Patents by Inventor Carole Devlin

Carole Devlin 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).

  • Peak-to-average-power reduction of OFDM signals
    Patent number: 7949059
    Abstract: A method of processing an Orthogonal Frequency-Division Multiplex (OFDM) signal having a plurality of data carriers and a plurality of unused carriers is disclosed. The method comprises transforming an original frequency-domain OFDM signal into a time domain signal and simulating the effect of a non-linear amplifier on the time-domain signal to provide a potentially distorted time domain signal. The potentially distorted time domain signal is transformed into a potentially distorted frequency domain signal and at least some of any values of the data carriers in the potentially distorted frequency domain signal are restored with corresponding values from the original frequency domain signal. At least some of the unused carriers in the at least partially restored frequency domain signal are scaled with a scaling factor.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: May 24, 2011
    Assignee: University College Dublin, National University of Ireland, Dublin
    Inventors: Carole Devlin, Anding Zhu, Thomas Brazil
  • Peak-to-average-power reduction of OFDM signals
    Publication number: 20080112496
    Abstract: A method of processing an Orthogonal Frequency-Division Multiplex (OFDM) signal having a plurality of data carriers and a plurality of unused carriers is disclosed. The method comprises transforming an original frequency-domain OFDM signal into a time domain signal and simulating the effect of a non-linear amplifier on the time-domain signal to provide a potentially distorted time domain signal. The potentially distorted time domain signal is transformed into a potentially distorted frequency domain signal and at least some of any values of the data carriers in the potentially distorted frequency domain signal are restored with corresponding values from the original frequency domain signal. At least some of the unused carriers in the at least partially restored frequency domain signal are scaled with a scaling factor.
    Type: Application
    Filed: November 7, 2007
    Publication date: May 15, 2008
    Applicant: UNIVERSITY COLLEGE DUBLIN, NATIONAL UNIVERSITY OF IRELAND, DUBLIN
    Inventors: Carole Devlin, Anding Zhu, Thomas Brazil