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:
Jan. 10, 2012
Filed:
Apr. 29, 2009
Yusuke Ohwatari, Yokohama, JP;
Anass Benjebbour, Yokosuka, JP;
Tomoyuki Ooya, Yokohama, JP;
Junichiro Hagiwara, Yokohama, JP;
Yusuke Ohwatari, Yokohama, JP;
Anass Benjebbour, Yokosuka, JP;
Tomoyuki Ooya, Yokohama, JP;
Junichiro Hagiwara, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A disclosed radio communication apparatus includes a preceding unit configured to precode multiple streams, a splitting unit configured to split the precoded streams into two or more stream sets each including one or more streams, a sub power optimization unit configured to execute an iterative transmit power optimization algorithm on each of the split stream sets to determine respective transmit power levels for the individual stream sets, a power optimization unit configured to execute the iterative transmit power optimization algorithm by using the determined transmit power levels as initial values for the iterative transmit power optimization algorithm to determine respective transmit power levels for the individual streams, and a transmission unit configured to transmit radio signals from individual transmit antennas at the determined transmit power levels.