Patents by Inventor Ian Raphagen

Ian Raphagen 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).

  • Publication number: 20040146094
    Abstract: A method and apparatus for recovering information from a spread spectrum information signal included within a composite signal received from a signal propagation medium are disclosed herein. The method includes correlating time-offset versions of the composite signal with a spreading sequence in order to produce a plurality of correlation signals. The method further includes generating weighting factors based upon multipath channel gain characteristics so as to maximize a signal to interference plus noise ratio (SINR) of an estimate of the information. A plurality of weighted symbol streams are generated by processing the plurality of correlation signals in accordance with the weighting factors. The estimate of the information is then produced by combining the plurality of weighted symbol streams.
    Type: Application
    Filed: November 5, 2003
    Publication date: July 29, 2004
    Inventors: Ning Kong, Ian Raphagen, Michiel Lotter