Patents by Inventor George Kellam

George Kellam 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).

  • Non-binary viterbi decoder using butterfly operations
    Patent number: 6115436
    Abstract: A decoder for decoding a data signal using a non-binary trellis diagram by designating binary butterfly trellises within the non-binary trellis is disclosed. The decoder analyzes each designated binary butterfly trellis using the basic Viterbi binary butterfly operation to generate a pair of pathways to each node of the non-binary trellis. The pathways for each node from the basic binary butterfly operations are compared to determine the survivor path for that node.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: September 5, 2000
    Assignee: Ericsson Inc.
    Inventors: Rasaram Ramesh, George Kellam