知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

224 records (took 0.027 seconds)

    CONFIGURABLE MULTIBAND ANTENNA ARRANGEMENT WITH WIDEBAND CAPACITY AND DESIGN METHOD THEREOF
    211.
    发明申请
    CONFIGURABLE MULTIBAND ANTENNA ARRANGEMENT WITH WIDEBAND CAPACITY AND DESIGN METHOD THEREOF 审中-公开

    公开(公告)号：US20180183144A1

    公开(公告)日：2018-06-28

    申请号：US15849205

    申请日：2017-12-20

    Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNE

    Inventor： Jean-Philippe COUPEZ

    IPC: H01Q1/44 ,  H01Q5/25 ,  H01Q5/28 ,  H01Q5/48 ,  H01Q5/371

    Abstract: The invention discloses an antenna arrangement of a bonsai type, where not only the resonating frequencies may be adjusted, but also the bandwidth around some or all resonating frequencies. This is achieved by adding new branches to the trunk of the bonsai antenna arrangement. The positions and lengths of the branches are defined as a function of the frequencies around which the bandwidth should be adjusted. The antenna arrangement may be inscribed in a 3D compact volume of a specific form factor. It may also be inscribed in a planar structure. The antenna arrangement may be produced at a low cost. It may be used in a variety of applications, including communications in WiFi or other standards of multimedia content that need defined bandwidths for instance to comply to a predetermined quality of service.

    DIGITAL ENCODER AND METHOD OF ENCODING
    213.
    发明申请
    DIGITAL ENCODER AND METHOD OF ENCODING 审中-公开

    公开(公告)号：US20180048510A1

    公开(公告)日：2018-02-15

    申请号：US15673902

    申请日：2017-08-10

    Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNE

    Inventor： Jérémy NADAL ,  Charbel ABDEL NOUR ,  Amer BAGHDADI

    IPC: H04L27/26

    Abstract: An encoder architecture for UF-OFDM is provided, in which samples are first processed sub-band wise, and then resorted for sub-carrier-wise processing. The sub-carrier processing may comprise separate processing for the two extremity parts of the base band signal corresponding to the transient state of the UF-OFDM data stream and for a core part of the base band signal corresponding to the non-transient state of the UF-OFDM data stream, and then concatenated to obtain a UF-OFDM data stream. In certain embodiments a first extremity part of the base band signal corresponding to the transient state of the UF-OFDM data stream is calculated directly, and the other extremity part inferred from the core part and the first extremity part. The core and extremity part processors may be implemented with filters adapted to multiply each sample by a respective filter coefficient. Modifying these coefficients can introduce a frequency shift or convert the encoder for OFDM encoding.

    METHOD AND APPARATUS FOR POWER AND USER DISTRIBUTION TO SUB-BANDS IN NOMA SYSTEMS
    214.
    发明申请
    METHOD AND APPARATUS FOR POWER AND USER DISTRIBUTION TO SUB-BANDS IN NOMA SYSTEMS 审中-公开

    公开(公告)号：US20180027507A1

    公开(公告)日：2018-01-25

    申请号：US15652644

    申请日：2017-07-18

    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: H04W52/34 ,  H04W72/04

    CPC classification number: H04W52/346 ,  H04W52/225 ,  H04W52/242 ,  H04W52/267 ,  H04W52/367 ,  H04W72/0446 ,  H04W72/0473

    Abstract: Power allocation in NOMA systems for example on the basis Proportional Fairness calculations depends on knowledge of user throughput on a specified sub-band, which implies that users have already been allocated to particular sub-bands. Meanwhile, maximum throughput can generally be achieved where there is the greatest possible difference in transmission power for the users on a given sub-band, so that optimal allocation of users to sub-bands requires knowledge of the power available for each user. A mechanism is proposed based on iteratively applying a waterfilling algorithm to distribute power across a progressive subset of sub-bands to provisionally distribute the power budget across that subset of sub-bands, where at each iteration the water filling algorithm is carried out for each possible combination of users assignable to the newly considered sub-band using a floor for that sub band proportional to the reciprocal of the square of the highest channel gain value of any user in that combination, and calculating a throughput for that combination with the corresponding power attribution, whereby the combination retained for the next iteration (with an additional sub-band) is whichever gives the highest throughput. This process is thus repeated until users are assigned to all sub-bands, whereupon power allocations from the last iteration are definitive.

