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:
Jul. 21, 1998
Filed:
Oct. 04, 1996
Applicant:
Inventors:
Christopher P LaRosa, Lake Zurich, IL (US);
Tracie A Schirtzinger, Libertyville, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
378350 ; 36472419 ;
Abstract
A digital filter (200) suitable for use in a CDMA or other burst-mode communication device (100) employs precombining of filter coefficients to reduce filter complexity and power dissipation. The digital filter (200) includes a coefficient storage circuit (216) for storing the precombined coefficients, a selection circuit (212) for selecting appropriate precombined coefficients in response to the input signal and a combining circuit (214) for combining the appropriate precombined coefficients to produce a filtered signal.