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    SYSTEM AND METHOD FOR UPLINK COORDINATED TRANSMISSION IN AN OPEN RADIO ACCESS NETWORK
    251.
    发明申请
    SYSTEM AND METHOD FOR UPLINK COORDINATED TRANSMISSION IN AN OPEN RADIO ACCESS NETWORK 审中-公开

    公开(公告)号：WO2022175098A1

    公开(公告)日：2022-08-25

    申请号：PCT/EP2022/052552

    申请日：2022-02-03

    Applicant: INSTITUT MINES TELECOM

    Inventor： REKAYA BEN-OTHMAN, Ghaya ,  ZHANG, Chao ,  ASKRI, Aymen

    IPC: H04W28/06 ,  H04B7/024 ,  H04W88/08

    Abstract: There is provided communication system (100) having to an open radio access network architecture, the communication system comprising a number (K) of user equipments (3) configured to exchange messages through the communication system, the communication system comprising one or more radio unit (5) and a distributed unit (6), each radio unit (5) being connected to the distributed unit through a fronthaul link (4) having a given capacity. The communication system comprises a coordination system (20) being configured to coordinate the exchanges between the radio units of the system and the distributed unit (6), in response to a signal received by the radio units (5) from a user equipment (3). The coordination system (2) is configured to send a signalling message to each radio unit (5) comprising data stream selection information, each radio unit comprising: - a transformation unit (50) configured to apply a transformation operation to the signal vector received by said radio unit (5), which provides a transformed vector, the transformation operation being defined to reduce the dimension of the received signal vector; - a data stream selection unit (52) configured to select a number of data streams corresponding to components of the transformed vector using the data stream selection information comprised in the signalling message, - a quantizer configured to apply a quantization operation to the selected data streams, which provides quantized vectors, the radio unit (5) being configured to send the quantized vectors to the distributed unit (6). The sum of the numbers of data streams selected at the radio units (5), over all the radio units of the communication system (100), is higher or equal to the product of the number of user equipments (K) and the number of antennas of a user equipment.

    POINÇONNAGE SÉLECTIF DE CODES NON BINAIRES
    255.
    发明申请
    POINÇONNAGE SÉLECTIF DE CODES NON BINAIRES 审中-公开

    公开(公告)号：WO2021198010A1

    公开(公告)日：2021-10-07

    申请号：PCT/EP2021/057716

    申请日：2021-03-25

    Applicant: INSTITUT MINES TELECOM

    Inventor： KLAIMI, Rami ,  ABDEL NOUR, Charbel ,  DOUILLARD, Catherine

    IPC: H03M13/25 ,  H03M13/29 ,  H03M13/258 ,  H03M13/2969 ,  H03M13/6362

    Abstract: Procédé de codage d'un message numérique d'entrée Procédé de codage d'un message numérique d'entrée, utilisant au moins un encodeur, notamment destiné à former un code correcteur d'erreurs, en particulier un turbocode, ledit encodeur formant, à partir du message d'entrée, une séquence principale de symboles codés non binaires, chaque symbole codé étant un symbole systématique ou un symbole de parité, le procédé comportant les étapes suivantes : - convertir chaque symbole codé en un groupe de bits, - pour au moins un symbole codé, en particulier pour un ou plusieurs symboles de parité, poinçonner sélectivement certains bits du groupe de bits correspondant de sorte à minimiser le nombre de symboles de parités de la séquence principale situés à une distance nulle d'un symbole de parité appartenant à au moins une séquence concurrente de symboles codés non binaires, et - regrouper les bits non poinçonnés des symboles codés pour former le message codé de sortie.

    DEVICES AND METHODS FOR MACHINE LEARNING ASSISTED SPHERE DECODING
    257.
    发明申请
    DEVICES AND METHODS FOR MACHINE LEARNING ASSISTED SPHERE DECODING 审中-公开

    公开(公告)号：WO2021001199A1

    公开(公告)日：2021-01-07

    申请号：PCT/EP2020/067396

    申请日：2020-06-23

    Applicant: INSTITUT MINES TELECOM

    Inventor： REKAYA, Ghaya ,  ASKRI, Aymen

    IPC: G06N20/00 ,  G06N3/04 ,  H03M13/39 ,  H04L25/03 ,  H04L1/00

    Abstract: A decoder for decoding a signal received through a transmission channel represented by a channel matrix using a search sphere radius. The decoder comprises a radius determination device (307) for determining a search sphere radius from a preliminary radius. The radius determination device (307) is configured to: i. apply a machine learning algorithm to input data derived from the received signal, the channel matrix and a current radius, the current radius being initially set to the preliminary radius, which provides a current predicted number of lattice points associated with the current radius; ii. compare the current predicted number of lattice points to a given threshold; iii. update the current radius if the current predicted number of lattice points is strictly higher than the given threshold, the current radius being updated by applying a linear function to the current radius; Steps i to iii are iterated until a termination condition is satisfied, the termination condition being related to the current predicted number, the radius determination device (307) being configured to set the search sphere radius to the current radius in response to the termination condition being satisfied.

