Patents by Inventor Carrie E. Aust

Carrie E. Aust 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).

  • Dynamic measurement of communication channel characteristics using direct sequence spread spectrum (DSSS) systems, methods and program products
    Patent number: 7088766
    Abstract: A DSSS system determines transmission reliability of a communication channel in real time. A DSSS transmitter (f0=1/T) generates a Pseudo Noise (PN) code and modulates a carrier source [cos. (2??c)] with a selected chip rate. The transmitter bandwidth is a direct function of the chip rate. The PN coded carrier signal is further modulated by a data signal [m(t)] to provide an output signal [s(t)] to a correlator via a communication channel for purposes of determining the transmission characteristic of the channel. The correlator running a variable length pseudo noise code combines the code and the carrier which relates the incoming data signal to a correlation value for detecting the data signal. The correlation value is compared to a threshold value based upon experience of reliable transmission of data through the communication channel.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: August 8, 2006
    Assignee: International Business Machines Corporation
    Inventors: Carrie E. Aust, Hayden C. Cranford, Jr., Martin L. Schmatz
  • Dynamic measurement of communication channel characteristics using direct sequence spread spectrum (DSSS) systems, methods and program products
    Publication number: 20030112851
    Abstract: A DSSS system determines transmission reliability of a communication channel in real time. A DSSS transmitter (f0=1/T) generates a Pseudo Noise (PN) code and modulates a carrier source [cos. (2&Sgr;&ggr;c)] with a selected chip rate. The transmitter bandwidth is a direct function of the chip rate. The PN coded carrier signal is further modulated by a data signal [m(t)] to provide an output signal [s(t)] to a correlator via a communication channel for purposes of determining the transmission characteristic of the channel. The correlator running a variable length pseudo noise code combines the code and the carrier which relates the incoming data signal to a correlation value for detecting the data signal. The correlation value is compared to a threshold value based upon experience of reliable transmission of data through the communication channel.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Applicant: International Business Machines Corporation
    Inventors: Carrie E. Aust, Hayden C. Cranford, Martin L. Schmatz