公开(公告)号：US20210157133A1

公开(公告)日：2021-05-27

申请号：US17044546

申请日：2019-04-03

Applicant: INSTITUT MINES-TELECOM

Inventor： Jean-Louis DE BOUGRENET ,  Cyril LAHUEC ,  Vincent NOURRIT ,  Fabrice SEGUIN ,  Francesco FERRANTI

IPC: G02B27/00 ,  G02C11/00 ,  G02C7/04 ,  G06F3/01

Abstract: An optical system for detecting and tracking the eye movements of an individual. The system includes a frame, intended to be worn on the face of the individual, that includes a plurality of illumination sources. The system includes at least one contact lens, intended to be worn by an eye of the individual facing the frame, in which are encapsulated: an autonomous integrated circuit, a plurality of photoreceptors and a wireless communication transmitter. Variation in a signal (e.g., voltage or current) delivered by the photoreceptors allows not only the closure of the eyelid but also eye movements to be detected.

公开(公告)号：US20200322196A1

公开(公告)日：2020-10-08

申请号：US16754741

申请日：2018-10-11

Applicant: INSTITUT MINES TELECOM - IMT ATLANTIQUE - BRETAGNE - PAYS DE LA LOIRE

Inventor： Jérémy NADAL ,  Charbel ABDEL NOUR ,  Amer BAGHDADI

IPC: H04L27/26 ,  H04L25/03 ,  H04L25/02

Abstract: An FBMC equalization and demodulation unit and corresponding method to process an FBMC signal includes FBMC symbols, each FBMC symbol comprising data mapped over M subcarriers, oversampled by a factor K, filtered by a prototype filter and transposed in the time-domain, comprising: a frequency domain transposition unit, configured to transpose a block of P*KM samples comprising at least one FBMC symbol into frequency domain samples, where P is an integer greater than one, an equalizer unit configured to multiply the frequency domain samples by one or more coefficients computed from a propagation channel estimate, at least one circular convolution unit, configured to perform P circular convolutions between subsets of the equalized samples and a frequency domain response of a frequency shifted version of the prototype filter, and adders, to sum corresponding outputs of each of the P circular convolutions.

公开(公告)号：US20200210774A1

公开(公告)日：2020-07-02

申请号：US16621643

申请日：2018-06-08

Applicant: INSTITUT MINES TELECOM ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Jérémie JAKUBOWICZ

IPC: G06K9/62 ,  G06K9/00 ,  G06N3/08 ,  G06N3/04

Abstract: The present invention relates to a method for learning class descriptors for the detection and the automatic location of objects in a video, each object belonging to a class of objects from among a set of classes, the method using: a learning base, composed from reference videos and containing annotated frames each comprising one or more labels identifying each object detected in the frames, descriptors associated with these labels and learned previously by a preprocessing neural network from the annotated frames of the learning base, an architecture of neural networks defined by parameters centralized on a plurality of parameter servers, and a plurality of computation entities working in parallel, a method in which, for each class of objects, one of the neural networks of the architecture is trained by using as input data the descriptors and the labels to define class descriptors, each computation entity using, for the computation of the class descriptors, a version of the parameters of the parameter server on which the entity depends, and returning to this parameter server the parameters updated at the end of its computation, and the parameter servers exchanging with one another the parameters of each computation entity for the training of the neural networks for each class descriptor.

公开(公告)号：US20180341025A1

公开(公告)日：2018-11-29

申请号：US15735675

申请日：2016-06-21

Applicant: INSTITUT MINES- TELECOM

Inventor： Alexandre VERVISCH-PICOIS ,  Nel Samama

IPC: G01S19/44 ,  H04B1/06

Abstract: A method for locating at least one receiver within a positioning system, the system including: at least two transmitters, each transmitter emitting a signal including a carrier modulated by a code, and a receiver that is movable and configured to detect the signals, method in which: during the movement of the receiver from an estimated predefined initial position, consecutive measurements are taken of the phase of the carrier of the signal emitted by each transmitter, for various subsequent positions of the receiver, the variations in the phase of the carrier of the signals between each subsequent position of the receiver for which the phase was measured and the estimated initial position of the receiver is calculated for each transmitter, and these phase variations are used to calculate the variation in distance between the receiver and the transmitters, in order to determine the real initial position of the receiver.

