no code implementations • 4 Dec 2024 • Rizqi Hersyandika, Qing Wang, Yang Miao, Sofie Pollin
Evaluation using actual HMD movement data demonstrates the effectiveness of our approach, showcasing a reduction in outage rates of up to 13% compared to quasi-omnidirectional reception with two serving APs, and a 17% decrease compared to steerable single-beam reception with a serving AP.
no code implementations • 9 Oct 2024 • Khojiakbar Botirov, Hazem Sallouha, Sofie Pollin, Marcos Katz
We propose a Balanced Space and Time-based Time Division Multiple Access scheduling (BST-TDMA) algorithm, which addresses environmental sensing challenges by balancing spatial and temporal factors to improve the environmental sensing efficiency of batteryless LIoT nodes.
no code implementations • 29 Aug 2024 • Prerna Dhull, Andrea P. Guevara, Maral Ansari, Sofie Pollin, Negin Shariati, Dominique Schreurs
The number of sensors deployed in the world is expected to explode in the near future.
no code implementations • 31 Jul 2024 • Vida Ranjbar, Robbert Beerten, Marc Moonen, Sofie Pollin
We investigate the impact of the limited memory capacity in the APs on the optimal number of APs.
no code implementations • 27 May 2024 • Jimmy Fernandez Landivar, Khojiakbar Botirov, Hazem Sallouha, Marcos Katz, Sofie Pollin
The sustainable design of Internet of Things (IoT) networks encompasses considerations related to energy efficiency and autonomy as well as considerations related to reliable communications, ensuring no energy is wasted on undelivered data.
no code implementations • 15 May 2024 • Jialun Kou, Marc Bauduin, André Bourdoux, Sofie Pollin
The paper introduces a detailed signal model for PMCW radar networks, analyzing both correlated and uncorrelated phase noise effects in the Doppler dimension.
no code implementations • 6 May 2024 • Dieter Verbruggen, Hazem Sallouha, Sofie Pollin
Through this work, we present a practical solution for reducing computational demands in deep learning applications, particularly within the domain of wireless communication.
no code implementations • 2 May 2024 • Vida Ranjbar, Robbert Beerten, Marc Moonen, Sofie Pollin
We show that 1) de-correlating the received signal vector at each AP from the corresponding vectors of the previous APs (inter-AP de-correlation) and 2) de-correlating the dimensions of the received signal vector at each AP (intra-AP de-correlation) before quantization helps to use the quantization bits at each AP more efficiently than directly quantizing the received signal vector without any pre-processing and consequently, improves the bit error rate (BER) and normalized mean square error (NMSE) of users signal estimation.
no code implementations • 29 Apr 2024 • Robbert Beerten, Vida Ranjbar, Andrea P. Guevara, Hazem Sallouha, Sofie Pollin
However, these CF mMIMO networks are designed for peak traffic loads, and when this is not the case, they are significantly over-dimensioned and not at all energy efficient.
no code implementations • 13 Mar 2024 • Dieter Verbruggen, Hazem Sallouha, Sofie Pollin
However, the integration of intelligent mechanisms is crucial for optimizing the efficiency, scalability, and adaptability of these 6G cell-free networks.
no code implementations • 20 Feb 2024 • Zhuangzhuang Cui, Franco Minucci, Rizqi Hersyandika, Rodney Martinez Alonso, Andrea P. Guevara, Hazem Sallouha, Sofie Pollin
The results show that the EMF exposure risk is negligible when RIS works in the reflective-only (RO) mode.
no code implementations • 15 Feb 2024 • Cel Thys, Rodney Martinez Alonso, Antoine Lhomel, Maxandre Fellmann, Nathalie Deltimple, Francois Rivet, Sofie Pollin
A key baseband algorithm, digital predistortion using NN models for PA linearization, will be adapted to the parallel Walsh architecture.
no code implementations • 23 Dec 2023 • Zhuangzhuang Cui, Achiel Colpaert, Sofie Pollin
Non-Terrestrial Network (NTN) has been envisioned as a key component of the sixth-generation (6G) mobile communication system.
no code implementations • 9 Dec 2023 • Vida Ranjbar, Robbert Beerten, Marc Moonen, Sofie Pollin
However, we show that in case of limited memory capacity at each AP, the memory capacity to store the received signal vectors at the final AP of this fronthaul becomes a limiting factor.
