Patents by Inventor Shawn E. Preston

Shawn E. Preston 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).

  • System and method for transmitting highly correlated preambles in QAM constellations
    Publication number: 20040001448
    Abstract: A method for transmitting a data signal where the data signal includes a preamble portion preceding a payload portion that reduces harmonic spikes is presented. The method reduces the transmission power for portions of bursty data signal that contain highly correlated or repetitive preamble sequences relative to the transmission power that contain non-highly correlated or repetitive payload sequences. The resultant average output power of the preamble sequences is approximately equal to the average output power of the payload sequences.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Inventors: Shawn E. Preston, Guy Lopez, David C. Schafer