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. 10, 2007
Filed:
Sep. 21, 2004
Thomas P. Krauss, Algonquin, IL (US);
Kevin L. Baum, Rolling Meadows, IL (US);
Vijay Nangia, Algonquin, IL (US);
Thomas P. Krauss, Algonquin, IL (US);
Kevin L. Baum, Rolling Meadows, IL (US);
Vijay Nangia, Algonquin, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In an OFDM system the same Walsh code is used at the same time for a plurality of transmitters. The multiple transmitters can be from the same, or different devices (e.g., different base stations on the downlink, different terminals on the uplink). Each subcarrier/antenna combination will share a similar pilot Walsh code, except for the fact that the scrambled spread pilot signals will be phase shifted on some subcarriers of some antennas, based on the subcarrier/antenna combination.