Patents by Inventor Michael M. J. Carlsson

Michael M. J. Carlsson 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).

  • Simulated air interface system for simulating radio communication
    Patent number: 5465393
    Abstract: A simulated air interface system repeatedly simulates a constant but variable open air environment. In the system, a plurality of mobile stations are connected to at least one base station by cables. The system separates the radio path at each mobile station's antenna into an uplink path and a downlink path so that frequency modulation and signal reflections are not introduced into the system. The conditions of the simulated open air environment can be varied by introducing attenuation, doppler shifts, and signal fading into the system.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: November 7, 1995
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Tore Frostrom, Tomas J. Nilsson, Yngve Andersson, Michael M. J. Carlsson, Lars-Olof Sundell, Jonas P. Uden