Publicaties
A survey of on-body antenna arrays : future improvements, new designs, and lessons learned Universiteit Gent
This manuscript presents a survey of the existing literature on on-body antenna arrays. They can be used to enable wireless communication to and from different on-body nodes in a wireless body area network (WBAN) and are also used in medical applications. The design process and the required characteristics of on-body antenna arrays are discussed. On-body antenna arrays should be small, lightweight, and low profile to ensure user comfort. The ...
Characterization of vegetation loss and impact on network performance at V-band frequencies Universiteit Gent
Wireless communication systems using millimeter-wave (mmWave) frequencies can be used for high-throughput applications such as fixed wireless access, where static line-of-sight links are used to provide internet connectivity. The directive antennas are typically mounted on building facades above street level. Therefore, the wireless links are mainly subject to attenuation due to atmospheric absorption, rain, and vegetation. In this letter, we ...
MmWave physical layer network modeling and planning for fixed wireless access applications Universiteit Gent
The large bandwidths that are available at millimeter-wave frequencies enable fixed wireless access (FWA) applications, in which fixed point-to-point wireless links are used to provide internet connectivity. In FWA networks, a wireless mesh is created and data are routed from the customer premises equipment (CPE) towards the point of presence (POP), which is the interface with the wired internet infrastructure. The performance of the wireless ...
Conformal in-body bolus antenna for precision goat farming Universiteit Gent
Precision livestock farming has seen an increased interest in the past years. To enable this technology, solid ground work needs to be done to roll-out the system. One major pillar of the ground work is the sensor to base station communication link. In this work, we present an in-body conformal bolus antenna to improve the wireless capability of the sensor nodes, as well in efficiency as in performance. Throughout the paper, we explain the ...
Measurement of the V2I channel in cell-free vehicular networks with the distributed MaMIMOSA channel sounder Universiteit Gent
In this paper, we present a small, yet realistic, vehicular cell-free massive MIMO (multiple-input multiple-output) architecture deployed at the University of Lille in a typical suburban environment under both Line-of-Sight (LOS) and obstructed LOS (OLOS) shadowing conditions. The radio channels were acquired with a distributed RF-over-Fiber (RoF) upgrade of the real-time channel sounder MaMIMOSA. The system operates at 5.89 GHz with an 80 MHz ...
Optimal frequency and wireless power budget for miniature receivers in obese people Universiteit Gent
This study investigates wireless power transfer for deep in-body receivers, determining the optimal frequency, power budget, and design for the transmitter and receiver. In particular, the focus is on small, in-body receivers at large depths up to 20 cm for obese patients. This enables long-term monitoring of the gastrointestinal tract for all body types. Numerical simulations are used to investigate power transfer and losses as a function of ...
Evaluating 60 GHz FWA deployments for urban and rural environments in Belgium Universiteit Gent
Fixed wireless access (FWA) provides a solution to compete with fiber deployment while offering reduced costs by using the mmWave bands, including the unlicensed 60 GHz one. This paper evaluates the deployment of FWA networks in the 60 GHz band in realistic urban and rural environment in Belgium. We developed a network planning tool that includes novel backhaul based on the IEEE 802.11ay standard with multi-objective capabilities to maximise the ...
White spaces pattern finding and inference based on machine learning for multi-frequency spectrum footprints Universiteit Gent
Spectrum surveys performed worldwide demonstrate that the spectrum utilization efficiency is less than 0.25. Therefore, the traditional long-term licensed spectrum allocation by regulators is not sustainable. Although dynamic spectrum access networks allow increasing the efficiency of spectrum utilization, coexistence is still a major problem. In this paper, we investigate the capability of machine learning for estimating the white space ...
Comparing familiar with inspiring recommendations to assist people in moving more Universiteit Gent
Sufficient physical activity is crucial for people’s health and well-being. However, not enough people attain the weekly minimum of 150 minutes. Since current mobile health systems are not optimal to motivate and assist people to move more, this study investigates the effect of personalized suggestions generated by two types of recommender system algorithms: content-based (which provide more familiar recommendations, relevant to existing ...