52 citations · 87 across the 38 of their papers we have counts for
38 papers
Towards Energy-Neutral IoT Sensors: Low-Cost Chirp-Based Backscattering Node Using a COTS Microcontroller and Multi-Load Front-End
Tijl Schepens, Liesbet Van der Perre, Gilles Callebaut
Backscatter communication has proven to be a key enabler for energy-neutral sensor nodes in the IoT. It allows ultra-low-power nodes to transmit sensor data by reflecting incident…
Long-Range Backscatter: A Bottom-Up Approach
Tijl Schepens, Gilles Callebaut, Liesbet Van der Perre
Continued progress towards energy-neutral Internet of Things (IoT) nodes expose the wireless communication link as the dominant energy bottleneck. While low-power wide-area network…
Towards Sustainable 6G: A Holistic View of Trade-offs and Enablers
Mattia Merluzzi, Olivier Bouchet, Ali Balador +9
The sixth generation of mobile networks (6G) can play a central role in shaping a sustainable future, the most compelling contemporary challenge. Connecting the unconnected, reduci…
RF-Powered Batteryless Plant Movement Sensor for Precision Agriculture
Jona Cappelle, Jarne Van Mulders, Sarah Goossens +5
Precision agriculture demands non-invasive, energy-efficient, and sustainable plant monitoring solutions. In this work, we present the design and implementation of a lightweight, b…
Distributed Deployment and Dual-Frequency Concepts to Strengthen Sub-THz Wireless Systems
Liesbet Van der Perre, Gilles Callebaut, Thomas Eriksson +5
The vast bandwidth available at sub-THz frequencies holds great promise for high-speed wireless access, precise localization, and advanced sensing applications. However, fundamenta…
Physically Large Apertures for Wireless Power Transfer: Performance and Regulatory Aspects
Benjamin J. B. Deutschmann, Ulrich Muehlmann, Ahmet Kaplan +7
Wireless power transfer (WPT) is a promising service for the Internet of Things, providing a cost-effective and sustainable solution to deploy so-called energy-neutral devices on a…
Experimental Study on the Effect of Synchronization Accuracy for Near-Field RF Wireless Power Transfer in Multi-Antenna Systems
Gilles Callebaut, Jarne Van Mulders, Bert Cox +4
Wireless power transfer (WPT) technologies hold promise for enhancing device autonomy, particularly for energy-limited IoT systems. This paper presents experimental results on cohe…
Single versus Multi-Tone Wireless Power Transfer with Physically Large Array
Jarne Van Mulders, Benjamin J. B. Deutschmann, Geoffrey Ottoy +4
Distributed beamforming is a key enabler to provide power wirelessly to a massive amount of energy-neutral devices (ENDs). However, without prior information and fully depleted END…
How to Perform Distributed Precoding to Wirelessly Power Shelf Labels: Signal Processing and Measurements
Gilles Callebaut, Jarne Van Mulders, Bert Cox +3
Wireless power transfer (WPT) has garnered increasing attention due to its potential to eliminate device-side batteries. With the advent of (distributed) multiple-input multiple-ou…
MmWave for Extended Reality: Open User Mobility Dataset, Characterisation, and Impact on Link Quality
Alexander Marinsek, Sam De Kunst, Gilles Callebaut +2
User mobility in extended reality (XR) can have a major impact on millimeter-wave (mmWave) links and may require dedicated mitigation strategies to ensure reliable connections and…
IoT on the Road to Sustainability: Vehicle or Bandit?
