Nicolas Gresset
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View article: Fusion of Time and Angle Measurements for Digital-Twin-Aided Probabilistic 3D Positioning
Fusion of Time and Angle Measurements for Digital-Twin-Aided Probabilistic 3D Positioning Open
Previous studies explained how the 2D positioning problem in indoor non line-of-sight environments can be addressed using ray tracing with noisy angle of arrival (AoA) measurements. In this work, we generalize these results on two aspects.…
View article: Optimal Sensing Policy With Interference-Model Uncertainty
Optimal Sensing Policy With Interference-Model Uncertainty Open
This paper considers a half-duplex scenario where an interferer behaves according to a parametric model but the values of the model parameters are unknown. We explore the necessary number of sensing steps to gather sufficient knowledge abo…
View article: Probabilistic Positioning Via Ray Tracing With Noisy Angle of Arrival Measurements
Probabilistic Positioning Via Ray Tracing With Noisy Angle of Arrival Measurements Open
We consider the positioning problem in non line-of-sight (NLoS) situations, where several base stations (BS) try to locate a user equipment (UE) based on uplink angle of arrival (AoA) measurements and a digital twin of the environment. Ray…
View article: Communication-Efficient Federated Learning via Regularized Sparse Random Networks
Communication-Efficient Federated Learning via Regularized Sparse Random Networks Open
This work presents a new method for enhancing communication efficiency in stochastic Federated Learning that trains over-parameterized random networks. In this setting, a binary mask is optimized instead of the model weights, which are kep…
View article: Probabilistic Ray-Tracing Aided Positioning at mmWave frequencies
Probabilistic Ray-Tracing Aided Positioning at mmWave frequencies Open
We consider the following positioning problem where several base stations (BS) try to locate a user equipment (UE): The UE sends a positioning signal to several BS. Each BS performs Angle of Arrival (AoA) measurements on the received signa…
View article: An application-oriented scheduler
An application-oriented scheduler Open
We consider a multi-agent system where agents compete for the access to the radio resource. By combining some application-level parameters, such as the resilience, with a knowledge of the radio environment, we propose a new way of modeling…
View article: A Simple Sign-Bit Probabilistic Shaping Scheme
A Simple Sign-Bit Probabilistic Shaping Scheme Open
We propose a new shaping scheme for the Gaussian channel whose complexity is approximately half the one of a binary distribution matcher (DM). The result is obtained as follows: We first show that most of the shaping gain can be obtained v…
View article: User-Centric Federated Learning
User-Centric Federated Learning Open
Data heterogeneity across participating devices poses one of the main challenges in federated learning as it has been shown to greatly hamper its convergence time and generalization capabilities. In this work, we address this limitation by…
View article: Asymptotically Achieving Centralized Rate on the Decentralized Network MISO Channel
Asymptotically Achieving Centralized Rate on the Decentralized Network MISO Channel Open
We analyze the high-SNR regime of the MxK Network MISO channel in which each transmitter has access to a different channel estimate, possibly with different precision. It has been recently shown that, for some regimes, this setting attains…
View article: Low-Complexity Probabilistic Shaping for Coded Modulation
Low-Complexity Probabilistic Shaping for Coded Modulation Open
We introduce a new method for probabilistic shaping of coded modulation. We show that, for a large range of information rates, most of the shaping gain can be obtained via the use of only two non-uniform binary sources. This result is achi…
View article: DoF Region of the Decentralized MIMO Broadcast Channel—How many informed antennas do we need?
DoF Region of the Decentralized MIMO Broadcast Channel—How many informed antennas do we need? Open
In this work, we study the impact of imperfect sharing of the Channel State Information (CSI) available at the transmitters on a Network MIMO setting in which a set of $M$ transmit antennas, possibly not co-located, jointly serve two multi…
View article: Asymptotically Achieving Centralized Rate on the Decentralized Network\n MISO Channel
Asymptotically Achieving Centralized Rate on the Decentralized Network\n MISO Channel Open
We analyze the high-SNR regime of the MxK Network MISO channel in which each\ntransmitter has access to a different channel estimate, possibly with different\nprecision. It has been recently shown that, for some regimes, this setting\natta…
View article: Asymptotically Achieving Centralized Rate on the Decentralized Network\n MISO Channel
Asymptotically Achieving Centralized Rate on the Decentralized Network\n MISO Channel Open
We analyze the high-SNR regime of the MxK Network MISO channel in which each\ntransmitter has access to a different channel estimate, possibly with different\nprecision. It has been recently shown that, for some regimes, this setting\natta…
View article: DoF Region of the Decentralized MIMO Broadcast Channel -- How many\n informed antennas do we need?
