Patents by Inventor Derek Stephen Hilborn

Derek Stephen Hilborn 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).

  • Publication number: 20160286425
    Abstract: Wireless network performance may be improved by combined phase and power coordinated scheduling, usage-aware interference mitigation scheduling, estimating interference in a power scheduled network, coordinating transmission power levels using thresholds, and locally generated pseudorandom power schedules.
    Type: Application
    Filed: March 23, 2016
    Publication date: September 29, 2016
    Inventors: Eamonn GORMLEY, David James RYAN, Derek Stephen HILBORN, Jeffrey Paul HARRANG, Adrian YIP
  • Patent number: 6111910
    Abstract: A maximal correlation symbol estimation (MCSE) method for estimating the symbols that are modulating an information signal component of a received signal, which can be applied to received signals that additionally contain an interference signal component, is disclosed. The method is achieved by correlating the received signal with all possible reference signals, each reference signal being one of a closed set of all possible information signals recognized by the given digital modulation scheme, and selecting as an estimate of the information signal the reference signal whose correlation with the received signal most closely resembles a weighted average of correlations between previously estimated information signals and their corresponding received signals. Demodulators that implement this method are adapted to perform many functions, including the estimation of symbols modulating frequency modulated (FM) received signals prior to the signals being FM demodulated.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: August 29, 2000
    Assignee: Nortel Networks Corporation
    Inventors: Jian Cui, Derek Stephen Hilborn
  • Patent number: 5732333
    Abstract: A linear transmitter (101) using predistortion includes a modulator (103), a predistorter (107), a digital quadrature modulator (111), an upconverter (113), a power amplifier (115), and an antenna (117). In addition, the transmitter (101) has a feedback loop including a coupler (119), a downconverter (123), a digital quadrature demodulator (125), and a trainer (131). The digital data to be transmitted is provided into the modulator (103), which converts the digital data into in-phase and quadrature component signals. The in-phase and quadrature component signals are then provided to the predistorter (107), which "predistorts" the component signals prior to amplification. The digital quadrature modulator (111) converts the component signals into a single analog signal. The upconverter (113) upconverts this signal from the predistorter (107) into the desired frequency of transmission, which is provided to the power amplifier (115) and the antenna (117) for amplification and broadcast.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: March 24, 1998
    Assignee: Glenayre Electronics, Inc.
    Inventors: Charles Brian Cox, David Kent Bonds, Jay Jui-Chieh Chen, Flaviu C. Costescu, Joel Richard Dierks, Wayne Douglas Duello, Thomas L. Frederick, Paul A. Goud, Derek Stephen Hilborn, Richard Johnathan Hinkle, Terry Lee Hinkle, David E. Jones, Theron Lee Jones, Patricia Fern Kavanagh, David W. Kroeger, Robert Richard Leyendecker, Vladimir Pavlovic, Claudio Gustavo Rey, Ray M.R. Sewlochan, Emre Tapucu, Mark A. Walker