Jona Cappelle, Liesbet Van der Perre, Emma Fitzgerald +5
The Internet of Things (IoT) can support the evolution towards a digital and green future. However, the introduction of the technology clearly has in itself a direct adverse ecolog…
Energy Reduction in Cell-Free Massive MIMO through Fine-Grained Resource Management
Özlem Tuğfe Demir, Lianet Méndez-Monsanto, Nicola Bastianello +2
The physical layer foundations of cell-free massive MIMO (CF-mMIMO) have been well-established. As a next step, researchers are investigating practical and energy-efficient network…
Keeping Energy-Neutral Devices Operational: a Coherent Massive Beamforming Approach
Jarne Van Mulders, Bert Cox, Benjamin J. B. Deutschmann +3
Keeping the batteries on the shelf: this is the holy grail for low-cost Internet of Things (IoT) nodes. In this paper we study the potential of radio frequency (RF)-based wireless…
Towards Practical Cell-Free 6G Network Deployments: An Open-Source End-to-End Ray Tracing Simulator
William Tärneberg, Aleksei Fedorov, Gilles Callebaut +2
The advent of 6G wireless communication marks a transformative era in technological connectivity, bringing forth challenges and opportunities alike. This paper unveils an innovativ…
An Open Dataset Storage Standard for 6G Testbeds
Gilles Callebaut, Michiel Sandra, Christian Nelson +7
The emergence of sixth-generation (6G) networks has spurred the development of novel testbeds, including sub-THz networks, cell-free systems, and 6G simulators. To maximize the ben…
6G Radio Testbeds: Requirements, Trends, and Approaches
Gilles Callebaut, Liang Liu, Thomas Eriksson +3
The proof of the pudding is in the eating - that is why 6G testbeds are essential in the progress towards the next generation of wireless networks. Theoretical research towards 6G…
Grant-Free Random Access of IoT devices in Massive MIMO with Partial CSI
Gilles Callebaut, François Rottenberg, Liesbet Van der Perre +1
The number of wireless devices is drastically increasing, resulting in many devices contending for radio resources. In this work, we present an algorithm to detect active devices f…
Multi-RAT IoT -- What's to Gain? An Energy-Monitoring Platform
Guus Leenders, Gilles Callebaut, Liesbet Van der Perre +1
Multiple LPWANs have been rolled out to support the variety of IoT applications that are crucial to the ongoing digital transformation. These networks vary largely in terms of qual…
The Z3RO Family of Precoders Cancelling Nonlinear Power Amplification Distortion in Large Array Systems
François Rottenberg, Gilles Callebaut, Liesbet Van der Perre
Large array systems use a massive number of antenna elements and clever precoder designs to achieve an array gain at the user location. These precoders require linear front-ends, a…
Dynamic Federations for 6G Cell-Free Networking: Concepts and Terminology
Gilles Callebaut, William Tärneberg, Liesbet Van der Perre +1
Cell-Free networking is one of the prime candidates for 6G networks. Despite being capable of providing the 6G needs, practical limitations and considerations are often neglected i…
IoT with a Soft Touch: A Modular Remote Sensing Platform for STE(A)M Applications
Jona Cappelle, Geoffrey Ottoy, Sarah Goossens +4
Besides wide attraction in the industry, IoT is being used to advance STEM and STEAM education across a range of education levels. This work presents a remote sensing platform, nam…
Techtile -- Open 6G R&D Testbed for Communication, Positioning, Sensing, WPT and Federated Learning
Gilles Callebaut, Jarne Van Mulders, Geoffrey Ottoy +4
New concepts for next-generation wireless systems are being developed. It is expected that these 6G and beyond systems will incorporate more than only communication, but also sensi…
Measurement-Based Validation of Z3RO Precoder to Prevent Nonlinear Amplifier Distortion in Massive MIMO Systems
Thomas Feys, Gilles Callebaut, Liesbet Van der Perre +1
In multiple input multiple output (MIMO) systems, precoding allows the base station to spatially focus and multiplex signals towards each user. However, distortion introduced by po…
Aerial Energy Provisioning for Massive Energy-Constrained IoT by UAVs
Jarne Van Mulders, Guus Leenders, Gilles Callebaut +2
Autonomy of devices is a major challenge in many Internet of Things (IoT) applications, in particular when the nodes are deployed remotely or difficult to assess places. In this pa…