Patents by Inventor Denis Brandes

Denis Brandes 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).

  • Closed-loop antenna diversity in a cellular radio communication system
    Patent number: 7532866
    Abstract: A method is provided for operating a cellular radio communication system with a base station, which may be switched between an operating state without closed-loop antenna diversity and an operating state with closed-loop antenna diversity, emitting a downlink signal with a weighting vector and a user station, for receiving the downlink signal and transmitting an uplink signal to the base station, delivering back-coupling information to the base station in the operating state with closed-loop antenna diversity, representing a determined weighting vector.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: May 12, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Denis Brandes, Bernhard Raaf, Ralf Wiedmann
  • CLOSED-LOOP ANTENNA DIVERSITY IN A CELLULAR RADIO COMMUNICAITON SYSTEM
    Publication number: 20080009323
    Abstract: A method is provided for operating a cellular radio communication system with a base station, which may be switched between an operating state without closed-loop antenna diversity and an operating state with closed-loop antenna diversity, emitting a downlink signal with a weighting vector and a user station, for receiving the downlink signal and transmitting an uplink signal to the base station, delivering back-coupling information to the base station in the operating state with closed-loop antenna diversity, representing a determined weighting vector.
    Type: Application
    Filed: September 25, 2007
    Publication date: January 10, 2008
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Denis Brandes, Bernhard Raaf, Ralf Wiedmann
  • Closed-loop antenna diversity in a cellular radio communication system
    Patent number: 7289769
    Abstract: A method is provided for operating a cellular radio communication system with a base station, which may be switched between an operating state without closed-loop antenna diversity and an operating state with closed-loop antenna diversity, emitting a downlink signal with a weighting vector and a user station, for receiving the downlink signal and transmitting an uplink signal to the base station, delivering back-coupling information to the base station in the operating state with closed-loop antenna diversity, representing a determined weighting vector.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: October 30, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Denis Brandes, Bernhard Raaf, Ralf Wiedmann
  • Closed-Loop antenna diversity in a ceullular radio communication system
    Publication number: 20040157643
    Abstract: The invention relates to a method for operating a cellular radio communication system with a base station, which may be switched between an operating state without closed-loop antenna diversity and an operating state with closed-loop antenna diversity, emitting a downlink signal with a weighting vector and a user station, for receiving the downlink signal and transmitting an uplink signal to the base station, delivering back-coupling information to the base station in the operating state with closed-loop antenna diversity, representing a determined weighting vector.
    Type: Application
    Filed: November 17, 2003
    Publication date: August 12, 2004
    Inventors: Denis Brandes, Bernhard Raaf, Ralf Wiedmann