公开(公告)号：US20230057413A1

公开(公告)日：2023-02-23

申请号：US17797902

申请日：2021-02-02

Applicant: FONDATION B-COM

Inventor： Luc LE MAGOAROU ,  Stéphane PAQUELET

IPC: H04L27/26 ,  H04L25/02

Abstract: A method of determining a pilot sequence comprising a plurality of pilot vectors to be transmitted in a communication channel modeled by a model vector including a complex-valued function variable as a function of real parameters and descriptive of a transmission from a transmission to a reception antenna through the communication channel, includes: determining an orthogonal basis of a real vector space that is the image of a matrix having respectively as columns the partial derivatives of the model vector with respect to the different real parameters; constructing the pilot vectors using the determined orthogonal basis, by grouping the orthogonal vectors of the orthogonal base in pairs and by producing, for each pair including first and second vectors, a pilot vector by summing the first vector and the product of the second vector by an imaginary number. A pilot sequence determining device and program are also disclosed.

公开(公告)号：US20230188385A1

公开(公告)日：2023-06-15

申请号：US17921481

申请日：2021-04-14

Applicant: FONDATION B-COM

Inventor： Luc LE MAGOAROU ,  Stéphane PAQUELET

IPC: H04L25/02 ,  G06N3/08

CPC classification number: H04L25/0254 ,  G06N3/08

Abstract: Disclosed is a device for estimating a channel for communication system, which includes: a construction module designed to construct, on the basis of a physical model, a set of vectors) associated with a plurality of values of at least one parameter; an initialization module designed to initialize, as a function of the constructed vectors), columns of weighting coefficients defining at least a part of an artificial neural network; an application module designed to apply, as an input to the part of the artificial neural network, a vector determined as a function of noisy values so as to produce as an output a vector including estimated values; and a module for updating the weighting coefficients of the part of the artificial neural network by a learning technique. An associated method and computer program are also described.

公开(公告)号：US20250047337A1

公开(公告)日：2025-02-06

申请号：US18720479

申请日：2022-12-06

Applicant: FONDATION B-COM

Inventor： Luc LE MAGOAROU ,  Stéphane PAQUELET

IPC: H04B7/0456

Abstract: The present invention relates to a method for determining pre-coding weights (w) based on a position vector (I) representing the position of a communication terminal within a communication system, said method being implemented by way of an artificial neural network (NN), the method comprising a step of determining the pre-coding weights (w) by way of the artificial neural network (NN) receiving the position vector (I) at input and supplying the pre-coding weights (w) at output. A transmission method, a device for determining pre-coding weights, a transmission device and a computer program are also described.

公开(公告)号：US20230344531A1

公开(公告)日：2023-10-26

申请号：US18026984

申请日：2021-09-21

Applicant: FONDATION B-COM

Inventor： Matthieu ROY ,  Stéphane PAQUELET

IPC: H04B1/20 ,  H04B17/309 ,  H04L25/02

CPC classification number: H04B17/309 ,  H04B1/20 ,  H04L25/0212

Abstract: A method for detecting (DET) a signal in a communication system including a plurality of communication channels, from a plurality of noisy values respectively representative of the transmission through the communication channels, is provided. The propagation in the communication channels is characterized by at least one variable. The set of values that can be taken by the variable is divided into a plurality of ranges. The method includes receiving (E4) the signals respectively transmitted in the plurality of communication channels, and detecting (E20) a signal corresponding to a value of the variable lying within one of the plurality of ranges by comparing, with a predetermined threshold, a value taken by a correlator linked to the range in question and calculated as a function of the noisy values. A channel estimation method, a detection device, a channel estimation device and a computer program are also described.