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. 03, 2014
Filed:
Apr. 06, 2010
Mihai Enescu, Espoo, FI;
Timo Roman, Espoo, FI;
Tommi Koivisto, Espoo, FI;
Timo Lunttila, Espoo, FI;
Shuang Tan, Beijing, CN;
Helka-liina Määttänen, Helsinki, FI;
Kari Pietikäinen, Espoo, FI;
Mihai Enescu, Espoo, FI;
Timo Roman, Espoo, FI;
Tommi Koivisto, Espoo, FI;
Timo Lunttila, Espoo, FI;
Shuang Tan, Beijing, CN;
Helka-Liina Määttänen, Helsinki, FI;
Kari Pietikäinen, Espoo, FI;
Nokia Corporation, Espoo, FI;
Abstract
A first precoding matrix Wis selected from a first codebook comprising sets of rank specific precoding matrices. The first codebook is characterized by there being fewer precoding matrices associated with higher ranks than associated with lower ranks, and characterized by precoding matrices associated with ranks above a certain rank all being diagonal matrices. The selected first precoding matrix Wis used to select a rank-specific second precoding matrix Wfrom a second codebook, such that the selected first and second precoding matrices form a joint precoder specific to a desired rank. The second codebook is characterized by differently sized precoding matrices associated with each of N total ranks, in which N is an integer greater than one. Information on the joint precoder is reported to a network node over an uplink transmission channel.