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:
Feb. 16, 1999
Filed:
Feb. 24, 1997
Applicant:
Inventor:
Steven E McMeekin, Woodinville, WA (US);
Assignee:
AT&T Wireless Services Inc., Kirkland, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K / ; H04L / ; H04L / ;
U.S. Cl.
CPC ...
375296 ; 375296 ; 375200 ; 375202 ; 375206 ; 375208 ; 370335 ; 370342 ; 370479 ;
Abstract
An RF communications technique pre-distorts the signal in the baseband prior to its being applied to the RF transmitter, to avoid producing harmonics when the resultant signal is processed by the RF transmitter. Pilot tones are used to test the channels between the base station and a remote station. The technique provides an improved way to minimize the harmonic distortion imposed by RF transmitters.