Patents by Inventor Carl Nuzman

Carl Nuzman 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).

  • Publication number: 20210288661
    Abstract: In accordance with an embodiment, the method includes determining a second sequence of numbers of digits for encoding the respective integer coefficient values of the first sequence, the second sequence including, as first element, a first number of digits for encoding the first integer coefficient value of the first sequence, and as second and subsequent elements, constrained numbers of digits that are greater than or equal to respective minimum required numbers of digits for encoding the second and subsequent integer coefficient values of the first sequence. The constrained numbers of digits are such that any two successive elements of the second sequence do not differ from each other by more than a given threshold value. The method further includes encoding difference values between the successive elements of the second sequence; and encoding the integer coefficient values of the first sequence using the respective numbers of digits of the second sequence.
    Type: Application
    Filed: August 28, 2017
    Publication date: September 16, 2021
    Applicant: Alcatel Lucent
    Inventor: Carl NUZMAN
  • Patent number: 11115080
    Abstract: A vectoring controller is configured to determine first coefficient values for a vectoring matrix at a first tone based on a first number of iterations through an iterative update algorithm and a first channel matrix estimate at the first tone, and to determine second coefficient values for the vectoring matrix at a second neighboring tone based on a second number of iterations through the iterative update algorithm and a second channel matrix estimate at the second tone. The vectoring controller is configured to start with the first coefficient values as initial values for the respective second coefficient values in the iterative update algorithm. The second number of iterations is lower than or equal to the first number of iterations.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: September 7, 2021
    Assignee: Alcatel Lucent
    Inventors: Rodrigo Bastos Moraes, Paschalis Tsiaflakis, Mihaela Jivanescu, Jochen Maes, Carl Nuzman
  • Publication number: 20210194539
    Abstract: A vectoring controller is configured to determine first coefficient values for a vectoring matrix at a first tone based on a first number of iterations through an iterative update algorithm and a first channel matrix estimate at the first tone, and to determine second coefficient values for the vectoring matrix at a second neighboring tone based on a second number of iterations through the iterative update algorithm and a second channel matrix estimate at the second tone. The vectoring controller is configured to start with the first coefficient values as initial values for the respective second coefficient values in the iterative update algorithm. The second number of iterations is lower than or equal to the first number of iterations.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 24, 2021
    Applicant: Alcatel Lucent
    Inventors: Rodrigo BASTOS MORAES, Paschalis TSIAFLAKIS, Mihaela JIVANESCU, Jochen MAES, Carl NUZMAN
  • Patent number: 10998932
    Abstract: A multi-line digital transceiver configured to use digital signal vectoring in a manner that causes effects of crosstalk between distinct groups of subscriber lines to be effectively mitigated, without directly attempting to mitigate effects of crosstalk within any one of those distinct groups. In an example embodiment, effects of crosstalk within each of the distinct groups can be mitigated indirectly using an appropriate T/FDMA schedule, according to which, during a given symbol period, a given resource block of any of the distinct groups can carry data corresponding to a single respective subscriber. A precoder (postcoder) matrix for the digital signal vectoring can be generated using block-diagonalization techniques appropriately constrained, e.g., using the groups' definitions, aggregate-transmit-power restrictions, etc. In various embodiments, the disclosed digital signal vectoring can be used on the downlink or on the uplink, or both.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 4, 2021
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Paschalis Tsiaflakis, Carl Nuzman
  • Patent number: 10992341
    Abstract: A multi-line digital transceiver configured to use low-complexity beamforming on at least some tones to boost effective SNR values for selected subscriber lines. In an example embodiment, the beamforming coefficients can be restricted to one-bit values or two-bit values, e.g., such that the corresponding beamforming computations can be implemented using only sign changes, swaps of the real and imaginary parts, and/or zeroing of some values, and without invoking any full-precision hardware multiplication operations. At least some embodiments can be run on a significantly simpler and/or less powerful vectoring engine than conventional beamforming solutions while still being able to provide nearly optimal beamforming SNR gains. In some embodiments, additional scaling by powers of two may be applied to at least some signals contributing to the beamforming, e.g., to satisfy power constraints for some or all of the subscriber lines.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: April 27, 2021
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Paschalis Tsiaflakis, Jochen Maes, Werner Coomans, Carl Nuzman
  • Publication number: 20210083718
    Abstract: A multiport FDX data transceiver having (i) digital transmit and receive chains shared by the multiple ports thereof and (ii) a multi-stage echo-cancellation circuit capable of canceling the echo of the transmitted signal that is coupled back into the receive chain through the analog front end of the transceiver. In an example embodiment, the echo-cancellation circuit comprises two stages. The first stage operates to remove a dominant echo signal corresponding to the output signal that is being broadcast on the multiple ports of the transceiver. The second stage operates to remove a residual echo signal typically caused by differences in the pertinent characteristics of the circuits associated with the different ports of the transceiver. In some embodiments, the multi-stage echo-cancellation circuit can be used for training a single-stage echo-cancellation circuit that may be unable to sufficiently quickly converge on an optimal set of filter coefficients on its own.
