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. 28, 2008
Filed:
May. 31, 2007
Seigo Nakao, Gifu, JP;
Yasutaka Ogawa, Sapporo, JP;
Takeo Ohgane, Sapporo, JP;
Toshihiko Nishimura, Sapporo, JP;
Hiroshi Nishimoto, Sapporo, JP;
Seigo Nakao, Gifu, JP;
Yasutaka Ogawa, Sapporo, JP;
Takeo Ohgane, Sapporo, JP;
Toshihiko Nishimura, Sapporo, JP;
Hiroshi Nishimoto, Sapporo, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
National University Corporation Hokkaido University, Hokkaido, JP;
Abstract
A plurality of antennas transmit multicarrier signals composed of a plurality of streams. An IF unit acquires, per carrier, a channel matrix having elements the number of which is determined by the number of a plurality of transmitting antennas and the number of a plurality of receiving antennas provided in a receiving apparatus. A baseband processing unit derives a common autocorrelation matrix for the channel matrix acquired per carrier. The baseband processing unit derives a steering matrix by eigenvalue-decomposing the derived common autocorrelation matrix. The baseband processing unit derives, per carrier, weight vectors for a plurality of streams in a manner such that an orthonormalization is performed respectively on matrices obtained by operating the derived steering matrix on the channel matrix per carrier.