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:
Apr. 07, 2009
Filed:
Mar. 24, 2006
Shigenori Uchida, Kanagawa, JP;
Shinichi Kuroda, Tokyo, JP;
Shigenori Uchida, Kanagawa, JP;
Shinichi Kuroda, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is a wireless communication apparatus which receives, by multiple antennas, signals created by spatially multiplexing multiple transmit streams subjected to power allocation. The wireless communication apparatus has a channel matrix estimator which estimates a channel matrix of spatially multiplexed channels, a spatial demultiplexer which obtains an antenna receive weight matrix from the estimated channel matrix and demultiplexes into multiple receive streams by multiplying receive signals of antennas by the antenna receive weight matrix, and a power estimator which estimates power allocation information as to each stream. In the wireless communication apparatus, the channel matrix estimator estimates a channel matrix in view of power allocation to each stream estimated by the power estimator.