DoF Region of the Decentralized MIMO Broadcast Channel -- How many\n informed antennas do we need? Open
In this work, we study the impact of imperfect sharing of the Channel State\nInformation (CSI) available at the transmitters on a Network MIMO setting in\nwhich a set of $M$ transmit antennas, possibly not co-located, jointly serve\ntwo mu…
View article: DoF Region of the Decentralized MIMO Broadcast Channel$\unicode{x2014}$How many informed antennas do we need?
DoF Region of the Decentralized MIMO Broadcast Channel$\unicode{x2014}$How many informed antennas do we need? Open
We study the impact of imperfect sharing of the Channel State Information (CSI) available at the transmitters on the capacity of the Network MIMO setting. In particular, we consider the setting in which a set of $M$ transmit antennas joint…
View article: Achieving Vanishing Rate Loss in Decentralized Network MIMO
Achieving Vanishing Rate Loss in Decentralized Network MIMO Open
In this paper, we analyze a Network MIMO channel with 2 Transmitters (TXs) jointly serving 2 users, where each TX has a different multi-user Channel State Information (CSI), potentially with a different accuracy. Recently it was shown the …
View article: Distributed CSIT Does Not Reduce the Generalized DoF of the 2-User MISO Broadcast Channel
Distributed CSIT Does Not Reduce the Generalized DoF of the 2-User MISO Broadcast Channel Open
International audience
View article: An Information-Theoretic Analysis of the Gaussian Multicast Channel With Interactive User Cooperation
An Information-Theoretic Analysis of the Gaussian Multicast Channel With Interactive User Cooperation Open
International audience
View article: Multicast channel communication with interactive receiver cooperation over orthogonal links
Multicast channel communication with interactive receiver cooperation over orthogonal links Open
International audience
View article: An Information-Theoretic Analysis of the Gaussian Multicast Channel with Interactive User Cooperation
An Information-Theoretic Analysis of the Gaussian Multicast Channel with Interactive User Cooperation Open
We consider the transmission of a common message from a transmitter to three receivers over a broadcast channel, referred to as a multicast channel in this case. All the receivers are allowed to cooperate with each other over full-duplex b…
View article: Generalized Degrees-of-Freedom of the 2-User Case MISO Broadcast Channel with Distributed CSIT
Generalized Degrees-of-Freedom of the 2-User Case MISO Broadcast Channel with Distributed CSIT Open
This work analyses the Generalized Degrees-of-Freedom (GDoF) of the 2-User Multiple-Input Single-Output (MISO) Broadcast Channel (BC) in the so-called Distributed CSIT regime, with application to decentralized wireless networks. This regim…
View article: Robust Regularized ZF in Cooperative Broadcast Channel under Distributed CSIT
Robust Regularized ZF in Cooperative Broadcast Channel under Distributed CSIT Open
In this work, we consider the sum rate performance of joint processing coordinated multi-point transmission network (JP-CoMP, a.k.a Network MIMO) in a so-called distributed channel state information (D-CSI) setting. In the D-CSI setting, t…
View article: A two-round interactive receiver cooperation scheme for multicast channels
A two-round interactive receiver cooperation scheme for multicast channels Open
International audience
View article: Cooperative Channel Estimation for Coordinated Transmission with Limited Backhaul
Cooperative Channel Estimation for Coordinated Transmission with Limited Backhaul Open
Obtaining accurate global channel state information (CSI) at multiple transmitter devices is critical to the performance of many coordinated transmission schemes. Practical CSI local feedback often leads to noisy and partial CSI estimates …