公开(公告)号：US10122461B2

公开(公告)日：2018-11-06

申请号：US15508775

申请日：2015-09-04

Applicant: INSTITUT MINES-TELECOM

Inventor： Elie Awwad ,  Ghaya Rekaya-Ben Othman ,  Yves Jaouen

IPC: H04B10/2581 ,  H04B10/079 ,  H04B7/0413 ,  H04J14/04

Abstract: The invention relates to a mode selection method for a system for MIMO transmission on an optical fiber of multimode type. It comprises a step of measuring the transfer matrix of the transmission channel made up of a set of modes of the optical fiber (110), a step of transforming (120) the transfer matrix into a block diagonal matrix, each block being associated with a mode subset, a step of determining (130) the gain and/or the transmission capacity for each of the mode subsets, and a selection (140) of the mode subset corresponding to the highest gain and/or capacity, the MIMO transmission system then using only the modes of the subset thus selected to transmit on the optical fiber.The invention relates also to a core selection method for a system for MIMO transmission on optical fiber of multicore type.

公开(公告)号：US20180176815A1

公开(公告)日：2018-06-21

申请号：US15835631

申请日：2017-12-08

Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNE ,  Université Libanaise ,  Université Saint-Esprit de Kaslik

Inventor： Marie-Rita HOJEIJ ,  Joumana FARAH ,  Charbel ABDEL NOUR ,  Catherine DOUILLARD

IPC: H04W28/02 ,  H04W72/12 ,  H04W28/18 ,  H04W28/26

CPC classification number: H04W28/0236 ,  H04B7/0626 ,  H04L25/0204 ,  H04W28/18 ,  H04W28/26 ,  H04W72/0453 ,  H04W72/121 ,  H04W72/1215 ,  H04W72/1226 ,  H04W72/1236

Abstract: A mechanism for attributing users to a plurality of sub bands in a time slot t in a multiple access communications system, said method comprising assigning a combination of users to a sub band on a Proportional Fairness basis, that is to say whichever combination of users maximizes a Proportional Fairness performance metric for that channel, where the performance metric is weighted by a weighting factor reflecting the difference for that user between a target throughput and a projected throughput.

公开(公告)号：US20180145852A1

公开(公告)日：2018-05-24

申请号：US15580141

申请日：2016-06-07

Applicant: INSTITUT MINES-TELECOM

Inventor： Asma MEJRI ,  Ghaya REKAYA-BEN OTHMAN

IPC: H04L25/03

Abstract: There is provided a decoder (310) for sequentially decoding a data signal received through a transmission channel in a communication system, the received data signal carrying transmitted symbols, the decoder comprising a symbol estimation unit (311) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal from information stored in a stack, the stack being filled by iteratively expanding child nodes of a selected node of a decoding tree comprising a plurality of nodes, each node of the decoding tree corresponding to a candidate component of a symbol of the received data signal and each node being associated with a predetermined metric, the stack being filled at each iteration with at least some of the expanded child nodes and being ordered by increasing values of the metrics associated with the nodes, the selected node for each iteration corresponding to the node having the lowest metric in the stack. The decoder further comprises a stack reordering activation monitoring unit (313) configured to monitor at least one stack reordering activation condition and, in response to a stack reordering activation condition being verified, to cause the symbol estimation unit to: reduce the metric associated with each node stored in the stack by a quantity, reorder the stack by increasing value of the reduced metric, and remove a set of nodes from the reordered stack so as to maintain a number N of nodes in the reordered stack, the maintained nodes corresponding to the N nodes having the lowest metrics in the reordered stack.

