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. 16, 2013
Filed:
Sep. 17, 2010
Naoki Okamoto, Chiba, JP;
Naoki Okamoto, Chiba, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
To obtain maximum throughput in accordance with characteristics of a propagation path, a radio transmission device having a plurality of transmitting antennas () for transmitting a transmission signal in units of sub-carriers by performing spatial multiplexing or without performing spatial multiplexing is provided that includes a sub-carrier modulation partmodulating the input transmission signal for each sub-carrier, a transmission signal allocation partallocating the transmission signal modulated for each of the sub-carriers to each of the transmitting antennas, and a transmission control partthat determines a multiplexing number for performing spatial multiplexing for each sub-carrier based on information received from another radio communication device as an opposite party, and outputs the determined multiplexing number to the sub-carrier modulation part and the transmission signal allocation part.