Patents by Inventor Benoit Le Saux

Benoit Le Saux 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).

  • Transmission/reception methods and modules for a multiple-carrier multiple-antenna system using training sequences
    Patent number: 8290081
    Abstract: The present invention relates to a transmission method and device suitable for a system using Nt transmit antennas TXi and Nr receive antennas RXj. The symbols transmitted are inserted in a time-frequency frame that contains a training sequence. Each training sequence is constructed from replicas of a basic training sequence. At least one of the training sequences includes at least two replicas at least one of which is phase offset.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: October 16, 2012
    Assignee: France Telecom
    Inventors: Benoit Le Saux, Maryline Helard, Laurent Boher
  • Method and module for estimating transmission chanels of a multi-antenna multi-carrier system
    Patent number: 7945005
    Abstract: A method and a module for estimating transmission channels in a multi-antenna system. A matrix A is calculated which is constructed in the form of blocks from training sequences and an appropriate Fourier matrix. For a receive antenna RXj concerned, the method and the module calculate Nt impulse responses in the time domain by multiplying Np pilot symbols extracted from a frequency-domain signal Rj(n) obtained after demodulation of a time-domain signal received by the receive antenna RXj concerned by a product of matrices comprising the pseudo-inverse matrix of the product of the Hermitian matrix of the A matrix with the A matrix enabling decorrelation of modulated carriers adjacent null carriers.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: May 17, 2011
    Assignee: France Telecom
    Inventors: Benoit Le Saux, Maryline Helard, Xenophon Doukopoulos
  • TRANSMISSION/RECEPTION METHODS AND MODULES FOR A MULTIPLE-CARRIER MULTIPLE-ANTENNA SYSTEM USING TRAINING SEQUENCES
    Publication number: 20090304104
    Abstract: The present invention relates to a transmission method and device suitable for a system using Nt transmit antennas TXi and Nr receive antennas RXj. The symbols transmitted are inserted in a time-frequency frame that contains a training sequence. Each training sequence is constructed from replicas of a basic training sequence. At least one of the training sequences includes at least two replicas at least one of which is phase offset.
    Type: Application
    Filed: November 19, 2007
    Publication date: December 10, 2009
    Applicant: France Telecom
    Inventors: Benoit Le Saux, Maryline Helard, Laurent Boher
  • Method and module for estimating transmission chanels of a multi-antenna multi-carrier system
    Publication number: 20080062859
    Abstract: A method and a module for estimating transmission channels in a multi-antenna system. A matrix A is calculated which is constructed in the form of blocks from training sequences and an appropriate Fourier matrix. For a receive antenna RXj concerned, the method and the module calculate Nt impulse responses in the time domain by multiplying Np pilot symbols extracted from a frequency-domain signal Rj(n) obtained after demodulation of a time-domain signal received by the receive antenna RXj concerned by a product of matrices comprising the pseudo-inverse matrix of the product of the Hermitian matrix of the A matrix with the A matrix enabling decorrelation of modulated carriers adjacent null carriers.
    Type: Application
    Filed: September 10, 2007
    Publication date: March 13, 2008
    Applicant: France Telecom
    Inventors: Benoit Le Saux, Maryline Helard, Xenophon Doukopoulos