Patents by Inventor Christophe Molko
Christophe Molko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10056927Abstract: A device for processing a received signal by a receiver disrupted by a transmitter, wherein the transmitters and receiver are co-located, includes: a first coupler configured to take a first reference signal; an analog circuit for processing the first reference signal; a second coupler configured to combine the modified reference signal with the signal received by an antenna of the receiver; a first analog-to-digital conversion module digitizing the first reference signal; the second analog conversion module digitizing the combined signal in order to deliver a digital combined signal to the digital signal-processing device, wherein signal-processing device delivers a resulting digital signal to a data-processing module of the receiver device.Type: GrantFiled: June 6, 2017Date of Patent: August 21, 2018Assignee: AIRBUS DS SLCInventors: Olivier Gagey, Philippe Mege, Christophe Molko, Olivier Perrin
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Publication number: 20170353202Abstract: A device for processing a received signal by a receiver disrupted by a transmitter, wherein the transmitters and receiver are co-located, includes: a first coupler configured to take a first reference signal; an analogue circuit for processing the first reference signal; a second coupler configured to combine the modified reference signal with the signal received by an antenna of the receiver; a first analogue-to-digital conversion module digitising the first reference signal; the second analogue conversion module digitising the combined signal in order to deliver a digital combined signal to the digital signal-processing device, wherein signal-processing device delivers a resulting digital signal to a data-processing module of the receiver device.Type: ApplicationFiled: June 6, 2017Publication date: December 7, 2017Inventors: Olivier GAGEY, Philippe MEGE, Christophe MOLKO
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Patent number: 9496903Abstract: A method for reducing the crest factor of a wideband signal including N narrowband signals, N being a natural integer greater than or equal to two, the method, implemented by an emitting equipment, including phase shifting the narrowband signals between them in such a way as to reduce the crest factor.Type: GrantFiled: July 15, 2015Date of Patent: November 15, 2016Assignee: AIRBUS DS SASInventors: Philippe Mege, Christophe Molko
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Publication number: 20160149600Abstract: A method for reducing the crest factor of a wideband signal including N narrowband signals, N being a natural integer greater than or equal to two, the method, implemented by an emitting equipment, including phase shifting the narrowband signals between them in such a way as to reduce the crest factor.Type: ApplicationFiled: July 15, 2015Publication date: May 26, 2016Inventors: Philippe MEGE, Christophe MOLKO
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Patent number: 9344226Abstract: This transmission comprising a first transmission of a packet (52), comprising the steps consisting in: a first processing (54) of said packet (52) to obtain a first packet (56); and a coding (57, 59) of the first packet (56); wherein, when the first coded packet is received erroneous, the method comprises a second transmission of said packet, comprising: the steps implemented in the transmitter, consisting in: a second processing (84) of said packet (52) to obtain a second packet (86); and a coding (87, 89) of the second packet (86); and the steps implemented in the receiver, consisting in: a modification of the first and/or the second coded packets to obtain two packets in which the difference due to the first and second processings is compensated for: a combination (110) of both packets according to a HARQ procedure; and a decoding (112) of the combined packet.Type: GrantFiled: October 5, 2012Date of Patent: May 17, 2016Assignees: CASSIDIAN SAS, CASSIDIAN FINLAND OYInventors: Philippe Mege, Christophe Molko, Marc Mouffron, Christophe Brutel
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Patent number: 9031157Abstract: For clipping a signal with respect to a clipping threshold (Amax), a signal portion above the clipping threshold and a peak (Pk) in the signal portion are detected, a clipping function depending on end times (ts, te) of the signal portion, the amplitude of the detected peak and the clipping threshold is derived, and the signal portion is clipped by multiplying it by the clipping function. The first portion can be enlarged up to the lowest boundary points (t1+1, t2?1) on the first ascending portion and the last descending portion of the detected peak. Spectral leakage in the sidebands out to the frequency band of the clipped signal is eliminated by a filtering device. The filtered dipped signal to the input of the amplifier has peaks as close to the saturation threshold of a power amplifier as possible.Type: GrantFiled: August 12, 2011Date of Patent: May 12, 2015Inventors: Christophe Molko, Matti Limingoja
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Patent number: 8904264Abstract: An error correction encoding method is provided for encoding source digital data, having the form of a frame, wherein the data can be classified into N classes, where N is an integer at least equal to 2. The encoding method includes: a first step of recursive systematic convolutional encoding of the data of the class 1; an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N?1: nth mixing (108n+1) of a set formed by data of the class n+1 (102n+1), the systematic data and the parity data from a preceding encoding step; and (n+1)th recursive systematic convolutional encoding (110n+1) of data formed by the result of nth mixing. A decoding method is provided for decoding encoded data with the encoding method, using an associated encoding device and a decoding device.Type: GrantFiled: March 14, 2012Date of Patent: December 2, 2014Assignee: Cassidian SASInventors: Alina Alexandra Florea, Hang Nguyen, Laurent Martinod, Christophe Molko
