Patents Assigned to Institut Mines Telecom/Telecom Bretagne
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Patent number: 10944163Abstract: The invention relates to an antennal structure adapted to be disposed on an earth plane comprising: a three-dimensional support substrate made of a dielectric material which is partially hollowed out and comprising a peripheral wall which extends between a proximal end and a distal end, said support substrate defining an internal volume; a first conducting pattern inscribed on the peripheral wall of the support substrate, the first conducting pattern comprising a lower end adapted to be connected to an earth plane and an upper end; a second conducting pattern contained in the volume of the substrate, the second pattern being connected electrically to the upper end of the first pattern.Type: GrantFiled: July 15, 2014Date of Patent: March 9, 2021Assignee: INSTITUT MINES TELECOM/TELECOM BRETAGNEInventor: Jean-Philippe Coupez
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Patent number: 10879612Abstract: 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.Type: GrantFiled: August 10, 2017Date of Patent: December 29, 2020Assignee: INSTITUT MINES-TELECOM/TELECOM BRETAGNEInventor: Jean-Philippe Coupez
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Patent number: 10856172Abstract: 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.Type: GrantFiled: December 8, 2017Date of Patent: December 1, 2020Assignees: INSTITUT MINES-TELECOM / TELECOM BRETAGNE, UNIVERSITÉ LIBANAISE, UNIVERSITÉ SAINT-ESPRIT DE KASLIKInventors: Marie-Rita Hojeij, Joumana Farah, Charbel Abdel Nour, Catherine Douillard
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Patent number: 10855505Abstract: 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.Type: GrantFiled: August 10, 2017Date of Patent: December 1, 2020Assignee: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
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Patent number: 10734729Abstract: 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.Type: GrantFiled: December 20, 2017Date of Patent: August 4, 2020Assignee: INSTITUT MINES-TELECOM/TELECOM BRETAGNEInventor: Jean-Philippe Coupez
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Patent number: 10396847Abstract: A receiver for Filter Bank Multicarrier frequency spread signals such as FBMC, FBMC/OQAM, OFDM, comprises a linear phase rotation module adapted to introduce a linear phase rotation to a received time domain signal, a discrete Fourier transform and a Finite Impulse response digital filter. The coefficients of the digital filter define a shift of the frequency response of the prototype filter of the receiver, and the coefficients of the digital filter are fixed so as to compensate the linear phase rotation introduced by the filter. The frequency shift introduced may be equal to the reciprocal of a power of two of the modulation sub carrier spacing.Type: GrantFiled: June 12, 2017Date of Patent: August 27, 2019Assignee: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
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Patent number: 10257791Abstract: 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.Type: GrantFiled: July 18, 2017Date of Patent: April 9, 2019Assignees: INSTITUT MINES-TELECOM / TELECOM BRETAGNE, UNIVERSITÉ LIBANAISE, UNIVERSITÉ SAINT-ESPRIT DE KASLIKInventors: Marie-Rita Hojeij, Joumana Farah, Charbel Abdel Nour, Catherine Douillard
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Patent number: 10230547Abstract: A method of designing a digital filter for example for use in an FBMC/OQAM telecommunications system, with a target overlapping factor and meeting a specified signal to interference ratio is described, whereby a candidate filter design defined by an impulse response, satisfying the Nyquist criterion and having an overlapping factor higher than the target is selected, and the time and frequency coefficients of its impulse response inverted to define a new filter design; and truncating the impulse response defining said new filter design to the minimum number of coefficients achieving said specified signal to interference ratio.Type: GrantFiled: April 20, 2017Date of Patent: March 12, 2019Assignee: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy Nadal, Charbel Abdel Nour, Amer Baghdadi
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Patent number: 10069198Abstract: The invention relates to a compact multi-level antenna including: a ground plane; a radiating element including n?2 portions extending in n?2 parallel planes in a planar pattern, the planes defining a volume above the ground plane, the radiating element including a first end connected to the ground plane and a second end ending with an open circuit.Type: GrantFiled: May 30, 2014Date of Patent: September 4, 2018Assignee: Institut Mines Telecom/Telecom BretagneInventor: Jean-Philippe Coupez
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Publication number: 20180183144Abstract: 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.Type: ApplicationFiled: December 20, 2017Publication date: June 28, 2018Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventor: Jean-Philippe COUPEZ