    Type: Application
    Filed: November 2, 2020
    Publication date: March 18, 2021
    Applicant: VECIMA NETWORKS INC.
    Inventor: Carl Nuzman
  • Publication number: 20210006294
    Abstract: A vectoring controller for configuring a vectoring processor that jointly processes DMT communication signals to be transmitted over, or received from, a plurality of N subscriber lines according to a vectoring matrix. In accordance with an embodiment, the vectoring controller is configured, for given ones of a plurality of tones, to enable the given tone for direct data communication over a first set of N?Mk targeted lines out of the plurality of N subscriber lines, and to disable the given tone for direct data communication over a second disjoint set of Mk supporting lines out of the plurality of N subscriber lines, Mk denoting a non-null positive integer. The vectoring controller is further configured to configure the vectoring matrix to use an available transmit or receive power at the given tone over the second set of Mk supporting lines for further enhancement of data signal gains at the given tone over the first set of N?Mk targeted lines.
    Type: Application
    Filed: August 21, 2020
    Publication date: January 7, 2021
    Applicant: Alcatel Lucent
    Inventors: Paschalis TSIAFLAKIS, Carl NUZMAN, Jochen MAES
  • Publication number: 20200395979
    Abstract: A multi-line digital transceiver configured to use low-complexity beamforming on at least some tones to boost effective SNR values for selected subscriber lines. In an example embodiment, the beamforming coefficients can be restricted to one-bit values or two-bit values, e.g., such that the corresponding beamforming computations can be implemented using only sign changes, swaps of the real and imaginary parts, and/or zeroing of some values, and without invoking any full-precision hardware multiplication operations. At least some embodiments can be run on a significantly simpler and/or less powerful vectoring engine than conventional beamforming solutions while still being able to provide nearly optimal beamforming SNR gains. In some embodiments, additional scaling by powers of two may be applied to at least some signals contributing to the beamforming, e.g., to satisfy power constraints for some or all of the subscriber lines.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 17, 2020
    Applicant: Nokia Solutions and Networks OY
    Inventors: Paschalis Tsiaflakis, Jochen Maes, Werner Coomans, Carl Nuzman
  • Patent number: 10826560
    Abstract: A vectoring controller for configuring a vectoring processor that jointly processes DMT communication signals to be transmitted over, or received from, a plurality of N subscriber lines according to a vectoring matrix. In accordance with an embodiment, the vectoring controller is configured, for given ones of a plurality of tones, to enable the given tone for direct data communication over a first set of N?Mk targeted lines out of the plurality of N subscriber lines, and to disable the given tone for direct data communication over a second disjoint set of Mk supporting lines out of the plurality of N subscriber lines, Mk denoting a non-null positive integer. The vectoring controller is further configured to configure the vectoring matrix to use an available transmit or receive power at the given tone over the second set of Mk supporting lines for further enhancement of data signal gains at the given tone over the first set of N?Mk targeted lines.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: November 3, 2020
    Assignee: Nokia of America Corporation
    Inventors: Paschalis Tsiaflakis, Carl Nuzman, Jochen Maes
  • Patent number: 10826559
    Abstract: A multiport FDX data transceiver having (i) digital transmit and receive chains shared by the multiple ports thereof and (ii) a multi-stage echo-cancellation circuit capable of canceling the echo of the transmitted signal that is coupled back into the receive chain through the analog front end of the transceiver. In an example embodiment, the echo-cancellation circuit comprises two stages. The first stage operates to remove a dominant echo signal corresponding to the output signal that is being broadcast on the multiple ports of the transceiver. The second stage operates to remove a residual echo signal typically caused by differences in the pertinent characteristics of the circuits associated with the different ports of the transceiver. In some embodiments, the multi-stage echo-cancellation circuit can be used for training a single-stage echo-cancellation circuit that may be unable to sufficiently quickly converge on an optimal set of filter coefficients on its own.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: November 3, 2020
