no code implementations • 4 Dec 2023 • Taha Yassine, Baptiste Chatelier, Vincent Corlay, Matthieu Crussière, Stephane Paquelet, Olav Tirkkonen, Luc Le Magoarou
In non-standalone or cell-free systems, chart locations computed at a given base station can be transmitted to several other base stations (possibly operating at different frequency bands) for them to predict which beams to use.
no code implementations • 28 Sep 2023 • Taha Yassine, Luc Le Magoarou, Matthieu Crussière, Stephane Paquelet
Channel charting (CC) consists in learning a mapping between the space of raw channel observations, made available from pilot-based channel estimation in multicarrier multiantenna system, and a low-dimensional space where close points correspond to channels of user equipments (UEs) close spatially.
no code implementations • 28 Aug 2023 • Baptiste Chatelier, Luc Le Magoarou, Vincent Corlay, Matthieu Crussière
In order to overcome this limitation, this paper presents a frugal, model-based network that separates the low frequency from the high frequency components of the target mapping function.
no code implementations • 6 Dec 2022 • Luc Le Magoarou, Taha Yassine, Stephane Paquelet, Matthieu Crussière
Channel charting (CC) is an unsupervised learning method allowing to locate users relative to each other without reference.
no code implementations • 4 Apr 2022 • Taha Yassine, Luc Le Magoarou, Stéphane Paquelet, Matthieu Crussière
Channel charting is an unsupervised learning method that aims at mapping wireless channels to a so-called chart, preserving as much as possible spatial neighborhoods.
no code implementations • 29 Dec 2021 • Luc Le Magoarou, Taha Yassine, Stéphane Paquelet, Matthieu Crussière
Massive MIMO systems are highly efficient but critically rely on accurate channel state information (CSI) at the base station in order to determine appropriate precoders.