Patents by Inventor Youssef Nasser

Youssef Nasser 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).

  • Peak-to-average power ratio reduction in a multi-carrier signal
    Patent number: 10361897
    Abstract: A method of transmitting a multi-carrier source signal, including symbols constituted by reserved carriers and data carriers. The method includes generating an additional signal that reduces peak-to-average power ratio of the signal to be transmitted. For each symbol, the method obtains M time samples representing the symbols and/or at least one iteration of: detecting P time samples from among P time samples representing the symbol, the P samples being the P samples of the highest amplitude among the M samples, or the P samples presenting a power value above a threshold; in the frequency domain, activating a reserved carrier, by addition of a pre-determined power to the reserved carrier; and for each activated reserved carrier: obtaining M time samples representing the activated reserved carrier, and applying a phase shift, taking account of the P detected samples, to the M time samples representing the activated reserved carrier.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: July 23, 2019
    Assignees: INSTITUT NATIONAL DES SCIENCES APPLIQUEES, AMERICAN UNIVERSITY OF BEIRUT
    Inventors: Ralph Mounzer, Matthieu Crussiere, Jean-Francois Helard, Youssef Nasser
  • PEAK-TO-AVERAGE POWER RATIO REDUCTION IN A MULTI-CARRIER SIGNAL
    Publication number: 20180123851
    Abstract: A method of transmitting a multi-carrier source signal, including symbols constituted by reserved carriers and data carriers. The method includes generating an additional signal that reduces peak-to-average power ratio of the signal to be transmitted. For each symbol, the method obtains M time samples representing the symbols and/or at least one iteration of: detecting P time samples from among P time samples representing the symbol, the P samples being the P samples of the highest amplitude among the M samples, or the P samples presenting a power value above a threshold; in the frequency domain, activating a reserved carrier, by addition of a pre-determined power to the reserved carrier; and for each activated reserved carrier: obtaining M time samples representing the activated reserved carrier, and applying a phase shift, taking account of the P detected samples, to the M time samples representing the activated reserved carrier.
    Type: Application
    Filed: May 3, 2016
    Publication date: May 3, 2018
    Inventors: Ralph Mounzer, Matthieu Crussiere, Jean-Francois Helard, Youssef Nasser
  • Estimation of a signal-to-interference plus noise ratio at the output of an OFDM CDMA receiver
    Patent number: 7751468
    Abstract: A method of estimating an SINR ratio of an OFDM-CDMA transmission signal spread with spread codes, the transmission signal being transmitted between a transmission apparatus and a receiver apparatus, the method including: receiving the signal spread with spread codes at the receiver apparatus; and calculating, with a processor at the receiver apparatus, an estimate of the SINR ratio for the signal spread with the spread codes independently of a value of the spread codes.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: July 6, 2010
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Mathieu Des Noes, Dimitri Ktenas, Luc Maret, Youssef Nasser
  • Estimation of a Signal-to-Interference Plus Noise Ratio at the Output of an Ofdm Cdma Receiver
    Publication number: 20070258510
    Abstract: This invention relates to a method of estimating the SINR ratio of an OFDM-CDMA type transmission using spread codes (ck), in which this ratio is estimated independently of the value of these codes.
    Type: Application
    Filed: September 19, 2005
    Publication date: November 8, 2007
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Mathieu Des Noes, Dimitri Ktenas, Luc Maret, Youssef Nasser