    Assignee: Nokia Solutions and Networks OY
    Inventor: Carl Nuzman
  • Publication number: 20200228161
    Abstract: A multi-line digital transceiver configured to use digital signal vectoring in a manner that causes effects of crosstalk between distinct groups of subscriber lines to be effectively mitigated, without directly attempting to mitigate effects of crosstalk within any one of those distinct groups. In an example embodiment, effects of crosstalk within each of the distinct groups can be mitigated indirectly using an appropriate T/FDMA schedule, according to which, during a given symbol period, a given resource block of any of the distinct groups can carry data corresponding to a single respective subscriber. A precoder (postcoder) matrix for the digital signal vectoring can be generated using block-diagonalization techniques appropriately constrained, e.g., using the groups' definitions, aggregate-transmit-power restrictions, etc. In various embodiments, the disclosed digital signal vectoring can be used on the downlink or on the uplink, or both.
    Type: Application
    Filed: January 14, 2019
    Publication date: July 16, 2020
    Applicant: Nokia Solutions and Networks OY
    Inventors: Paschalis Tsiaflakis, Carl Nuzman
  • Publication number: 20190378009
    Abstract: A method including, at a processor, obtaining an input to be classified, training a neural network, and classifying the input using the trained neural network. The training of the neural network being done in a feed-forward manner based on a plurality of sample inputs and sample classifications. Each of the sample classifications is associated with one of the plurality of sample inputs. The training includes, for each of a plurality of layers in the neural network, selecting values for a weight matrix, parameters for a plurality of activation unit functions, and a plurality of linear filter parameters. The classifying the input using the trained neural network is based on the weight matrix, the parameters for the plurality of activation unit functions, and the plurality of linear filter parameters for each of the plurality of layers.
    Type: Application
    Filed: June 12, 2018
    Publication date: December 12, 2019
    Applicant: Nokia Technologies OY
    Inventors: Carl NUZMAN, Shirin JALALI, lraj SANIEE
  • Publication number: 20190356353
    Abstract: A multiport FDX data transceiver having (i) digital transmit and receive chains shared by the multiple ports thereof and (ii) a multi-stage echo-cancellation circuit capable of canceling the echo of the transmitted signal that is coupled back into the receive chain through the analog front end of the transceiver. In an example embodiment, the echo-cancellation circuit comprises two stages. The first stage operates to remove a dominant echo signal corresponding to the output signal that is being broadcast on the multiple ports of the transceiver. The second stage operates to remove a residual echo signal typically caused by differences in the pertinent characteristics of the circuits associated with the different ports of the transceiver. In some embodiments, the multi-stage echo-cancellation circuit can be used for training a single-stage echo-cancellation circuit that may be unable to sufficiently quickly converge on an optimal set of filter coefficients on its own.
    Type: Application
    Filed: May 16, 2018
    Publication date: November 21, 2019
    Applicant: Nokia Solutions and Networks OY
    Inventor: Carl Nuzman
  • Publication number: 20190058502
    Abstract: A vectoring controller for configuring a vectoring processor that jointly processes DMT communication signals to be transmitted over, or received from, a plurality of N subscriber lines according to a vectoring matrix. In accordance with an embodiment, the vectoring controller is configured, for given ones of a plurality of tones, to enable the given tone for direct data communication over a first set of N?Mk targeted lines out of the plurality of N subscriber lines, and to disable the given tone for direct data communication over a second disjoint set of Mk supporting lines out of the plurality of N subscriber lines, Mk denoting a non-null positive integer. The vectoring controller is further configured to configure the vectoring matrix to use an available transmit or receive power at the given tone over the second set of Mk supporting lines for further enhancement of data signal gains at the given tone over the first set of N?Mk targeted lines.