    SPACE-TIME CODING METHODS AND DEVICES FOR OPTICAL MIMO SYSTEMS
    217.
    发明申请
    SPACE-TIME CODING METHODS AND DEVICES FOR OPTICAL MIMO SYSTEMS 审中-公开

    公开(公告)号：US20170331553A1

    公开(公告)日：2017-11-16

    申请号：US15593402

    申请日：2017-05-12

    Applicant: INSTITUT MINES-TELECOM

    Inventor： El-Medhi AMHOUD ,  Ghaya REKAYA BEN-OTHMAN ,  Yves JAOUEN

    IPC: H04B10/2581 ,  H04L5/00 ,  H04B7/0456

    CPC classification number: H04B10/2581 ,  H04B7/0456 ,  H04B10/516 ,  H04L1/0618 ,  H04L5/0003 ,  H04L5/0023

    Abstract: Embodiments of the invention provide a Space-Time coding device for encoding a digital data sequence according to a predefined space-time coding rate, said data sequence comprising a set of modulated symbols to be transmitted over at least two propagation modes, during a number of time slots, through an optical transmission channel in a single-core multimode optical fiber transmission system, wherein the device comprises: a codebook generator (53) configured to determine a set of codeword matrices defining a space-time code represented by a space dimension and a temporal dimension, each codeword matrix comprising complex values and a number of columns equal to said code temporal dimension, and a number of rows equal to said code space dimension, the codebook generator (53) being further configured to associate a difference codeword matrix and a distance metric to each pair of codeword matrices among said set of codeword matrices, each component of a difference codeword matrix associated with a given pair of codeword matrices being equal to the difference between the corresponding components of the codeword matrices of said pair, the distance metric associated with a given pair of codeword matrices being determined by computing the Euclidean norm of the difference codeword matrix associated with said pair, wherein the codebook generator (53) is configured to select the components of the codeword matrices depending on the number of pairs of codeword matrices that are associated with a unitary difference codeword matrix and with a distance metric equal to a given Euclidean distance; and an encoding unit (55) configured to encode said set of modulated symbols into a codeword matrix selected from said set of codeword matrices.

    METHOD FOR PROCESSING AN INTRUSION INTO A WIRELESS COMMUNICATION NETWORK, RELATED DEVICE AND COMPUTER PROGRAM
    219.
    发明申请
    METHOD FOR PROCESSING AN INTRUSION INTO A WIRELESS COMMUNICATION NETWORK, RELATED DEVICE AND COMPUTER PROGRAM 有权

    公开(公告)号：US20170302688A1

    公开(公告)日：2017-10-19

    申请号：US15516577

    申请日：2015-09-30

    Applicant: B<>COM ,  Universite de Bretagne Occidentale ,  Institut Mines Telecom

    Inventor： David Espes ,  Nora Cuppens

    IPC: H04L29/06 ,  H04W88/10 ,  H04L12/26 ,  H04L9/06

    Abstract: A method for processing an intrusion in a communication network including a plurality of node equipment, including a current node, which: discovers of a neighbourhood of the current node, including assigning a resilience group to the neighbouring node, according to at least one piece of information representative of a resilience level of the neighbouring node to at least one type of attack; detecting an intrusion affecting at least one suspect node of the neighbourhood of the current node; establishing a consensus concerning the at least one suspect node in a neighbourhood by counting a number of resilience groups having detected the intrusion in the neighbourhood of the suspect node and a total number of resilience groups represented in the neighbourhood of the suspect node; and deciding to change a status of the suspect node based on a result of the consensus by comparison of both numbers.

    METHODS AND DEVICES FOR DECODING DATA SIGNALS
    220.
    发明申请
    METHODS AND DEVICES FOR DECODING DATA SIGNALS 审中-公开

    公开(公告)号：US20170295037A1

    公开(公告)日：2017-10-12

    申请号：US15476009

    申请日：2017-03-31

    Applicant: INSTITUT MINES-TELECOM

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

    IPC: H04L25/02 ,  H04L27/06 ,  H04L25/03

    CPC classification number: H04L25/0242 ,  H04B7/0413 ,  H04L1/0631 ,  H04L25/03292 ,  H04L25/03891 ,  H04L27/06 ,  H04L2025/03426

    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 comprising column vectors, said information symbols carrying information bits, wherein the decoder comprises: a transformation unit (401) configured to determine a set of auxiliary channel matrices, each auxiliary channel matrix being determined by performing a linear combination of at least one of the column vectors of said channel matrix; a decomposition unit (407) configured to determine a decomposition of each auxiliary channel matrix into an upper triangular matrix and an orthogonal matrix; a matrix selection unit (409) configured to select at least one auxiliary channel matrix among said set of auxiliary channel matrices depending on a selection criterion related to the components of said upper triangular matrices. The decoder being configured to determine an auxiliary signal by multiplying the transpose of the orthogonal matrix corresponding to said selected auxiliary channel matrix by said received signal, the decoder being configured to determine at least one estimate of said vector of information symbols from said auxiliary signal and from the upper triangular matrix corresponding to said selected auxiliary channel matrix by applying a decoding algorithm.

Patent Agency Ranking