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:
May. 17, 2011
Filed:
Jul. 08, 2008
Applicants:
Nick W. Whinnett, Marlbough, GB;
Fei Tong, Swindon, GB;
Frederick W. Vook, Schaumburg, IL (US);
Inventors:
Assignee:
Motorola Mobility, Inc., Libertyville, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a system and method for transmit beamforming in a Frequency Division Duplex communication system. A first step () includes correcting for differences between transceiver receive and transmit responses within a base station. A next step () obtaining a beamforming weight of a phase antenna array on an uplink. A next step () transforming the uplink beamforming weight a downlink beamforming weight by applying a phase correction that is a function of wavelength at the uplink and downlink frequencies and distance between antenna elements.