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.

公开(公告)号：US20170294986A1

公开(公告)日：2017-10-12

申请号：US15475400

申请日：2017-03-31

Applicant: INSTITUT MINES-TELECOM

Inventor： Mohamed-Achraf KHSIBA ,  Ghaya REKAYA BEN-OTHMAN

IPC: H04L1/00 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L1/0054 ,  H04B7/0413 ,  H04L1/0048 ,  H04L5/006 ,  H04L25/0242 ,  H04L25/03242

Abstract: Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, said transmission channel being represented by a channel matrix, wherein the decoder comprises: an initial radius determination unit (307) configured to determine an initial radius; a symbol estimation unit (309) configured to iteratively determine a current radius to search a lattice point inside a current spherical region defined by said current radius, said current radius being initially set to said initial radius, said symbol estimation unit (309) being configured, for each lattice point found in said current spherical region, to store said lattice point in association with a metric, said symbol estimation unit (309) being further configured to update said current radius using a linear function, said linear function having a slope parameter strictly inferior to one, The decoder being configured to determine at least one estimate of said vector of information symbols from at least one of the lattice points found by the symbol estimation unit (309).

公开(公告)号：US20170195052A1

公开(公告)日：2017-07-06

申请号：US15322612

申请日：2015-06-26

Applicant: INSTITUT MINES-TELECOM

Inventor： Elie AWWAD ,  Ghaya REKAYA-BEN OTHMAN ,  Yves JAOUEN

IPC: H04B10/2581

CPC classification number: H04B10/2581 ,  H04B10/2507 ,  H04J14/04

Abstract: The invention relates to a system and a method for transmission over optical fiber (130) with mode or core scrambling. The system comprises a spatio-temporal encoder (110) and a plurality of modulators (1251, . . . , 125n) associated, respectively, with separate propagation modes or cores of said fiber, each modulator modulating a laser beam. Said fiber comprises a plurality of slices (1301, . . . , 130L), an amplifier (140l) being provided between any two consecutive slices of the optical fiber. A mode scrambler (150l) is associated with each amplifier in order to perform a permutation of said modes between at least two consecutive slices.

公开(公告)号：US20170187433A1

公开(公告)日：2017-06-29

申请号：US15389765

申请日：2016-12-23

Applicant: INSTITUT MINES-TELECOM

Inventor： Mohammed-Achraf KHSIBA ,  Ghaya REKAYA BEN-OTHMAN ,  Asma MEJRI

IPC: H04B7/04 ,  H04L27/26 ,  H04B7/06

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：US20170187432A1

公开(公告)日：2017-06-29

申请号：US15389612

申请日：2016-12-23

Applicant: INSTITUT MINES-TELECOM

Inventor： Asma MEJRI ,  Mohammed-Achraf KHSIBA ,  Ghaya REKAYA BEN-OTHMAN

IPC: H04B7/04 ,  H04L27/26 ,  H04B7/06

CPC classification number: H04B7/0413 ,  H04B7/0697 ,  H04L1/04 ,  H04L1/06 ,  H04L25/03 ,  H04L27/2649 ,  H04W84/042 ,  H04W84/12

Abstract: Embodiments of the invention provide a decoder for decoding a data signal received through a transmission channel in a communication system, said transmission channel being represented by an upper triangular matrix, said signal carrying transmitted symbols, each symbol carrying a set of information bits, wherein said decoder comprises: a processing unit (213) configured to determine at least one sub-block decoding parameter given a target quality of service metric; A sub-block decoding unit (214) configured to divide said data signal into a number of sub-vectors based on said at least one sub-block decoding parameter in accordance with a division of said upper triangular matrix into a number of sub-matrices, said sub-block decoding unit (214) being further configured to determine at least one estimate of each sub-vector of transmitted symbols from said sub-vectors, and determine an estimate of the transmitted symbols from said estimates.

公开(公告)号：US20170149932A1

公开(公告)日：2017-05-25

申请号：US15316632

申请日：2015-06-08

Applicant: Institut Mines-Telecom

Inventor： Dario Rossi ,  Giuseppe Rossini

IPC: H04L29/08 ,  H04L12/813

Abstract: The present invention relates to a method for managing packets in a network of Information Centric Networking (ICN) nodes (1, 2a, 2b, 2c, 2d, 2e), the method comprising:—at a first node (1), performing steps of: ∘ Receiving a request (i) for a data packet (C), and if the data packet (C) is stored, responding to the request (i) by forwarding the data packet (C); otherwise ∘ sending to at least one neighboring node (2a, 2b) of the network a request (i′) for meta-data packets (@), a meta-data packet (@) indicating availability of said data packet (C) at a target node; ∘ receiving in response at least one meta-data packet (@), so as to identify at least one target node (2c, 2e) wherein said data packet (C) is available; ∘ forwarding the request (i) for said data packet (C) toward one selected target node (2c);—at a second node (2a, 2b, 2c, 2d, 2e), performing steps of: ∘ Receiving a request (i′) for meta-data packets (@), and if the data packet (C) is stored, responding to the request (i′) by forwarding a meta-data packet (@) indicating availability of said data packet (C) at the second node (2c, 2e); otherwise ∘ forwarding to at least one neighboring node (2c, 2d, 2e) of the network the request (i′) for meta-data packets (@).

公开(公告)号：US20170149533A1

公开(公告)日：2017-05-25

申请号：US15355311

申请日：2016-11-18

Applicant: INSTITUT MINES-TELECOM

Inventor： Asma MEJRI ,  Mohammed-Achraf KHSIBA ,  Ghaya REKAYA BEN-OTHMAN

IPC: H04L1/00 ,  H04L25/03

CPC classification number: H04L1/0052 ,  H04L25/03184 ,  H04L25/03191 ,  H04L25/03203 ,  H04L25/03305 ,  H04L25/03891

Abstract: There is provided a decoder for sequentially decoding a data signal received through a transmission channel in a communication system, said data signal carrying transmitted symbols, said decoder comprising a symbol estimation unit (301) configured to determine estimated symbols representative of the transmitted symbols carried by the received signal from information stored in a stack, said symbol estimation unit (301) being configured to iteratively fill the stack by 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 said data signal and each node being assigned a metric, the stack being filled at each iteration with a set of expanded child nodes and being ordered by increasing values of the metrics assigned to the nodes, the selected node for each iteration corresponding to the node being assigned the lowest metric in the stack, the decoder comprising a metric determination unit (302) configured to determine an initial metric for each child node of said set of expanded child nodes, wherein the decoder further comprises a modified metric calculation unit (303) configured to calculate a modified metric for at least one of the expanded child nodes from the metric associated with said expanded child node and a weighting coefficient, said weighting coefficient being a function of the level of said node in the decoding tree, the decoder assigning said modified metric to said at least one of the expanded child nodes.