Patents by Inventor Julien Pons
Julien Pons 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: 9722765Abstract: The present invention relates to methods and apparatuses for managing the time slots in time division duplex (TDD) frames in an xDSL system. According to certain aspects, power savings in a TDD system operating with vectoring may be achieved with sending of quiet symbols in time slots that do not have data and through the efficient configuration of time slots with data and/or idle symbols so as to limit the amount of processing by the vectoring engine within the DO portion of each TDD frame. In embodiments, a central controller in a DPU monitors the data buffers at the transmitter input on each line and computes an optimal configuration of the time slots in the DO portion of the TDD frame to achieve an optimal balance between performance and power dissipation.Type: GrantFiled: October 16, 2014Date of Patent: August 1, 2017Assignee: IKANOS COMMUNICATIONS, INC.Inventors: Massimo Sorbara, Julien Pons
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Publication number: 20150109970Abstract: The present invention relates to methods and apparatuses for managing the time slots in time division duplex (TDD) frames in an xDSL system. According to certain aspects, power savings in a TDD system operating with vectoring may be achieved with sending of quiet symbols in time slots that do not have data and through the efficient configuration of time slots with data and/or idle symbols so as to limit the amount of processing by the vectoring engine within the DO portion of each TDD frame. In embodiments, a central controller in a DPU monitors the data buffers at the transmitter input on each line and computes an optimal configuration of the time slots in the DO portion of the TDD frame to achieve an optimal balance between performance and power dissipation.Type: ApplicationFiled: October 16, 2014Publication date: April 23, 2015Inventors: Massimo SORBARA, Julien PONS
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Patent number: 8891638Abstract: A system, method, and a computer readable medium having instructions thereupon for synchronized multi-user multi-carrier communications are provided. For example, a synchronized multi-user multi-carrier communication system includes a transmitter, a receiver communicatively coupled to the transmitter via a plurality of communication channels associated with multiple users, and a computing device, coupled to at least one of the transmitter and the receiver, comprising a memory device in communication with one or more processors. The one or more processors are configured to obtain noise samples for the plurality of communication channels, determine a coupling between carriers on the plurality of communication channels, determine a noise model for a carrier based upon the noise samples and the determined coupling, and store the noise model in the memory device.Type: GrantFiled: February 8, 2012Date of Patent: November 18, 2014Assignee: Ikanos Communications, Inc.Inventors: Julien Pons, Laurent Alloin, Laurent Pierrugues
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Patent number: 8457219Abstract: Included are embodiments for self protection. At least one embodiment includes Self-protection Unit for protecting a signal that includes a first receiving component configured to receive data, the received data being received as at least one frame and a subframing component configured to subframe at least a portion of the received data, wherein subframing includes converting the at least one into a plurality of subframes. Some embodiments include a subframe interleaver component configured to interleave at least a portion of the subframes.Type: GrantFiled: December 22, 2006Date of Patent: June 4, 2013Assignee: Ikanos Communications, Inc.Inventors: Julien Pons, Amitkumar Mahadevan, Patrick Duvaut
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Patent number: 8418018Abstract: A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.Type: GrantFiled: September 24, 2009Date of Patent: April 9, 2013Assignee: Ikanos Communications, Inc.Inventors: Julien Pons, Patrick Duvaut, Oliver Moreno, Laurent Pierrugues
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Publication number: 20120201286Abstract: A system, method, and a computer readable medium having instructions thereupon for synchronized multi-user multi-carrier communications are provided. For example, a synchronized multi-user multi-carrier communication system includes a transmitter, a receiver communicatively coupled to the transmitter via a plurality of communication channels associated with multiple users, and a computing device, coupled to at least one of the transmitter and the receiver, comprising a memory device in communication with one or more processors. The one or more processors are configured to obtain noise samples for the plurality of communication channels, determine a coupling between carriers on the plurality of communication channels, determine a noise model for a carrier based upon the noise samples and the determined coupling, and store the noise model in the memory device.Type: ApplicationFiled: February 8, 2012Publication date: August 9, 2012Inventors: Julien Pons, Laurent Alloin, Laurent Pierrugues
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Patent number: 8032800Abstract: Included are embodiments for subframe interleaving. At least one embodiment of a method includes receiving at least one subframe, the at least one subframe being derived from a plurality of frames of data and interspersing at least a portion of the at least one subframe according to a predetermined subframe interleaving strategy.Type: GrantFiled: December 28, 2006Date of Patent: October 4, 2011Assignee: Ikanos Communications, Inc.Inventors: Julien Pons, Amitkumar Mahadevan, Patrick Duvaut
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Publication number: 20100017678Abstract: A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.Type: ApplicationFiled: September 24, 2009Publication date: January 21, 2010Inventors: Julien Pons, Patrick Duvaut, Oliver Moreno, Laurent Pierrugues
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Patent number: 7613985Abstract: A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.Type: GrantFiled: October 22, 2004Date of Patent: November 3, 2009Assignee: Ikanos Communications, Inc.Inventors: Julien Pons, Patrick Duvaut, Oliver Moreno, Laurent Pierrugues
