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:
Aug. 11, 2015
Filed:
May. 27, 2011
Shimpei to, Osaka, JP;
Takashi Onodera, Osaka, JP;
Kozue Hirata, Osaka, JP;
Hiroshi Nakano, Osaka, JP;
Hiromichi Tomeba, Osaka, JP;
Shimpei To, Osaka, JP;
Takashi Onodera, Osaka, JP;
Kozue Hirata, Osaka, JP;
Hiroshi Nakano, Osaka, JP;
Hiromichi Tomeba, Osaka, JP;
SHARP KABUSHIKI KAISHA, Osaka, JP;
Abstract
When spatial multiplexing is performed to any of a plurality of receiving antennas included in each terminal, it becomes possible to obtain excellent receiving characteristics by combining signals received by all antennas appropriately. A receiving antenna unitreceives channel state information from each terminal, a channel matrix H is obtained. A transmit weight/interference coefficient calculation unitcalculates a transmit weight and an interference coefficient based on channel matrix. The transmit weight is input to transmit weight multiplication unitsand. The interference generation unitgenerates an interference signal based on the interference coefficient. An interference subtraction unitsubtracts the interference signal from a desired signal. A modulo unitadds a signal so that amplitude of an information signal output from the interference subtraction unitfalls within a constant range. A signal multiplexing unitperforms spatial multiplexing to the signal performed nonlinear arithmetic.