Patents by Inventor Dean Jeffrey Sklar

Dean Jeffrey Sklar 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).

  • Turbo decoding system using NTH root metrics for non-Gaussian communication channels
    Patent number: 7127000
    Abstract: An nth root transformation is used for generating near Gaussian metrics from non-Gaussian metrics for input into a conventional turbo decoder that is based on the assumption that the input sequence to the decoder has a Gaussian distribution. The nth root transformation transforms channel non-Gaussian statistics to near Gaussian statistics for use with conventional turbo decoding for improved noncoherent communications over a non-Gaussian channel, such as a fading channel. For a differential coherent PSK waveform, where the channel statistics of a demodulator are non-Gaussian, for example, in the presence of fading, the nth root transformation is used to transform the non-Gaussian statistics to near Gaussian statistics for generating near Gaussian metrics, for improved PSK communications.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: October 24, 2006
    Assignee: The Aerospace Corporation
    Inventors: Charles Chiming Wang, Dean Jeffrey Sklar
  • Turbo decoding system using nth root metrics for non-gaussian communication channels
    Publication number: 20040076240
    Abstract: An nth root transformation is used for generating near Gaussian metrics from non-Gaussian metrics for input into a conventional turbo decoder that is based on the assumption that the input sequence to the decoder has a Gaussian distribution. The nth root transformation transforms channel non-Gaussian statistics to near Gaussian statistics for use with conventional turbo decoding for improved noncoherent communications over a non-Gaussian channel, such as a fading channel. For a differential coherent PSK waveform, where the channel statistics of a demodulator are non-Gaussian, for example, in the presence of fading, the nth root transformation is used to transform the non-Gaussian statistics to near Gaussian statistics for generating near Gaussian metrics, for improved PSK communications.
    Type: Application
    Filed: October 21, 2002
    Publication date: April 22, 2004
    Inventors: Charles Chiming Wang, Dean Jeffrey Sklar