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:
Apr. 16, 2002
Filed:
Jan. 21, 2000
Applicant:
Inventors:
Francesc Boixadera Espax, Chatenay Malabry, FR;
Yann Farmine, Vaux sur Seine, FR;
Nicholas Whinnett, Paris, FR;
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 3/22 ; H01Q 3/24 ; H01Q 3/26 ;
U.S. Cl.
CPC ...
H01Q 3/22 ; H01Q 3/24 ; H01Q 3/26 ;
Abstract
Antenna weights for a transmit path ( ) between two communication devices ( ), the first device ( ) having an antenna array ( ) are generated in the second device ( ) and fed back to weighting circuitry ( ) in the first device ( ). The invention is particularly applicable to multicarrier systems such as OFDM systems. Only weights for those sub-carriers identified as being received with comparatively poor signal quality are calculated and fed back to the first device ( ), thus limiting the additional overhead requirements to a minimum.