no code implementations • 19 Nov 2023 • Miquel Sellés Valls, Sofie Pollin, Ying Wang, Rizqi Hersyandika, Andre Kokkeler, Yang Miao
The results show that the estimated breath rate and heart rate reach below 2 beats per minute (bpm) error compared to the reference captured by on-body sensor for the single-person monostatic sensing scenario with body-transceiver distance up to 2 m, and the two-person bistatic sensing scenario with BS-UE distance up to 4 m. The presented work does not optimize the OFDM waveform parameters for sensing; it demonstrates a promising JCAS proof-of-concept in contact-free vital sign monitoring using mmWave multi-beam communication systems.
no code implementations • 15 Nov 2023 • Meng-Qian Alexander Wu, Tzu-Hsien Sang, Luisa Schuhmacher, Ming-Jie Guo, Khodr Hammoud, Sofie Pollin
Our approach improves the sum rate by more than 60% under time-varying CSI assumption while maintaining the advantages of typical DRL-based solutions.
no code implementations • 10 Oct 2023 • Zhuangzhuang Cui, Peize Zhang, Sofie Pollin
Thus, as an inevitable prerequisite, a comprehensive investigation encompassing spectrum utilization and channel characteristics is the first step to exploiting potential applications and prospects of using FR3 in the 6G ecosystem.
no code implementations • 2 Aug 2023 • Luisa Schuhmacher, Sofie Pollin, Hazem Sallouha
Bluetooth Low Energy (BLE) is a de-facto technology for Internet of Things (IoT) applications, promising very low energy consumption.
no code implementations • 29 Mar 2023 • Mingqing Liu, Fei Gao, Zhuangzhuang Cui, Sofie Pollin, Qingwen Liu
Joint communication and sensing (JCAS) technology has been regarded as one of the innovations in the 6G network.
no code implementations • 6 Mar 2023 • Abdul Saboor, Evgenii Vinogradov, Zhuangzhuang Cui, Sofie Pollin
Using these simulators, we assess the accuracy of existing models for $\mathbf{P_{LoS}}$ estimation and examine $\mathbf{P_{LoS}}$ for different UAV heights, user-UAV distances, and azimuth/elevation angles.
no code implementations • 2 Mar 2023 • Dieter Verbruggen, Hazem Sallouha, Sofie Pollin
Accurate network synchronization is a key enabler for services such as coherent transmission, cooperative decoding, and localization in distributed and cell-free networks.
no code implementations • 28 Jan 2023 • Zhuangzhuang Cui, Abdul Saboor, Achiel Colpaert, Sofie Pollin
Then, the path loss under different propagation conditions is investigated to obtain an integrated path loss model.
no code implementations • 18 Jan 2023 • Robbert Beerten, Vida Ranjbar, Andrea P. Guevara, Sofie Pollin
Cell-free Massive MIMO has emerged as a promising solution for next-generation radio networks.
no code implementations • 10 Nov 2022 • Achiel Colpaert, Sibren De Bast, Andrea P. Guevara, Zhuangzhuang Cui, Sofie Pollin
We also show this data can be used for learning-based localization and enhanced communication research.
no code implementations • 30 Oct 2022 • Bram van Berlo, Yang Miao, Rizqi Hersyandika, Nirvana Meratnia, Tanir Ozcelebi, Andre Kokkeler, Sofie Pollin
Joint Communication and Sensing (JCAS) is envisioned for 6G cellular networks, where sensing the operation environment, especially in presence of humans, is as important as the high-speed wireless connectivity.
no code implementations • 29 Oct 2022 • Zhuangzhuang Cui, Sofie Pollin
When beamforming is applied at the transmitter, only part of reconfigurable intelligent surfaces (RISs) will be active, and it becomes indispensable to study the impact of RIS geometry.
no code implementations • 27 Sep 2022 • Evgenii Vinogradov, Sofie Pollin
As the number of Unmanned Aerial Vehicles (UAVs) in the airspace grows, ensuring that the aircraft do not collide becomes vital for further technology development.
no code implementations • 25 Sep 2022 • Chenglong Li, Emmeric Tanghe, Sofie Pollin, Wout Joseph
Then, we present a micro-benchmark of channel response-based direct positioning and tracking for both device-based and contact-free schemes.
