Patents by Inventor Alex Tolmachev

Alex Tolmachev 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).

  • Transmitter, receiver and a method for digital multiple sub-band processing
    Patent number: 10931486
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 23, 2021
    Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.
    Inventors: Moshe Nazarathy, Alex Tolmachev
  • Transmitter, receiver and a method for digital multiple sub-band processing
    Patent number: 10700897
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 30, 2020
    Assignee: Technion Research and Development Foundation Ltd
    Inventors: Moshe Nazarathy, Alex Tolmachev
  • TRANSMITTER, RECEIVER AND A METHOD FOR DIGITAL MULTIPLE SUB-BAND PROCESSING
    Publication number: 20200092146
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 19, 2020
    Inventors: Moshe Nazarathy, Alex Tolmachev
  • Self-coherent robust spectrally efficient optical transmission systems
    Publication number: 20180069638
    Abstract: Coherent reconstruction of dual polarized data and pilot signals without local oscillator or laser.
    Type: Application
    Filed: August 14, 2017
    Publication date: March 8, 2018
    Inventors: Moshe Nazarathy, Amos Agmon, Alex Tolmachev
  • Self-coherent robust spectrally efficient optical transmission systems
    Patent number: 9735886
    Abstract: Coherent reconstruction of dual polarized data and pilot signals without local oscillator or laser.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: August 15, 2017
    Assignee: Technion Research and Development Foundation Ltd.
    Inventors: Moshe Nazarathy, Amos Agmon, Alex Tolmachev
  • TRANSMITTER, RECEIVER AND A METHOD FOR DIGITAL MULTIPLE SUB-BAND PROCESSING
    Publication number: 20170214558
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Application
    Filed: November 22, 2016
    Publication date: July 27, 2017
    Inventors: MOSHE NAZARATHY, Alex Tolmachev
  • Receiver, transmitter and a method for digital multiple sub-band processing
    Patent number: 9503284
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Grant
    Filed: June 10, 2012
    Date of Patent: November 22, 2016
    Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.
    Inventors: Moshe Nazarathy, Alex Tolmachev
  • Self-coherent robust spectrally efficient optical transmission systems
    Publication number: 20160065314
    Abstract: Coherent reconstruction of dual polarized data and pilot signals without local oscillator or laser.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 3, 2016
    Inventors: Moshe Nazarathy, Amos Agmon, Alex Tolmachev
  • Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission
    Patent number: 9059889
    Abstract: A method for calculating a reconstructed phase that includes: Calculating a current phase signal and current amplitude signal that represent a phase and amplitude of a current input symbol, respectively. Generating, in response to the current phase signal and an estimate of a phase of a last input symbol that preceded the current input symbol, multiple partial references, some of which are responsive to (i) phase signals representative of phases of a plurality of input symbols that preceded the current input symbol, and (ii) estimates of the phase of the plurality of input symbols. Calculating unwrapped partial references. Estimating a constant carrier frequency offset (CFO) phase rotation in response to the unwrapped partial references. Calculating a reconstructed phase of the current input symbol in response to, at least, the estimate of the constant CFO phase rotation and to the unwrapped partial references.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: June 16, 2015
    Assignee: TECHNION RESEARCH AND DEVELOPMENT FOUNDATION LTD.
    Inventors: Moshe Nazarathy, Igor Tselniker, Alex Tolmachev
  • POLAR MULTI-SYMBOL DELAY DETECTOR FOR CARRIER PHASE AND FREQUENCY RECOVERY FOR COHERENT TRANSMISSION
    Publication number: 20140254723
    Abstract: A method for calculating a reconstructed phase that includes: Calculating a current phase signal and current amplitude signal that represent a phase and amplitude of a current input symbol, respectively. Generating, in response to the current phase signal and an estimate of a phase of a last input symbol that preceded the current input symbol, multiple partial references, some of which are responsive to (i) phase signals representative of phases of a plurality of input symbols that preceded the current input symbol, and (ii) estimates of the phase of the plurality of input symbols. Calculating unwrapped partial references. Estimating a constant carrier frequency offset (CFO) phase rotation in response to the unwrapped partial references. Calculating a reconstructed phase of the current input symbol in response to, at least, the estimate of the constant CFO phase rotation and to the unwrapped partial references.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 11, 2014
    Applicant: Technion Research and Development Foundation LTD.
    Inventors: Moshe Nazarathy, Igor Tselniker, Alex Tolmachev
  • RECEIVER, TRANSMITTER AND A METHOD FOR DIGITAL MULTIPLE SUB-BAND PROCESSING
    Publication number: 20140169501
    Abstract: Highly efficient digital domain sub-band based receivers and transmitters.
    Type: Application
    Filed: June 10, 2012
    Publication date: June 19, 2014
    Inventors: Moshe Nazarathy, Alex Tolmachev