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:
Jan. 26, 2016
Filed:
Apr. 12, 2013
Nec Corporation, Tokyo, JP;
Yasushi Maruta, Tokyo, JP;
Duong Pham, Victoria, AU;
NEC CORPORATION, Tokyo, JP;
Abstract
This method of generating precoders is used in optimising transmission capacity between an eNodeB and UEs in a DL MU-MIMO communication system. The method includes the steps of computing correlation values between pairs of precoding matrices (PMs) of the reported precoding matrix indicators (PMIs) (step), selecting a PM pair having a minimum correlation value (step). If the minimum correlation value is less than a lower threshold T, the method uses a PM corresponding to the received PMI (step). If the minimum correlation value is greater than Tand less than an upper threshold T, the method includes the steps of computing correlation values of the reported PMI and Channel Matrices (CMs) from a fixed codebook of representative CMs (step), selecting a CM pair having a maximum correlation value (step), and computing precoders from the selected CM pair (step).