFDM Massive MIMO
Qing Zhang, Dario Tagliaferri, Robbert Beerten +3
In Orthogonal Frequency Division Multiplexing (OFDM)-based massive Multiple-Input Multiple-Output (MIMO) near-field (NF) sensing, target motion induces an antenna-dependent bistati…
Depthwise Separable CNN for D-MIMO Indoor Localization with Data Reduction
Georgios Mystriotis, Rodney Martinez Alonso, Achiel Colpaert +1
Indoor localization using Distributed Multiple-Input Multiple-Output (D-MIMO) and machine learning (ML) achieves sub-centimeter accuracy but faces midhaul capacity bottlenecks when…
Low Complexity Neural Network Digital Predistortion of Wideband Power Amplifiers through Feature Selection
Cel Thys, Rodney Martinez Alonso, Ali H Alsarraf +2
Due to the continuous increase in communication bandwidth and the use of highly efficient yet nonlinear power amplifiers, Digital Predistortion (DPD) algorithms are becoming increa…
Multi-/Uni-Cast Non-Orthogonal Multiple Access-Based INAC
Yaoyu Zhang, Xin Sun, Tianwei Hou +4
With the rapid development of satellite communication and navigation, there is an urgent need to integrate both technologies to achieve reliable communication and precise navigatio…
Joint Mobile User Positioning and Passive Target Sensing using Optimized Sequential Beamforming
Aymen Hamrouni, Sofie Pollin, Hazem Sallouha
Integrated sensing and communication (ISAC) relies on monostatic sensing (MS) and bistatic positioning (BP) to enable comprehensive environmental awareness and user localization. H…
Disaggregated multi-domain interference classification for O-RAN
Dieter Verbruggen, Hazem Sallouha, Sofie Pollin
Spectrum sharing and dynamic spectrum reuse are becoming increasingly critical in modern wireless networks to address spectrum scarcity. However, these techniques inevitably increa…
Sequential Processing Strategies in Fronthaul Constrained Cell-Free Massive MIMO Networks
Vida Ranjbar, Robbert Beerten, Marc Moonen +1
In a cell-free massive MIMO (CFmMIMO) network with a daisy-chain fronthaul, the amount of information that each access point (AP) needs to communicate with the next AP in the chain…
Dualband OFDM Delay Estimation for Multi-Target Localization
Jialun Kou, Achiel Colpaert, Zhuangzhuang Cui +1
Integrated localization and communication systems aim to reuse communication waveforms for simultaneous data transmission and localization, but delay resolution is fundamentally li…
Robust Localization in OFDM-Based Massive MIMO through Phase Offset Calibration
Qing Zhang, Adham Sakhnini, Robbert Beerten +4
Accurate localization in Orthogonal Frequency Division Multiplexing (OFDM)-based massive Multiple-Input Multiple-Output (MIMO) systems depends critically on phase coherence across…
Experimental Validation of SBFD ISAC in an FR3 Distributed SIMO Testbed
Bixing Yan, Kwadwo Mensah Obeng Afrane, Achiel Colpaert +3
Integrated sensing and communication (ISAC) is a key enabler for future radio networks. This paper presents a sub-band full-duplex (SBFD) ISAC system that assigns non-overlapping O…
Inter-Cell Interference Rejection Based on Ultrawideband Walsh-Domain Wireless Autoencoding
Rodney Martinez Alonso, Cel Thys, Cedric Dehos +2
This paper proposes a novel technique for rejecting partial-in-band inter-cell interference (ICI) in ultrawideband communication systems. We present the design of an end-to-end wir…
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…
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…
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…
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…