Patents by Inventor Marc Marie Ghislain Durvaux

Marc Marie Ghislain Durvaux 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).

  • Patent number: 6744824
    Abstract: A multiple access method for use in a point to multipoint communications network includes a step of allocating a respective unique variable (&rgr;1, . . . , &rgr;i, . . .
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: June 1, 2004
    Assignee: Alcatel
    Inventors: Patrick Duvaut, Thierry Jesupret, Marc Marie Ghislain Durvaux
  • Patent number: 5703910
    Abstract: The present receiver includes a radiofrequency part (RF) coupled to a limiting amplifier (SL) which is in turn coupled to a demodulation means (DM) which recovers a digital signal from a received signal obtained by modulating a carrier signal with this digital signal. The limiting amplifier (SL) has an input-output characteristic which is substantially linear for smaller input signals and which strives with a decreasing gain towards a limit value for larger input signals. Due to this input-output characteristic smaller received signals are treated linearly up to the demodulation means (DM). The latter can therefore for these signals compensate for a specific spectrum shaping of the digital signal performed before the actual modulation. In this way the receiver will perform in a nearly optimal way resulting in low bit error rates. For larger received signals the limiting amplifier (SL) is non-linear and such compensation is consequently without effect resulting for these signals in a performance degradation.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: December 30, 1997
    Assignee: Alcatel N.V.
    Inventors: Marc Marie Ghislain Durvaux, Raphael Paul Claude Cassiers