    METHOD FOR GENERATING INFORMATION ABOUT THE PRODUCTION OF A HANDWRITTEN, HAND-AFFIXED OR PRINTED TRACE
    258.
    发明申请
    METHOD FOR GENERATING INFORMATION ABOUT THE PRODUCTION OF A HANDWRITTEN, HAND-AFFIXED OR PRINTED TRACE 审中-公开

    公开(公告)号：WO2020144494A1

    公开(公告)日：2020-07-16

    申请号：PCT/IB2019/050224

    申请日：2019-01-11

    Applicant: INSTITUT MINES TELECOM

    Inventor： HOUMANI, Nesma ,  GARCIA-SALICETTI, Sonia

    IPC: G06K9/00

    Abstract: The invention relates to a method for generating at least one information about the production of a handwritten, hand-affixed or printed trace on a surface, comprising: - extracting several features describing the trace from at least one three- dimensional image of said trace, acquired by an imagery system, and - inputting said extracted features in a trained module to output said at least one information, said module having been trained beforehand with a plurality of previously- acquired three-dimensional images of traces and corresponding information related to the production of these traces.

    PROCEDE POUR FOURNIR UNE CONNECTIVITE RADIOMOBILE DANS UN ESPACE CONFINE PAR UNE ANTENNE DE TELEVISION EXTERIEURE ET SYSTEME ASSOCIE
    259.
    发明申请
    PROCEDE POUR FOURNIR UNE CONNECTIVITE RADIOMOBILE DANS UN ESPACE CONFINE PAR UNE ANTENNE DE TELEVISION EXTERIEURE ET SYSTEME ASSOCIE 审中-公开

    公开(公告)号：WO2020127084A1

    公开(公告)日：2020-06-25

    申请号：PCT/EP2019/085402

    申请日：2019-12-16

    Applicant: INSTITUT MINES TELECOM

    Inventor： IELLAMO, Stefano

    IPC: H04B7/155 ,  H04B1/38

    Abstract: Sur le lien descendant, un signal radio-mobile (S12) émis par une station de base (1.1) et un signal de télévision (S82) sont reçus (E1) sur le lien descendant par une antenne de télévision extérieure (2) située sur le toit d'un bâtiment (3). Après réception, ces signaux sont transmis (E2) via un lien de communication filaire (5) à un module de traitement (6, 6', 6'') situé dans un espace confiné où se situe un terminal (4). Le signal radio-mobile (S12) est extrait (E3), amplifié (E4) et envoyé par le module de traitement (6, 6', 6") de manière à être reçu par le terminal (4). Sur le lien montant, le terminal (4) émet un signal radio-mobile (S'41) à destination d'une station de base (1.2). De manière alternative, le terminal (4) émet un signal radio-fréquence (S46) reçu par le module de traitement (6) qui qui l'amplifie (E29) et le transmet (E30) à une station de base (1.2), avec ou sans transposition de fréquence (E6), avec ou sans conversion de format (E8).

    DEVICES AND METHODS FOR ADAPTIVE DECODING AND CORE SCRAMBLING IN MULTI-CORE FIBER TRANSMISSION SYSTEMS
    260.
    发明申请
    DEVICES AND METHODS FOR ADAPTIVE DECODING AND CORE SCRAMBLING IN MULTI-CORE FIBER TRANSMISSION SYSTEMS 审中-公开

    公开(公告)号：WO2020057981A1

    公开(公告)日：2020-03-26

    申请号：PCT/EP2019/073610

    申请日：2019-09-04

    Applicant: INSTITUT MINES TELECOM

    Inventor： REKAYA, Ghaya ,  ABOUSEIF, Akram ,  JAOUEN, Yves

    IPC: H04B10/079 ,  H04J14/04 ,  H04L1/00 ,  H04L1/06 ,  H04L25/00

    Abstract: A decoder for determining an estimate of a vector of information symbols carried by optical signals propagating along a multi-core fiber in an optical fiber transmission channel according to two or more cores. The decoder is implemented in an optical receiver. The optical signals are encoded using a space-time coding scheme and/or scrambled by at least one scrambling device arranged in the optical fiber transmission channel according to a predefined scrambling function. The decoder comprises a processing unit configured to adaptively: - determine, in response to a temporal condition, one or more channel quality indicators from the optical signals; - determine a decoding algorithm according to a target quality of service metric and on the one or more channel quality indicators; - update the predefined scrambling function and/or the space-time coding scheme depending on the target quality of service metric and on the one or more channel quality indicators. The decoder further comprises a symbol estimation unit configured to determine an estimate of a vector of information symbols by applying the decoding algorithm to the optical signals.

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