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Publication number: 20180176815Abstract: 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.Type: ApplicationFiled: December 8, 2017Publication date: June 21, 2018Applicants: INSTITUT MINES-TELECOM / TELECOM BRETAGNE, Université Libanaise, Université Saint-Esprit de KaslikInventors: Marie-Rita HOJEIJ, Joumana FARAH, Charbel ABDEL NOUR, Catherine DOUILLARD
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Patent number: 9941568Abstract: The invention relates to a transition device between a printed transmission line on a dielectric substrate and a rectangular waveguide including a front face forming an inlet of the waveguide, a rear face parallel to the front face and forming an outlet of the waveguide, a lower face, an upper face parallel to the lower face, the upper and lower faces extending between the front and rear faces, the waveguide being a block of dielectric material whereof the faces are fully metallized except for the front face and the rear face, the transition device including: a three-dimensional cavity formed in the volume of the waveguide between the inlet of the waveguide, further forming the inlet of the cavity, and the rear face widening, the cavity being at an inlet height of the lower face of the waveguide and ending at a distance from the inlet of the cavity at an outlet height greater than the inlet height; an electrical connection extending from the transmission line along the front face of the waveguide up to the inType: GrantFiled: September 19, 2014Date of Patent: April 10, 2018Assignee: INSTITUT MINES TELECOM/TELECOM BRETAGNEInventors: Jean-Philippe Coupez, Sylvain Chenu
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Publication number: 20180053999Abstract: 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.Type: ApplicationFiled: August 10, 2017Publication date: February 22, 2018Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventor: Jean-Philippe Coupez
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Publication number: 20180048510Abstract: 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.Type: ApplicationFiled: August 10, 2017Publication date: February 15, 2018Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy NADAL, Charbel ABDEL NOUR, Amer BAGHDADI
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Publication number: 20180027507Abstract: 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.Type: ApplicationFiled: July 18, 2017Publication date: January 25, 2018Applicants: INSTITUT MINES-TELECOM / TELECOM BRETAGNE, Université Libanaise, Université Saint-Esprit de KaslikInventors: Marie-Rita HOJEIJ, Joumana FARAH, Charbel ABDEL NOUR, Catherine DOUILLARD
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Publication number: 20170366222Abstract: A receiver for Filter Bank Multicarrier frequency spread signals such as FBMC, FBMC/OQAM, OFDM, comprises a linear phase rotation module adapted to introduce a linear phase rotation to a received time domain signal, a discrete Fourier transform and a Finite Impulse response digital filter. The coefficients of the digital filter define a shift of the frequency response of the prototype filter of the receiver, and the coefficients of the digital filter are fixed so as to compensate the linear phase rotation introduced by the filter. The frequency shift introduced may be equal to the reciprocal of a power of two of the modulation sub carrier spacing.Type: ApplicationFiled: June 12, 2017Publication date: December 21, 2017Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy NADAL, Charbel ABDEL NOUR, Amer BAGHDADI
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Publication number: 20170310505Abstract: A method of designing a digital filter for example for use in an FBMC/OQAM telecommunications system, with a target overlapping factor and meeting a specified signal to interference ratio is described, whereby a candidate filter design defined by an impulse response, satisfying the Nyquist criterion and having an overlapping factor higher than the target is selected, and the time and frequency coefficients of its impulse response inverted to define a new filter design; and truncating the impulse response defining said new filter design to the minimum number of coefficients achieving said specified signal to interference ratio.Type: ApplicationFiled: April 20, 2017Publication date: October 26, 2017Applicant: INSTITUT MINES-TELECOM / TELECOM BRETAGNEInventors: Jérémy NADAL, Charbel ABDEL NOUR, Amer BAGHDADI
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Publication number: 20160104933Abstract: The invention relates to a compact multi-level antenna including: a ground plane; a radiating element including n?2 portions extending in n?2 parallel planes in a planar pattern, the planes defining a volume above the ground plane, the radiating element including a first end connected to the ground plane and a second end ending with an open circuit.Type: ApplicationFiled: May 30, 2014Publication date: April 14, 2016Applicant: Institut Mines Telecom/Telecom BretagneInventor: Jean-Philippe Coupez