Indoor localization with robust global channel charting: A time-distance-based approach

M Stahlke, G Yammine, T Feigl… - … Machine Learning in …, 2023 - ieeexplore.ieee.org
Fingerprinting (FP) significantly improves the indoor localization performance in non-line-of-
sight-dominated areas. However, its deployment and maintenance is cost-intensive as it …

Velocity-based channel charting with spatial distribution map matching

M Stahlke, G Yammine, T Feigl… - IEEE Journal of …, 2024 - ieeexplore.ieee.org
Radio fingerprinting (FP) technologies improve localization performance in challenging non-
line-of-sight environments. However, FP is expensive as its life cycle management requires …

Channel charting in real-world coordinates

S Taner, V Palhares, C Studer - GLOBECOM 2023-2023 IEEE …, 2023 - ieeexplore.ieee.org
Channel charting is an emerging self-supervised method that maps channel state
information (CSI) to a low-dimensional latent space, which represents pseudo-positions of …

Optimizing multicarrier multiantenna systems for los channel charting

T Yassine, L Le Magoarou, M Crussière… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Channel charting (CC) consists in learning a map** between the space of raw channel
observations, made available from pilot-based channel estimation in multicarrier …

Channel charting based beamforming

L Le Magoarou, T Yassine, S Paquelet… - 2022 56th Asilomar …, 2022 - ieeexplore.ieee.org
Channel charting (CC) is an unsupervised learning method allowing to locate users relative
to each other without reference. From a broader perspective, it can be viewed as a way to …

Leveraging triplet loss and nonlinear dimensionality reduction for on-the-fly channel charting

T Yassine, L Le Magoarou, S Paquelet… - 2022 IEEE 23rd …, 2022 - ieeexplore.ieee.org
Channel charting is an unsupervised learning method that aims at map** wireless
channels to a so-called chart, preserving as much as possible spatial neighborhoods. In this …

Channel charting for streaming CSI data

S Taner, M Guillaud, O Tirkkonen… - 2023 57th Asilomar …, 2023 - ieeexplore.ieee.org
Channel charting (CC) applies dimensionality reduction to channel state information (CSI)
data at the infrastructure basestation side with the goal of extracting pseudo-position …

Improving triplet-based channel charting on distributed massive MIMO measurements

F Euchner, P Stephan, M Gauger… - 2022 IEEE 23rd …, 2022 - ieeexplore.ieee.org
The objective of channel charting is to learn a virtual map of the radio environment from high-
dimensional channel state information (CSI) that is acquired by a multi-antenna wireless …

A CSI-based Data-driven Localization Framework using Small-scale Training Datasets in Single-site MIMO Systems

K Vuckovic, S Hosseini, F Hejazi… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
This paper presents a new method for user localization in single-site massive Multiple-Input-
Multiple-Output (MIMO) systems, which circumvents the need for large labeled datasets …

Model-Based Approaches to Channel Charting

A Aly, E Ayanoglu - IEEE Transactions on Communications, 2023 - ieeexplore.ieee.org
We present new ways of producing a channel chart employing model-based approaches.
We estimate the angle of arrival and the distance between the base station and the user …