Patents by Inventor Albert M. Chan

Albert M. Chan 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).

  • Decoding of Walsh codes
    Patent number: 7580451
    Abstract: Methods, systems, devices, and computer program products for decoding of Walsh codewords are disclosed.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: August 25, 2009
    Assignee: Vanu, Inc.
    Inventors: Albert M. Chan, Jon Feldman, Raghavendra Madyastha, Piotr Indyk, David Karger
  • Decoding of walsh codes
    Publication number: 20080037615
    Abstract: Methods, systems, devices, and computer program products for decoding of Walsh codewords are disclosed.
    Type: Application
    Filed: October 5, 2006
    Publication date: February 14, 2008
    Inventors: Albert M. Chan, Jon Feldman, Raghavendra Madyastha, Piotr Indyk, David Karger
  • Block-iterative equalizers for digital communication system
    Patent number: 7292661
    Abstract: A block-iterative equalizer is adapted for use in contemporary digital communication system receivers. In a preferred embodiment, data received over a communication channel is processed by a linear feed-forward filter and the resulting filtered signal is provided to a slicer which makes a first set of tentative symbol decisions. During later iterations, the same received data is processed by the linear feed-forward filter, the feed-forward filter parameters being modified at each iteration based on the received data and the tentative decisions are themselves filtered by a second, “feed-back” filter and used to improve the tentative decisions.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: November 6, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Albert M. Chan, Gregory W. Wornell