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:
Aug. 25, 1998
Filed:
Sep. 27, 1996
Applicant:
Inventors:
Christopher H Strolle, Montgomery, PA (US);
Steven T Jaffe, Monmouth, NJ (US);
Assignee:
David Sarnoff Research Center Inc., Princeton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H04L / ;
U.S. Cl.
CPC ...
375233 ; 375326 ;
Abstract
A receiver for demodulating multiple digital modulation formats including vestigial sideband (VSB), quadrature amplitude modulation (QAM), and offset QAM (OQAM). The receiver includes a timing recovery circuit that produces accurate timing information for each modulation format and a signal processor for adaptive equalization and quantization of each modulation format. The adaptive equalizer is a passband equalizer that performs blind equalization using a feed forward equalizer and a decision feedback equalizer.