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:
Mar. 29, 1994
Filed:
Dec. 19, 1991
Applicant:
Inventors:
Franco Guglielmi, Milan, IT;
Arnaldo Spalvieri, Senigallia, IT;
Assignee:
Alcatel Italia SpA, Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 97 ; 375 83 ; 329306 ;
Abstract
A method of estimating the carrier frequency of a numeric signal, in which two estimates of the carrier phase are carried out in successive instants of time and the estimated carrier frequency is obtained from the comparison of the above two estimates. The invention also concerns a device for implementing the method, the device including a circuit for estimating the phase of the signal at successive instants in time, a circuit for storing the estimates, and a circuit for comparing the estimates. In a preferred embodiment, both the phase estimator and the comparison circuit are implemented by multipliers and adders.