The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2007
Filed:
Oct. 23, 2002
Quadrature vestigial sideband digital communications method and system with correlated noise removal
John J. Poklemba, Ijamsville, MD (US);
Gregory S. Mitchell, Bethesda, MD (US);
Ronald F. Smith, Ashburn, VA (US);
John J. Poklemba, Ijamsville, MD (US);
Gregory S. Mitchell, Bethesda, MD (US);
Ronald F. Smith, Ashburn, VA (US);
The Aerospace Corporation, El Segundo, CA (US);
Abstract
A quadrature vestigial-sideband (QVSB) method and system with correlated noise removal are embodied in a QVSB receiver with a correlated-noise estimator-subtractor configured to obtain I/Q channel correlated noise estimates for receive-filtered I/Q signals in the QVSB receiver, and to subtract the I/Q channel correlated noise estimates from the receive-filtered I/Q signals to whiten noises entering a quadrature-crosstalk, maximum-likelihood-sequence-estimator (QC-MLSE) of the QVSB receiver.