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:
Oct. 01, 2013
Filed:
Jun. 21, 2007
Henrik Asplund, Stockholm, SE;
Jonas Medbo, Uppsala, SE;
Mathias Riback, Danderyd, SE;
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
The present invention relates to a method for adapting transmission parameters in a transmitter Tin communication with at least one antenna. The method comprises: transmitting a signal from the transmitter Tmeasuring at least one reflection coefficient Sof said signal for each antenna, and adapting the transmission parameters based on the measured reflection coefficient S. The antenna could be a transmit antenna and/or a receive antenna. In a preferred embodiment antenna calibration may be performed by measuring propagation time for each individual transmitter chain, and compensate for differences in time delay between the individual transmitter chainsto assure that the signal is transmitted simultaneously from all transmit antennas.