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:
Mar. 04, 2014
Filed:
Dec. 15, 2009
Henrik Asplund, Stockholm, SE;
BO Göransson, Sollentuna, SE;
Fredrik Ovesjö, Älvsjö, SE;
Markus Ringström, Stockholm, SE;
Henrik Asplund, Stockholm, SE;
Bo Göransson, Sollentuna, SE;
Fredrik Ovesjö, Älvsjö, SE;
Markus Ringström, Stockholm, SE;
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
The invention relates to the technical field of radio communications, and in particular to an antenna device for a radio base station, and a method for precoding data in a Multiple-Input Multiple-Output (MIMO) system. Embodiments of the invention disclose a secondary precoderin series with a multiple-input multiple-output precoder. The secondary precoderhas a plurality of inputsand a plurality of outputs. The second plurality of inputs being in communication with each plurality of outputssuch that one or more signals input to a respective one or more of the second plurality of inputsprovides a substantially equal power of signals at the second plurality of outputs