no code implementations • 23 Aug 2022 • Chenglong Li, Sibren De Bast, Yang Miao, Emmeric Tanghe, Sofie Pollin, Wout Joseph
To evade the complex association problem of distributed massive MIMO-based MTT, we propose to use a complex Bayesian compressive sensing (CBCS) algorithm to estimate the targets' locations based on the extracted target-of-interest CSI signal directly.
no code implementations • 14 Aug 2022 • Rizqi Hersyandika, Yang Miao, Sofie Pollin
We derive a channel model for the pre-shadowing event, design a moving blockage detection algorithm for the guard beam, and evaluate the performance of the guard beam theoretically and experimentally based on the measurement campaign using our mmWave testbed.
no code implementations • 14 Oct 2021 • Evgenii Vinogradov, Sofie Pollin
Despite being a hot research topic for a decade, drones are still not part of our everyday life.
no code implementations • 16 Jul 2021 • Simon Bos, Evgenii Vinogradov, Sofie Pollin
Recently, deep learning is considered to optimize the end-to-end performance of digital communication systems.
no code implementations • 27 Mar 2021 • Chenglong Li, Sibren De Bast, Emmeric Tanghe, Sofie Pollin, Wout Joseph
On top of the available MPCs, we propose a generalized fingerprinting system based on different single-metric and hybrid-metric schemes.
no code implementations • 10 Dec 2020 • Quan Chen, Hai Zhu, Lei Yang, Xiaoqian Chen, Sofie Pollin, Evgenii Vinogradov
By proposing a framework of Edge Computing Assisted Autonomous Flight (ECAAF), we illustrate that vision and communications can interact with and assist each other with the aid of edge computing and offloading, and further speed up the UAV mission completion.
Edge-computing Trajectory Planning Networking and Internet Architecture Robotics Systems and Control Systems and Control
no code implementations • 3 Dec 2020 • Gilles Callebaut, Sara Gunnarsson, Andrea P. Guevara, Fredrik Tufvesson, Sofie Pollin, Liesbet Van der Perre, Anders J Johansson
The assessment demonstrates the effect of channel hardening as well as the potential benefits of the experienced array gain.
no code implementations • 27 Nov 2020 • Sanjoy Basak, Sreeraj Rajendran, Sofie Pollin, Bart Scheers
With the help of a newly proposed residual Convolutional Neural Network (CNN) model, we show that the drone RF frequency signatures can be used for effective classification.
no code implementations • 7 Oct 2020 • Achiel Colpaert, Evgenii Vinogradov, Sofie Pollin
In future drone applications fast moving unmanned aerial vehicles (UAVs) will need to be connected via a high throughput ultra reliable wireless link.
no code implementations • 18 Aug 2020 • M. Mahdi Azari, Giovanni Geraci, Adrian Garcia-Rodriguez, Sofie Pollin
In this article, we consider a cellular network deployment where UAV-to-UAV (U2U) transmit-receive pairs coexist with the uplink (UL) of cellular ground users (GUEs).
no code implementations • 19 Jun 2020 • Steve Blandino, Thibault Bertrand, Claude Desset, Andre Bourdoux, Sofie Pollin
Millimeter-wave is one of the technologies powering the new generation of wireless communication systems.
1 code implementation • 17 Dec 2018 • Gert Dekkers, Fernando Rosas, Steven Lauwereins, Sreeraj Rajendran, Sofie Pollin, Bart Vanrumste, Toon van Waterschoot, Marian Verhelst, Peter Karsmakers
This model provides a first step of exploration prior to custom design of a smart wireless acoustic sensor, and also can be used to compare the energy consumption of different protocols.
1 code implementation • 22 Jul 2018 • Sreeraj Rajendran, Wannes Meert, Vincent Lenders, Sofie Pollin
Detecting anomalous behavior in wireless spectrum is a demanding task due to the sheer complexity of the electromagnetic spectrum use.
1 code implementation • 27 Jul 2017 • Sreeraj Rajendran, Wannes Meert, Domenico Giustiniano, Vincent Lenders, Sofie Pollin
We show that a LSTM based model can learn good representations of variable length time domain sequences, which is useful in classifying modulation signals with different symbol rates.
Networking and Internet Architecture