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pro vyhledávání: '"Ferrand, Paul"'
Channel charting is a recently proposed framework that applies dimensionality reduction to channel state information (CSI) in wireless systems with the goal of associating a pseudo-position to each mobile user in a low-dimensional space: the channel
Externí odkaz:
http://arxiv.org/abs/2304.08095
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 fundame
Externí odkaz:
http://arxiv.org/abs/2005.12242
We consider the use of deep neural networks (DNNs) in the context of channel state information (CSI)-based localization for Massive MIMO cellular systems. We discuss the practical impairments that are likely to be present in practical CSI estimates,
Externí odkaz:
http://arxiv.org/abs/2004.00363
The majority of modern communication systems adopts quadrature amplitude modulation (QAM) constellations as transmission schemes. Due to their square structure, however, QAM do not provide satisfying protection to phase noise effects as the number of
Externí odkaz:
http://arxiv.org/abs/1812.02540
Autor:
Decurninge, Alexis, Ordóñez, Luis García, Ferrand, Paul, Gaoning, He, Bojie, Li, Wei, Zhang, Guillaud, Maxime
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. We describe how the sample spat
Externí odkaz:
http://arxiv.org/abs/1806.07447
Autor:
Ferrand, Paul
In this work, we study a family of wireless channel simulation models called geometry-based stochastic channel models (GBSCMs). Compared to more complex ray-tracing simulation models, GBSCMs do not require an extensive characterization of the propaga
Externí odkaz:
http://arxiv.org/abs/1709.09891
Autor:
Ferrand, Paul, Duarte, Melissa
We identify phase noise as a bottleneck for the performance of digital self-interference cancellers that utilize a single auxiliary receiver---single-tap digital cancellers---and operate in multipath propagation environments. Our analysis demonstrate
Externí odkaz:
http://arxiv.org/abs/1706.09764
As network deployments become denser, interference arises as a dominant performance degradation factor. To confront with this trend, Long Term Evolution (LTE) incorporated features aiming at enabling cooperation among different base stations, a techn
Externí odkaz:
http://arxiv.org/abs/1701.06486
Publikováno v:
IEEE 17th International Workshop onSignal Processing Advances in Wireless Communications (SPAWC), Jul 2016, Edinburgh, United Kingdom. pp.1 - 5, 2016
Interference Alignment (IA) is technique that, in a large sense, makes use of the increasing signal dimensions available in the system through MIMO and OFDM technologies in order to globally reduce the interference suffered by users in a network. In
Externí odkaz:
http://arxiv.org/abs/1611.08212
Autor:
Ferrand, Paul
The output of oscillators is usually not stable over time. In particular, phase variations---or \emph{phase noise}---corrupts the oscillations. In this letter, we describe a circuit that designed to average the phase noise processes and frequency off
Externí odkaz:
http://arxiv.org/abs/1609.05701