Patents by Inventor Paul H. Moose

Paul H. Moose 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).

  • Frequency/timing recovery circuit for orthogonal frequency division multiplexed signals
    Patent number: 6459745
    Abstract: An OFDM frequency/timing recovery circuit provides accurate recovery of both sub-carrier frequency and symbol timing information from a single OFDM symbol. Accuracy may be further enhanced in demanding applications by utilizing two OFDM symbols. A unique frequency/timing recovery symbol is used that is an OFDM symbol.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: October 1, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Paul H. Moose, Michael J. Geile, Richard C. North
  • Synchronization, channel estimation and pilot tone tracking system
    Publication number: 20020065047
    Abstract: The invention provides for a method and system for properly tracking, synchronizing and demodulating received packets at a receiver in order to decode data and other informational symbols transmitted by a transmitter. The invention further provides for a method and system for correcting for distortion, phase shift, and frequency offset at a receiver due to variations in the frequencies transmitted by a transmitter. The system and method disclosed herein and employed for acquisition and initial synchronization is effectively immune to channel impairments, such as multi-path.
    Type: Application
    Filed: September 18, 2001
    Publication date: May 30, 2002
    Inventor: Paul H. Moose
  • Echo cancellation in multi-frequency differentially encoded digital communications
    Patent number: 5166924
    Abstract: A differentially encoded digital signal waveform is generated as a discrete time representation of a desired analog signal utilizing multi-frequency modulation techniques. The computational capability of present day, industry-standard microcomputers equipped with a floating point array processor or digital signal processor chip is utilized to perform digital frequency encoding and compute both discrete Fourier transforms and inverse discrete Fourier transforms to provide a transmitter and receiver system utilizing suitably programmed microcomputers coupled by a communications channel.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: November 24, 1992
    Assignee: Mercury Digital Communications, Inc.
    Inventor: Paul H. Moose
  • Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels
    Patent number: 5063574
    Abstract: A differentially encoded digital signal waveform is generated as a discrete time representation of a desired analog signal utilizing multi-frequency modulation techniques. The computational capability of present day, industry-standard microcomputers equipped with a floating point array processor or digital signal processor chip is utilized to perform digital frequency encoding and compute both discrete Fourier transforms and inverse discrete Fourier transforms to provide a transmitter and receiver system utilizing suitably programmed microcomputers coupled by a communications channel.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: November 5, 1991
    Inventor: Paul H. Moose