Patents by Inventor Ludovic Chandesris

Ludovic Chandesris 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 for decoding a polar code with inversion of unreliable bits
    Patent number: 10742239
    Abstract: A polar code decoding method in which a first decoding attempt by successive cancellation is performed and in the case where the decoded frame is erroneous, an ordered list of bit positions to be tested in the frame is generated, the order relation being given by a metric of first error, the value of this metric depending on the reliability of the decision about the bit as well as on the reliability of the decisions about the bits preceding it in the frame. For each of the positions of the list, an inversion of the bit and a decoding of the subsequent bits are undertaken, doing so as long as the list has not been exhausted or the frame has not been decoded without error. In case of failure, a new decoding attempt based on a double-inversion of bits can be envisaged.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 11, 2020
    Assignees: COMMISSARIAT ÀL'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, CY CERGY PARIS UNIVERSITÉ, ECOLE NATIONALE SUPERIEURE DE L'ELECRONIQUE ET DE SES APPLICATIONS (ENSEA)
    Inventors: Ludovic Chandesris, David Declercq, Valentin Savin
  • METHOD FOR DECODING A POLAR CODE WITH INVERSION OF UNRELIABLE BITS
    Publication number: 20190132011
    Abstract: A polar code decoding method in which a first decoding attempt by successive cancellation is performed and in the case where the decoded frame is erroneous, an ordered list of bit positions to be tested in the frame is generated, the order relation being given by a metric of first error, the value of this metric depending on the reliability of the decision about the bit as well as on the reliability of the decisions about the bits preceding it in the frame. For each of the positions of the list, an inversion of the bit and a decoding of the subsequent bits are undertaken, doing so as long as the list has not been exhausted or the frame has not been decoded without error. In case of failure, a new decoding attempt based on a double-inversion of bits can be envisaged.
    Type: Application
    Filed: April 12, 2017
    Publication date: May 2, 2019
    Inventors: Ludovic Chandesris, David Declercq, Valentin Savin