no code implementations • 18 Mar 2024 • Michiel Sandra, Christian Nelson, Xuhong LI, Xuesong Cai, Fredrik Tufvesson, Anders J Johansson
The results demonstrate the great potential of the presented sounding system for providing high-quality radio channel measurements, contributing to high-resolution channel estimation, characterization, and active and passive sensing in realistic and dynamic scenarios.
no code implementations • 26 Sep 2022 • Michiel Sandra, Christian Nelson, Anders J Johansson
Compared to other USRP-based channel sounders, our design is versatile, eases the requirements on the data link between the USRPs and the host, limits the measurement data size, and increases the signal-to-interference-plus-noise ratio due to averaging.
no code implementations • 26 May 2021 • Gilles Callebaut, Sara Gunnarsson, Andrea P. Guevara, Anders J Johansson, Liesbet Van der Perre, Fredrik Tufvesson
Networks can be extended with more gateways, increasing the number of supported devices.
no code implementations • 10 Dec 2020 • Michiel Sandra, Sara Gunnarsson, Anders J Johansson
Therefore, we investigated the validity of the published channel models at sea by means of path loss measurements using a LoRa link with a transmitter antenna height of 0. 35 m and a base station antenna height of 2. 65 m and 5. 2 m. Our results show that the round earth loss model is not accurate at these antenna heights.
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.