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Publication number: 20140250325Abstract: This transmission comprising a first transmission of a packet (52), comprising the steps consisting in: a first processing (54) of said packet (52) to obtain a first packet (56); and a coding (57, 59) of the first packet (56); wherein, when the first coded packet is received erroneous, the method comprises a second transmission of said packet, comprising: the steps implemented in the transmitter, consisting in: a second processing (84) of said packet (52) to obtain a second packet (86); and a coding (87, 89) of the second packet (86); and the steps implemented in the receiver, consisting in: a modification of the first and/or the second coded packets to obtain two packets in which the difference due to the first and second processings is compensated for: a combination (110) of both packets according to a HARQ procedure; and a decoding (112) of the combined packet.Type: ApplicationFiled: October 5, 2012Publication date: September 4, 2014Inventors: Philippe Mege, Christophe Molko, Marc Mouffron, Christophe Brutel
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Patent number: 8782501Abstract: An error correction encoding method is provided for encoding in parallel source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2. The encoding method includes: a first recursive systematic convolutional encoding step of data to be encoded, formed by the data of the class 1; and an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N?1: nth mixing of a set formed by the data of the class n+1 and the systematic data of the preceding encoding; and (n+1)th recursive systematic convolutional encoding of data to be encoded, formed by the result of the nth mixing. Also disclosed is a related decoding method, as well as an associated encoding and decoding devices.Type: GrantFiled: March 14, 2012Date of Patent: July 15, 2014Assignee: Cassidian SASInventors: Alina Alexandra Florea, Hang Nguyen, Laurent Martinod, Christophe Molko
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Publication number: 20140006909Abstract: The present invention relates to an error correction encoding method for encoding so-called source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2. The encoding method according to the invention comprises: a first step of recursive systematic convolutional encoding of the data of the class 1; an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N?1: nth mixing (108n+1) of a set formed by data of the class n+1 (102n+1), the systematic data and the parity data from a preceding encoding step; (n+1)th recursive systematic convolutional encoding (110n+1) of data formed by the result of nth mixing. The invention also relates to a method for decoding encoded data with the encoding method according to the invention, as well as associated encoding device and decoding device.Type: ApplicationFiled: March 14, 2012Publication date: January 2, 2014Applicant: CASSIDIAN SASInventors: Alina Alexandra Florea, Hang Nguyen, Laurent Martinod, Christophe Molko
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Publication number: 20140006910Abstract: An error correction encoding method is provided for encoding in parallel source digital data, having the form of a frame, wherein said data can be classified into N classes, where N is an integer at least equal to 2. The encoding method includes: a first recursive systematic convolutional encoding step of data to be encoded, formed by the data of the class 1; and an implementation of the following steps, for each n ranging from 1 to M, where M is a positive integer equal to or lower than N?1: nth mixing of a set formed by the data of the class n+1 and the systematic data of the preceding encoding; and (n+1)th recursive systematic convolutional encoding of data to be encoded, formed by the result of the nth mixing. Also disclosed is a related decoding method, as well as an associated encoding and decoding devices.Type: ApplicationFiled: March 14, 2012Publication date: January 2, 2014Applicant: CASSIDIAN SASInventors: Alina Alexandra Florea, Hang Nguyen, Laurent Martinod, Christophe Molko
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Publication number: 20130230121Abstract: For clipping a signal with respect to a clipping threshold (Amax), a signal portion above the clipping threshold and a peak (Pk) in the signal portion are detected, a clipping function depending on end times (ts, te) of the signal portion, the amplitude of the detected peak and the clipping threshold is derived, and the signal portion is clipped by multiplying it by the clipping function. The first portion can be enlarged up to the lowest boundary points (t1+1, t2?1) on the first ascending portion and the last descending portion of the detected peak. Spectral leakage in the sidebands out to the frequency band of the clipped signal is eliminated by a filtering device. The filtered dipped signal to the input of the amplifier has peaks as dose to the saturation threshold of a power amplifier as possible.Type: ApplicationFiled: August 12, 2011Publication date: September 5, 2013Applicant: CASSIDIAN SASInventors: Christophe Molko, Matti Limingoja
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Patent number: 8014778Abstract: A mobile terminal of a digital cellular radiocommunication system that is in the receiving phase in a group call while roaming in a current cell, indicates to a fixed network element of the system, a given destination cell out of a number N of cells adjacent to the current cell. The system uses a time and/or frequency division multiple access method, and any modulation method. The mobile terminal sends an identification sequence of the destination cell in a time slot of an inbound signaling channel which is a contention channel. The identification sequence comprises a predetermined identification pattern out of a determined number P of identification patterns of different respective values, where P is an integer number such that 1<P?N. The values of the P identification patterns are such that they correspond to mutually-orthogonal modulated signals.Type: GrantFiled: October 20, 2006Date of Patent: September 6, 2011Assignee: EADS Secure NetworksInventors: Gérard Marque-Pucheu, Christophe Molko