公开(公告)号：US20180053999A1

公开(公告)日：2018-02-22

申请号：US15674173

申请日：2017-08-10

Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNE

Inventor： Jean-Philippe Coupez

IPC: H01Q5/371 ,  H01Q9/04

CPC classification number: H01Q5/371 ,  H01Q1/36 ,  H01Q1/362 ,  H01Q5/342 ,  H01Q9/0407 ,  H01Q9/16 ,  H01Q9/30 ,  H01Q11/08

Abstract: The invention discloses an antenna arrangement and a method of designing the same, the antenna arrangement being tuned to radiate in a plurality of bands. The antenna arrangement comprises a first conductive element which has a compact linear 2D or 3D form factor. It also comprises leaves attached to the first conductive element, the position, dimension, form factor and orientation of which are defined based on their impact on frequency shifts of the fundamental and harmonic modes, so that the antenna arrangement radiates at a plurality of predefined frequencies. The design method uses maps of hot areas where the sensitivity to the parameters defined for the leaves is maximal. Advantageously, the design method is performed in a manner which uses an orthogonality of the impacts of the parameters of the leaves vis-à-vis the different radiating modes. The antenna arrangement is compact and well adapted to applications to the IoT and consumer communication devices.

公开(公告)号：US09819404B2

公开(公告)日：2017-11-14

申请号：US15389765

申请日：2016-12-23

Applicant: INSTITUT MINES-TELECOM

Inventor： Mohamed-Achraf Khsiba ,  Ghaya Rekaya Ben-Othman ,  Asma Mejri

IPC: H04B7/185 ,  H04B7/0413 ,  H04B7/06 ,  H04L27/26 ,  H04W84/04 ,  H04W84/12

CPC classification number: H04B7/0413 ,  H04B7/0697 ,  H04L1/0031 ,  H04L1/0643 ,  H04L25/03006 ,  H04L27/2649 ,  H04W84/042 ,  H04W84/12

Abstract: Embodiments of the invention provide a decoder for decoding a signal represented by a vector of information symbols received through a transmission channel in a communication system, said the transmission system being represented by a channel state matrix, said information symbols being selected from a given set of values carrying a set of information bits, wherein said decoder comprises: a division unit (202) configured to divide the channel state matrix into a number of sub-blocks of column vectors, in accordance with a division of said vector of information symbols into a number of sub-vectors; a permutation unit (203) configured to determine a set of permuted channel state matrices by permuting said sub-blocks of column vectors, the permutation unit (203) being further configured to select at least one permuted channel state matrix among said set of permuted channel state matrices according to a selection criterion; a sub-block decoding unit (207) configured to determine a transformed signal from said signal and said at least one permuted channel state matrix and determine at least one estimate of each sub-vector of information symbols from said transformed signal by applying at least one iteration of a decoding algorithm; The decoder being configured to determine at least one estimate of a vector of transmitted information symbols from said at least one estimate of each sub-vector of information symbols.

公开(公告)号：US20170302930A1

公开(公告)日：2017-10-19

申请号：US15515835

申请日：2015-09-30

Applicant: INSTITUT MINES TELECOM ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS

Inventor： Elie Gabriel Mora ,  Marco Cagnazzo ,  Frederic Dufaux

IPC: H04N19/119 ,  H04N19/513 ,  H04N19/139 ,  H04N19/192 ,  H04N19/147 ,  H04N19/96 ,  H04N19/436 ,  H04N19/40

CPC classification number: H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/19 ,  H04N19/192 ,  H04N19/40 ,  H04N19/436 ,  H04N19/513 ,  H04N19/96

Abstract: Method of transcoding video data with fusion of coding units, computer program, transcoding module and telecommunications equipment associated therewith. Method of transcoding video data between a first and a second format (F1, F2), the method comprising a step of decoding the binary stream (FB1) providing decoded video data, data representative of the coding structure of the frames in the first format (F1) and, for all or some of the first coding units, prediction data, and a step of re-encoding in the course of which the decoded video data are encoded in the second format (F2). During the re-encoding step, an intermediate coding structure is constructed, comprising intermediate coding units constructed so as to correspond to the fusion of one or more first coding units, prediction data are allocated to each of the intermediate coding units, and the decoded video data are re-encoded in the second format (F2) as a function of the intermediate coding structure.