Patents by Inventor Helena Deirdre O'Shea

Helena Deirdre O'Shea 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).

  • GMSK modulation techniques
    Patent number: 7065157
    Abstract: This disclosure is directed to digitally implemented GMSK modulation techniques. The digital GMSK modulation techniques make use of a lookup table (LUT) and mapping logic to digitally generate GMSK waveforms. The mapping logic can significantly reduce the size of the LUT, and thereby reduce memory requirements needed for effective digitally implemented GMSK modulation.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: June 20, 2006
    Assignee: Qualcomm Inc.
    Inventor: Helena Deirdre O'Shea
  • Method to efficiently generate the row and column index for half rate interleaver in GSM
    Patent number: 6987470
    Abstract: A method and apparatus for interleaving bits in a first sequence is disclosed. An exemplary method comprises storing a set of offset values in at least one table, applying in order each of the set of offset values to identify an adjacent bit pair in the first sequence of the bits for a new interleaved sequence of the bits and incrementing each of the set of offset values until an upper limit is reached to further identify additional adjacent bit pairs in the first sequence of the bits for the new interleaved sequence of the bits. The table is significantly shorter, requiring less memory than that used in a conventional interleaver, particularly a GSM interleaver for half rate speech.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: January 17, 2006
    Assignee: Qualcomm Incorporated
    Inventors: Helena Deirdre O'Shea, Ryan Milne
  • GMSK modulation techniques
    Publication number: 20040179630
    Abstract: This disclosure is directed to digitally implemented GMSK modulation techniques. The digital GMSK modulation techniques make use of a lookup table (LUT) and mapping logic to digitally generate GMSK waveforms. The mapping logic can significantly reduce the size of the LUT, and thereby reduce memory requirements needed for effective digitally implemented GMSK modulation.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 16, 2004
    Inventor: Helena Deirdre O'Shea