Patents by Inventor Rene Janicek

Rene Janicek 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).

  • Method and apparatus for nonlinear compensation in coherent optical links
    Patent number: 10903912
    Abstract: The disclosed structures and methods are directed to a method for compensation of linear and nonlinear effects in optical fiber of a coherent optical signal transmitted through an optical link. The method comprises receiving a coherent optical signal having carriers; determining values of intensity vectors for each carrier; determining values of filtered intensity vectors for each carrier by filtering the values of the intensity vectors at frequencies lower than a cut-off frequency of a filter; determining nonlinear compensation coefficients for each carrier based on the filtered intensity vectors; and modifying the digital coherent optical signal based on the nonlinear compensation coefficients.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: January 26, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Rene Janicek, Jeebak Mitra
  • METHOD AND APPARATUS FOR NONLINEAR COMPENSATION IN COHERENT OPTICAL LINKS
    Publication number: 20200366380
    Abstract: The disclosed structures and methods are directed to a method for compensation of linear and nonlinear effects in optical fiber of a coherent optical signal transmitted through an optical link. The method comprises receiving a coherent optical signal having carriers; determining values of intensity vectors for each carrier; determining values of filtered intensity vectors for each carrier by filtering the values of the intensity vectors at frequencies lower than a cut-off frequency of a filter; determining nonlinear compensation coefficients for each carrier based on the filtered intensity vectors; and modifying the digital coherent optical signal based on the nonlinear compensation coefficients.
    Type: Application
    Filed: May 12, 2020
    Publication date: November 19, 2020
    Inventors: Rene JANICEK, Jeebak MITRA
  • Synchronizing method and apparatus
    Patent number: 7352778
    Abstract: A method and apparatus is disclosed for performing a synchronization of an incoming series of complex samples of an incoming signal with a known sequence of a plurality of coefficients which represents a pattern within the incoming signal, known to the synchronizer, where the synchronization is performed using a plurality of cross-correlations units.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: April 1, 2008
    Assignee: Wavesat Wireless Inc.
    Inventors: Jonathan F. Labs, Greg Beaton, Erick Delage, René Janicek, Jean-François Lacasse, Rainer Ullmann
  • Synchronizing method and apparatus
    Publication number: 20040264510
    Abstract: A method and apparatus is disclosed for performing a synchronization of an incoming series of complex samples of an incoming signal with a known sequence of a plurality of coefficients which represents a pattern within the incoming signal, known to the synchronizer, where the synchronization is performed using a plurality of cross-correlations units.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Inventors: Jonathan F. Labs, Erick Delage, Rene Janicek, Jean-Francois Lacasse, Rainer Ullmann