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:
Jan. 27, 1987
Filed:
Feb. 19, 1985
Applicant:
Inventors:
Botaro Hirosaki, Tokyo, JP;
Osamu Tanaka, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H03L / ;
U.S. Cl.
CPC ...
375118 ; 307511 ; 328162 ; 328155 ;
Abstract
The apparatus includes circuits for detecting sequential carrier phases of a complex baseband signal and storing the detected carrier phases. A phase predictor is responsive to the detected carrier phases for producing a predicted carrier phase. A circuit is also provided for compensating for a carrier phase deviation of the complex baseband signal in response to the predicted phase. An error detector detects an error associated with data discriminated from the complex baseband signal and a controller controls the phase predictor to minimize the error.