Search Results for author: Alexis Decurninge

Found 6 papers, 0 papers with code

On the Accuracy of Hotelling-Type Asymmetric Tensor Deflation: A Random Tensor Analysis

no code implementations28 Oct 2023 Mohamed El Amine Seddik, Maxime Guillaud, Alexis Decurninge, José Henrique de Morais Goulart

This work introduces an asymptotic study of Hotelling-type tensor deflation in the presence of noise, in the regime of large tensor dimensions.

Unsourced Random Access With Tensor-Based and Coherent Modulations

no code implementations24 Apr 2023 Alberto Rech, Alexis Decurninge, Luis G. Ordóñez

Unsourced random access (URA) is a particular form of grant-free uncoordinated random access wherein the users' identities are not associated to specific waveforms at the physical layer.

Tensor Decomposition

On the Accuracy of Hotelling-Type Tensor Deflation: A Random Tensor Analysis

no code implementations16 Nov 2022 Mohamed El Amine Seddik, Maxime Guillaud, Alexis Decurninge

Leveraging on recent advances in random tensor theory, we consider in this paper a rank-$r$ asymmetric spiked tensor model of the form $\sum_{i=1}^r \beta_i A_i + W$ where $\beta_i\geq 0$ and the $A_i$'s are rank-one tensors such that $\langle A_i, A_j \rangle\in [0, 1]$ for $i\neq j$, based on which we provide an asymptotic study of Hotelling-type tensor deflation in the large dimensional regime.

Triplet-Based Wireless Channel Charting: Architecture and Experiments

no code implementations25 May 2020 Paul Ferrand, Alexis Decurninge, Luis G. Ordoñez, Maxime Guillaud

Channel charting is a data-driven baseband processing technique consisting in applying self-supervised machine learning techniques to channel state information (CSI), with the objective of reducing the dimension of the data and extracting the fundamental parameters governing its distribution.

Dimensionality Reduction

DNN-based Localization from Channel Estimates: Feature Design and Experimental Results

no code implementations20 Mar 2020 Paul Ferrand, Alexis Decurninge, Maxime Guillaud

We consider the use of deep neural networks (DNNs) in the context of channel state information (CSI)-based localization for Massive MIMO cellular systems.

Position

CSI-based Outdoor Localization for Massive MIMO: Experiments with a Learning Approach

no code implementations19 Jun 2018 Alexis Decurninge, Luis García Ordóñez, Paul Ferrand, He Gaoning, Li Bojie, Zhang Wei, Maxime Guillaud

We report on experimental results on the use of a learning-based approach to infer the location of a mobile user of a cellular network within a cell, for a 5G-type Massive multiple input, multiple output (MIMO) system.

Outdoor Localization

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