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:
Oct. 17, 2000
Filed:
Dec. 16, 1997
Applicant:
Inventors:
Gregory E Bottomley, Cary, NC (US);
Raymond L Toy, Cary, NC (US);
Sandeep Chennakeshu, Cary, NC (US);
Karl J Molnar, Cary, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
375130 ; 375150 ; 375152 ; 375355 ; 370335 ;
Abstract
Systems and methods for frequency acquisition and channel tracking in a direct sequence code division multiple access system are described. Frequency estimates are prepared and refined, which estimates are also used in the channel tracking process.