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Patent number: 7555052Abstract: Method and System for evaluating a turbo-coding scheme suitable for VDSL2 systems. The scheme is a Turbo-Trellis Coded Modulation TTCM that makes use of a Parallel Concatenated Convolutional Code (PCCC) including an inner Latin square/rectangular matrix of Random sequence pattern Interleaver (LRI) of approximately 2044 bits. In the presence of the outer Reed Solomon Code but without an outer interleaver (fast mode), the method and system provides 7.1 dB of average net coding gain, i.e., 2.6 dB of coding gain improvement relative to the standard 16 states 4-dimensional (4-D) trellis code used in current ADSL2 systems. The substantial coding gain achieved through the method and system, leads to an increase in the VDSL2 rate by 38% at 6 kft against local exchange carriers, such as ILEC (SBC) conditions with approximately 1.5 ms of latency. By encoding only two bits per tone (i.e., 1 bit per dimension), the turbo code implementation complexity is kept reasonable.Type: GrantFiled: October 13, 2005Date of Patent: June 30, 2009Assignee: Conexant Systems, Inc.Inventors: Julien Pons, Patrick Duvaut
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Patent number: 7457368Abstract: Disclosed herein are various techniques for multilevel channel coding. For a given binary word comprising a plurality of bits, the least-significant bit may be encoded by a boosted coding technique, such as turbo channel coding or low density parity check (LDPC) channel coding. A subset of the remaining bits of the binary word may be encoded using trellis coded modulation (TCM) coding. The results of the boosted channel coding and the TCM coding may be mapped to one or more symbols. The one or more symbols then may be transmitted to a receiver using transmission techniques well known to those skilled in the art. The present invention finds particular benefit in digital subscriber line (DSL)-based systems in accord with the ITU G.922.1 Recommendation and similar standards.Type: GrantFiled: June 4, 2004Date of Patent: November 25, 2008Assignee: Brooktree Broadband Holding, Inc.Inventors: Patrick Duvaut, Ehud Langberg, Julien Pons, William Scholtz
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Publication number: 20070153838Abstract: Included are embodiments for subframe interleaving. At least one embodiment of a method includes receiving at least one subframe, the at least one subframe being derived from a plurality of frames of data and interspersing at least a portion of the at least one subframe according to a predetermined subframe interleaving strategy.Type: ApplicationFiled: December 28, 2006Publication date: July 5, 2007Applicant: CONEXANT SYSTEMS, INC.Inventors: Julien Pons, Amitkumar Mahadevan, Patrick Duvaut
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Publication number: 20070157065Abstract: Included are embodiments for self protection. At least one embodiment includes Self-protection Unit for protecting a signal that includes a first receiving component configured to receive data, the received data being received as at least one frame and a subframing component configured to subframe at least a portion of the received data, wherein subframing includes converting the at least one into a plurality of subframes. Some embodiments include a subframe interleaver component configured to interleave at least a portion of the subframes.Type: ApplicationFiled: December 22, 2006Publication date: July 5, 2007Applicant: CONEXANT SYSTEMS, INC.Inventors: Julien Pons, Amitkumar Mahadevan, Patrick Duvaut
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Publication number: 20060078062Abstract: Method and System for evaluating a turbo-coding scheme suitable for VDSL2 systems. The scheme is a Turbo-Trellis Coded Modulation TTCM that makes use of a Parallel Concatenated Convolutional Code (PCCC) including an inner Latin square/rectangular matrix of Random sequence pattern Interleaver (LRI) of approximately 2044 bits. In the presence of the outer Reed Solomon Code but without an outer interleaver (fast mode), the method and system provides 7.1 dB of average net coding gain, i.e., 2.6 dB of coding gain improvement relative to the standard 16 states 4-dimensional (4-D) trellis code used in current ADSL2 systems. The substantial coding gain achieved through the method and system, leads to an increase in the VDSL2 rate by 38% at 6 kft against local exchange carriers, such as ILEC (SBC) conditions with approximately 1.5 ms of latency. By encoding only two bits per tone (i.e., 1 bit per dimension), the turbo code implementation complexity is kept reasonable.Type: ApplicationFiled: October 13, 2005Publication date: April 13, 2006Applicant: Conexant Systems, Inc.Inventors: Julien Pons, Patrick Duvaut
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Publication number: 20050111565Abstract: A system and method for encoding information is disclosed. In one embodiment, information is encoded using a high protection code for the least significant bit and a low protection code for the next three most significant bits. The remaining bits are uncoded. The high protection code may be a turbo code and the low protection code may be a trellis coded modulation code. In this embodiment, the collection of bits is then mapped according to a diagonally shifted QAM constellation technique.Type: ApplicationFiled: October 22, 2004Publication date: May 26, 2005Inventors: Julien Pons, Patrick Duvaut, Oliver Moreno, Laurent Pierrugues
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Publication number: 20050010853Abstract: Disclosed herein are various techniques for multilevel channel coding. For a given binary word comprising a plurality of bits, the least-significant bit may be encoded by a boosted coding technique, such as turbo channel coding or low density parity check (LDPC) channel coding. A subset of the remaining bits of the binary word may be encoded using trellis coded modulation (TCM) coding. The results of the boosted channel coding and the TCM coding may be mapped to one or more symbols. The one or more symbols then may be transmitted to a receiver using transmission techniques well known to those skilled in the art. The present invention finds particular benefit in digital subscriber line (DSL)-based systems in accord with the ITU G.992-1 Recommendation and similar standards.Type: ApplicationFiled: June 4, 2004Publication date: January 13, 2005Inventors: Patrick Duvant, Ehud Langberg, Julien Pons, William Sholtz