Patents by Inventor Craig F. Valenti

Craig F. Valenti 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).

  • Crosstalk identification for spectrum management in broadband telecommunications systems
    Patent number: 6999583
    Abstract: Crosstalk between subscriber loops used to transmit different broadband services through the same bundled telephone cable is a significant limitation to providing digital subscriber line services. A method for estimating the crosstalk, identifying the sources of the crosstalk and predicting additional sources of crosstalk are disclosed. The crosstalk sources are identified in the frequency domain by maximizing the correlation with a “basis set” of received crosstalk PSDs which consist of the cascade of a finite set of known transmit PSDs types times a representative set of crosstalk couplings. Multiple crosstalk types are identified with a technique of successive spectral subtraction. This information can be used to perform crosstalk cancellation and spectrum management for DSL systems.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: February 14, 2006
    Assignee: Telcordia Technologies, Inc.
    Inventors: Craig F. Valenti, Kenneth Kerpez
  • Crosstalk identification for spectrum management in broadband telecommunications systems
    Publication number: 20020041565
    Abstract: Crosstalk between subscriber loops used to transmit different broadband services through the same bundled telephone cable is a significant limitation to providing digital subscriber line services. A method for estimating the crosstalk, identifying the sources of the crosstalk and predicting additional sources of crosstalk are disclosed. The crosstalk sources are identified in the frequency domain by maximizing the correlation with a “basis set” of received crosstalk PSDs which consist of the cascade of a finite set of known transmit PSDs types times a representative set of crosstalk couplings. Multiple crosstalk types are identified with a technique of successive spectral subtraction. This information can be used to perform crosstalk cancellation and spectrum management for DSL systems.
    Type: Application
    Filed: August 3, 2001
    Publication date: April 11, 2002
    Inventors: Craig F. Valenti, Kenneth Kerpez