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公开(公告)号：US11070415B2
公开(公告)日：2021-07-20
申请号：US16754741
申请日：2018-10-11
Inventor： Jérémy Nadal , Charbel Abdel Nour , Amer Baghdadi
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.
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22.发明申请公开(公告)号：US20210083814A1
公开(公告)日：2021-03-18
申请号：US17042453
申请日：2019-03-20
Inventor： Marie-Rita HOJEIJ , Charbel ABDEL NOUR , Joumana FARAH , Catherine DOUILLARD
Abstract: A mechanism is presented for attributing users to one or more of a plurality of sub-bands in a multiple access communications system, wherein in an initial assignment phase, a first user is selected for a sub band, for example on the basis of a user priority. Users having complementary channel gains to that of the first user are identified, and then a second sub-band user maximizing a performance metric reflecting the achieved throughput, and/or fairness across users, is selected to accompany the first user on that sub-band. The initial assignment phase may terminate once all users have been assigned to a sub-band once. After the first phase is complete, the first user for each sub-band may be the user whose achieved total throughput is furthest from a target throughput defined for that user, wherein each user is assigned to the remaining sub-band to which no first user is currently attributed offering the highest channel gain for that user. Mechanisms for determining user priority, making provisional and definitive power allocations, and performance metrics are proposed.
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公开(公告)号：US20210050918A1
公开(公告)日：2021-02-18
申请号：US17049308
申请日：2019-04-10
Applicant: INSTITUT MINES-TELECOM
Inventor： Ghaya REKAYA , Akram ABOUSEIF , Yves JAOUEN
IPC: H04B10/2525 , H04B10/50 , H04B10/2581
Abstract: The various embodiments provide an optical transmission system comprising an optical transmitter configured to transmit data over an optical fiber transmission channel comprising a multi-core fiber, the data being carried by optical signals, the optical signals propagating along the multi-core fiber according to two or more cores, the multi-core fiber being associated with fiber parameters and misalignment losses values, at least one scrambling device being arranged in the optical fiber transmission channel for scrambling the two or more cores according to a scrambling function, wherein the optical fiber transmission channel comprises a system configuration device configured to determine a core dependent loss value depending on the fiber parameters, at least one misalignment loss, a number of the at least one scrambling device, and the scrambling function.
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24.发明申请公开(公告)号：US20210022088A1
公开(公告)日：2021-01-21
申请号：US16982007
申请日：2019-03-20
Inventor： Marie-Rita HOJEIJ , Charbel ABDEL NOUR , Joumana FARAH , Catherine DOUILLARD
Abstract: A method and system for assigning power to sub-bands in a multiple access communications system, where users are assigned iteratively to sub-bands, and at each iteration a provisional partial power budget is determined for the subset of sub-bands comprising the sub-bands to which users have been assigned in the present time slot and the sub-band under consideration in the sequence, where the fraction of the total available power determined as the provisional partial power budget corresponds to the fraction of the number of sub-bands in the subset from the total number of sub-bands to be assigned, and the provisional power allocation for the sub-band under consideration is obtained by performing a waterfilling distribution of the provisional partial power budget amongst the subset of the sub-bands, based on the channel gain of the users already assigned to sub-bands in the present time slot.
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公开(公告)号：US20210014627A1
公开(公告)日：2021-01-14
申请号：US17036215
申请日：2020-09-29
Applicant: INSTITUT MINES TELECOM
Inventor： Raphael Blouet , Slim Essid
IPC: H04S7/00
Abstract: The invention relates to a method for broadcasting a spatialized audio stream to terminals (TERM) of spectators attending a sports event. The method comprises the acquisition of a plurality of audio streams constituting a soundscape (SS). The soundscape (SS) is analyzed by a server (SERV) in order for the sound spatialization of the audio streams and of the playback thereof on terminals (TERM), depending both on the localization of the audio flows and also the position of the spectators.
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Patent Agency Ranking
公开(公告)号：US10855505B2
公开(公告)日：2020-12-01
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.
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27.发明申请公开(公告)号：US20200373664A1
公开(公告)日：2020-11-26
申请号：US16771209
申请日：2018-12-17
Inventor： Jean-Philippe COUPEZ
Abstract: A multiband antenna arrangement includes at least two main conductive elements, the first main conducting element resonating at a first fundamental mode of a first electromagnetic radiation and the second main conducting element resonating at a second fundamental mode of a second electromagnetic radiation, wherein the second main conductive element is connected to the first main conductive element at a feed connection located at a position defined as a function of bellies of current of the first electromagnetic radiation and the antenna arrangement has more resonating modes than the first main conductive element. The antenna arrangement may also be configured so that some of the resonating modes of the first main conductive element have a bandwidth that is enlarged in comparison to the corresponding bandwidth of these resonating modes for the first main conductive element. A design method of the antenna arrangement to provide a match between the resonating modes of the antenna arrangement and a specification defined by a list of frequencies and, possibly, corresponding bandwidths at a predefined matching level and selectivity, as well, as in certain embodiments, a predefined form factor.
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公开(公告)号：US10761181B2
公开(公告)日：2020-09-01
申请号：US15735734
申请日：2016-06-21
Applicant: INSTITUT MINES-TELECOM
Inventor： Alexandre Vervisch-Picois , Nel Samama
Abstract: A method for locating at least one receiver in a positioning system. The system includes: at least two generators, each generator emitting, on a single carrier, at least two signals that each have a different code, and a receiver configured to detect the signals emitted by the generators. In the method: the receiver measures, for each generator, the phase difference between both signals emitted by the generator, and at least one geometric size, representing the position of the receiver in relation to the generators, is calculated on the basis of the measurements of the phase difference in order to locate the receiver in the positioning system.
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公开(公告)号：US10735224B2
公开(公告)日：2020-08-04
申请号：US15550922
申请日：2016-02-15
Applicant: INSTITUT MINES TELECOM
Inventor： Ghaya Rekaya-Ben Othman , Asma Mejri
Abstract: A method, device, and a computer program are provided to decode a signal received through a transmission channel in a communication system, the received signal being represented by a signal vector. The method comprises: calculating an initial estimate of a transmitted symbol vector carried by the received signal vector; calculating a bound parameter (201) from a linear function of the initial estimate of the transmitted symbol vector, the linear function being defined by a slope coefficient and an intercept coefficient, the method further comprising: determining estimated symbols representative of the transmitted symbols carried by the received signal, the estimated symbols being determined from a set of candidate lattice points, each lattice point comprising a set of components, each component of a candidate lattice point being searched in a search interval (203), the search interval having at least one search interval bound computed from the bound parameter; determining (205) the estimated symbols from the closest lattice point to the received signal vector among the candidate lattice points.
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30.发明授权公开(公告)号：US10734729B2
公开(公告)日：2020-08-04
申请号：US15849205
申请日：2017-12-20
Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNE
Inventor： Jean-Philippe Coupez
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.
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