Patents by Inventor Berthold Gustafsson Kjell

Berthold Gustafsson Kjell 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).

  • Method and apparatus for detecting a frequency synchronization signal
    Patent number: 6226336
    Abstract: In a communication system including at least one transmitter and at least one receiver, a frequency synchronization signal transmitted from the transmitter to the receiver is detected. An in-phase component of a signal received by the receiver is delayed, and the delayed in-phase component is multiplied by a quadrature component of the received signal. The steps of delaying and multiplying are repeated for a predetermined number of samples of the received signal to produce an estimated cross-correlation value. A determination is made whether the estimated cross-correlation value is at least as great as a predetermined threshold, indicating that the transmitted signal is a frequency synchronization signal.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: May 1, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Roozbeh Atarius, Berthold Gustafsson Kjell