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Publication number: 20080293406Abstract: A mobile terminal of a digital cellular radiocommunication system that is in the receiving phase in a group call while roaming in a current cell, indicates to a fixed network element of the system, a given destination cell out of a number N of cells adjacent to the current cell The system uses a time and/or frequency division multiple access method, and any modulation method. The mobile terminal sends an identification sequence of the destination cell in a time slot of an inbound signalling channel which is a contention channel.Type: ApplicationFiled: October 20, 2006Publication date: November 27, 2008Applicant: EADS SECURE NETWORKSInventors: Gerard Marque-Pucheu, Christophe Molko
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Patent number: 7454219Abstract: A method of synchronization on the uplink channel of a Simulcast network with a plurality of fixed receivers (BS1-BS4) and a selection unit (20), comprises the following steps. All the receivers are placed in a synchronization search mode (702), in which they search for a synchronization pattern sent by the mobile terminal over the uplink channel. When a receiver detects the synchronization pattern, it produces an initial synchronization context (SC3(0)), which indicates the delay of the radio signal relative to a time reference of the network, and transmits it (705) to the selection unit. The latter broadcasts it (707) to all the receivers that use it to start processing the radio signal. Then, each receiver maintains its synchronization context and transmits it (708-712) to the selection unit on each frame. At regular intervals, the value of an updated synchronization context (SC2(i)) is broadcast (714) to the receivers.Type: GrantFiled: December 14, 2004Date of Patent: November 18, 2008Assignee: EADS Secure NetworksInventors: Philippe Mege, Christophe Molko, Frédéric Rosin
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Patent number: 7269232Abstract: The invention concerns a device for producing a phase and amplitude modulated signal (G) suitable for radio transmission via an antenna (30), based on the EER technique and means (20) for temporal clamping of a phase controlling signal (D) and an amplitude controlling signal (F) so that the phase modulating component is synchronized with the amplitude modulating component in the output signal (G).Type: GrantFiled: March 28, 2001Date of Patent: September 11, 2007Assignee: Nortel Networks FranceInventors: Olivier Gagey, Christophe Molko, Fabrice Belveze
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Publication number: 20070099639Abstract: A method of synchronization on the uplink channel of a Simulcast network with a plurality of fixed receivers (BS1-BS4) and a selection unit (20), comprises the following steps. All the receivers are placed in a synchronization search mode (702), in which they search for a synchronization pattern sent by the mobile terminal over the uplink channel. When a receiver detects the synchronization pattern, it produces an initial synchronization context (SC3(0)), which indicates the delay of the radio signal relative to a time reference of the network, and transmits it (705) to the selection unit. The latter broadcasts it (707) to all the receivers that use it to start processing the radio signal. Then, each receiver maintains its synchronization context and transmits it (708-712) to the selection unit on each frame. At regular intervals, the value of an updated synchronization context (SC2(i)) is broadcast (714) to the receivers.Type: ApplicationFiled: December 14, 2004Publication date: May 3, 2007Applicant: Eads Secure NetworksInventors: Philippe Mege, Christophe Molko, Frederic Rosin
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Patent number: 6920115Abstract: A transmitter produces radio signal bursts in periodic time slots allocated to a time-division multiplexed channel. The radio signal of each burst is made up of digital symbols comprising two training sequences enabling the receiver to estimate demodulation parameters and information symbols which the receiver can estimate by a demodulation applied using the estimated parameters. The two training sequences are placed at the start and the end of the burst so that the receiver uses them to demodulate the received signal in the order of the symbols and demodulate the received signal again in the reverse order of the symbols.Type: GrantFiled: December 6, 2000Date of Patent: July 19, 2005Assignee: Matra Nortel CommunicationsInventor: Christophe Molko
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Publication number: 20040037364Abstract: The invention concerns a device for producing a phase and amplitude modulated signal (G) suitable for radio transmission via an antenna (30), based on the EER technique and means (20) for temporal clamping of a phase controlling signal (D) and an amplitude controlling signal (F) so that the phase modulating component is synchronised with the amplitude modulating component in the output signal (G).Type: ApplicationFiled: March 24, 2003Publication date: February 26, 2004Inventors: Olivier Gagey, Christophe Molko, Fabrice Belveze
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Publication number: 20020009065Abstract: A transmitter produces radio signal bursts in periodic time slots allocated to a time-division multiplexed channel. The radio signal of each burst is made up of digital symbols comprising two training sequences enabling the receiver to estimate demodulation parameters and information symbols which the receiver can estimate by a demodulation applied using the estimated parameters. The two training sequences are placed at the start and the end of the burst so that the receiver uses them to demodulate the received signal in the order of the symbols and demodulate the received signal again in the reverse order of the symbols.Type: ApplicationFiled: December 6, 2000Publication date: January 24, 2002Inventor: Christophe Molko