Patents by Inventor Charles A. Simmons, JR.

Charles A. Simmons, JR. 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).

  • Method and apparatus for radio synchronization detection in a rake receiver
    Patent number: 8964815
    Abstract: Enhanced reception in a communication system is achieved by performing radio synchronization (SYNC) detection after multipath signal components are combined via a Rake combiner. In a communication system comprising a transmitter and a receiver, plural multipath signal components of a signal transmitted by the transmitter are received by the receiver. The plural multipath signal components are correlated with a known spreading code (e.g. a PN code). The correlated multipath signals are analyzed to identify plural correlation peaks and those correlation peaks that exceed a multipath threshold are selected. The selected correlation peaks are combined (i.e., coherently combined) to produce a combined signal. A synchronization event is declared when the combined signal exceeds an adjusted synchronization threshold and the combined signal is then decoded.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 24, 2015
    Assignee: Exelis Inc.
    Inventors: Qun Shi, Jonathan E. Rose, Ning Hsing Lu, Charles A. Simmons, Jr.
  • Method and Apparatus for Radio Synchronization Detection in a Rake Receiver
    Publication number: 20130182748
    Abstract: Enhanced reception in a communication system is achieved by performing radio synchronization (SYNC) detection after multipath signal components are combined via a Rake combiner. In a communication system comprising a transmitter and a receiver, plural multipath signal components of a signal transmitted by the transmitter are received by the receiver. The plural multipath signal components are correlated with a known spreading code (e.g. a PN code). The correlated multipath signals are analyzed to identify plural correlation peaks and those correlation peaks that exceed a multipath threshold are selected. The selected correlation peaks are combined (i.e., coherently combined) to produce a combined signal. A synchronization event is declared when the combined signal exceeds an adjusted synchronization threshold and the combined signal is then decoded.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: EXELIS INC.
    Inventors: Qun Shi, Jonathan E. Rose, Ning Hsing Lu, Charles A. Simmons, JR.