Patents Represented by Law Firm Hamilton, Brook, Smith et al.
  • Adaptive echo cancellation and equalization system signal processor and method therefor
    Patent number: 4760596
    Abstract: A concurrent echo cancellation and channel equalization signal processor for hybrid full duplex communication, including a decision device and three transversal adaptive filters, in which the gain coefficients of the three transversal filters are adjusted in accordance with a fast Kalman algorithm to minimize the error between the estimated far end signal after it has passed through a hybrid (produced by summing the filter outputs) and the estimated received far end signal (produced by the decision device).
    Type: Grant
    Filed: February 25, 1986
    Date of Patent: July 26, 1988
    Assignee: GTE Laboratories Incorporated
    Inventors: Jagannath P. Agrawal, Norman E. Heckman