    Type: Application
    Filed: October 3, 2016
    Publication date: February 21, 2019
    Applicant: Alcatel Lucent
    Inventors: Paschalis TSIAFLAKIS, Carl NUZMAN, Jochen MAES
  • Publication number: 20180115640
    Abstract: Embodiments relate to a method for determining a corrective operation for a monitored Digital Subscriber Line in a first vectoring group, executed by a monitoring device, including receiving measurement data representative of successive received signal qualities of the monitored Digital Subscriber Line at successive times, and of successive transmission activities of other Digital Subscriber Lines, wherein the other Digital Subscriber Lines include at least one first Digital Subscriber Line in said first vectoring group and at least one second Digital Subscriber Line in a second vectoring group, determining a corrective operation for the monitored Digital Subscriber Line in function of changes in the received signal qualities between times wherein the transmission activity of at least one of the other Digital Subscriber Lines changes.
    Type: Application
    Filed: May 17, 2016
    Publication date: April 26, 2018
    Applicant: Alcatel Lucent
    Inventors: Issam WAHIBI, Carl NUZMAN, Benoit DROOGHAAG
  • Patent number: 9917617
    Abstract: In accordance with an embodiment, the vectoring controller is configured to iterate through successive crosstalk acquisition cycles and, within respective ones of the crosstalk acquisition cycles, to configure sequences of crosstalk probing symbols for transmission over the respective communication lines, to receive sequences of error samples as successively measured by respective receivers coupled to the respective communication lines while the sequences of crosstalk probing symbols are being transmitted, and to determine crosstalk estimates between the respective communication lines based on the sequences of error samples. The vectoring controller is further configured to randomize the successive sequences of crosstalk probing symbols used during the successive crosstalk acquisition cycles, and to iteratively configure the vectoring processor based on the successive crosstalk estimates.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: March 13, 2018
    Assignee: Provenance Asset Group LLC
    Inventors: Dirk Vanderhaegen, Carl Nuzman, Danny Van Bruyssel
  • Patent number: 9722664
    Abstract: At least one crosstalk probing sequence out of a set of orthogonal crosstalk probing sequences is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples are successively measured by a receiver coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The received error samples are next correlated with at least one unassigned crosstalk probing sequence out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 1, 2017
    Assignee: Alcatel Lucent
    Inventors: Carl Nuzman, Dirk Vanderhaegen
  • Publication number: 20160191117
    Abstract: In accordance with an embodiment, the vectoring controller is configured to iterate through successive crosstalk acquisition cycles and, within respective ones of the crosstalk acquisition cycles, to configure sequences of crosstalk probing symbols for transmission over the respective communication lines, to receive sequences of error samples as successively measured by respective receivers coupled to the respective communication lines while the sequences of crosstalk probing symbols are being transmitted, and to determine crosstalk estimates between the respective communication lines based on the sequences of error samples. The vectoring controller is further configured to randomize the successive sequences of crosstalk probing symbols used during the successive crosstalk acquisition cycles, and to iteratively configure the vectoring processor based on the successive crosstalk estimates.
    Type: Application
    Filed: August 26, 2014
    Publication date: June 30, 2016
    Applicant: Alcatel Lucent
    Inventors: Dirk VANDERHAEGEN, Carl NUZMAN, Danny VAN BRUYSSEL
  • Patent number: 9379770
    Abstract: At least one example embodiment discloses a method of initializing a plurality of communication paths in a system. The method includes obtaining a first matrix from a storage medium, the first matrix including at least one channel sub-matrix of the system associated with a subset of the plurality of communication paths, obtaining an indication of which communication paths are to become active and determining, after the obtaining the indication, new compensation coefficients based on the at least one channel sub-matrix and active compensation coefficients, the active compensation coefficients for compensating for crosstalk between the active communication paths prior to the number of active communication paths changing.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 28, 2016
    Assignee: Alcatel Lucent
    Inventors: Carl Nuzman, Thomas J. G. Mermans, Dirk Vanderhaegen
  • Publication number: 20160156383
    Abstract: At least one crosstalk probing sequence out of a set of orthogonal crosstalk probing sequences is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples are successively measured by a receiver coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The received error samples are next correlated with at least one unassigned crosstalk probing sequence out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples.
    Type: Application
    Filed: July 31, 2014
    Publication date: June 2, 2016
    Applicant: Alcatel-Lucent
    Inventors: Carl NUZMAN, Dirk VANDERHAEGEN