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:
Sep. 09, 2025
Filed:
Aug. 10, 2021
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A radio communication system that performs MIMO transmission. The radio communication system includes a precoding unit that precodes multi-streams of transmission signals in a time domain; a plurality of transmission power control units that controls transmission power of each multi-stream precoded by the precoding unit. Further, there is a plurality of amplification units that amplifies each multi-stream precoded by the precoding unit in accordance with control of the plurality of transmission power control units; and a number-of-taps control unit that performs control to change the number of taps of the precoding unit to improve communication quality of the multi-streams on the basis of quality information of a received signal fed back from a reception device that has received the multi-stream amplified by each of the plurality of amplification units.