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:
Jun. 23, 2009
Filed:
Oct. 29, 2004
Michael Speth, Krefeld, DE;
Michael Speth, Krefeld, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A mobile station sends to the base stations a bit vector which contains weighting factors (w, w) for the amplitudes and/or the phases of the signals to be emitted from the antennas. The bit vector is updated by changing one bit position for each time slot, and by transmitting this from the mobile station to the base station in the form of a bit (e.g., an FBI (feedback information) bit). A trellis diagram can be set up comprising the possible states of the bit vector and the possible state changes (branches) and the Viterbi algorithm can be used for the determination of the weighting factors actually used by the base station, taking account of both the currently transmitted training symbols and the previously transmitted training symbols.