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. 19, 2010
Filed:
Dec. 22, 2008
Mattias Wennström, Uppsala, SE;
Jaap Van DE Beek, Täby, SE;
Mattias Wennström, Uppsala, SE;
Jaap Van De Beek, Täby, SE;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An improved method for reducing an amount of precoding feedback information in a multi-carrier Multiple-Input Multiple-Output (MIMO) communication system using precoding is disclosed. At the receiving end, the method jointly selects, while considering transmission quality for each relevant combination of sub-bands and matrices, a limited number of P codebook indices and a limited number of K' sub-bands to be included in a subset ω (m, . . . , m) of a set Ω of allowed sub-bands. K′ is here set to a value K′<K and P is set to a value P≦K′. The P codebook indices and information identifying the subset ω is then conveyed to the transmitting end.