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:
Oct. 14, 2025
Filed:
Sep. 10, 2020
Hitachi Kokusai Electric Inc., Tokyo, JP;
Kei Ito, Tokyo, JP;
Tatsuhiro Nakada, Tokyo, JP;
KOKUSAI DENKI Electric Inc., Tokyo, JP;
Abstract
The present invention allows a gain control to be appropriately effected even when a frame including no preamble signal block is used for wireless communications. The following processes are effected in a transmission power control unitof a transmission unit. Specifically, an automatic transmission gain control unitmultiplies a transmission signal by a gain value that is the difference between the power of a signal loop-backed from a power amplifierand the power of the transmission signal. A fixed transmission gain multiplying unitmultiplies the transmission signal by a predetermined gain value or by the gain value used in the automatic transmission gain control unitduring the preceding frame. A selection unitselects the transmission signal as gain-controlled by the automatic transmission gain control unitin a case of a preamble signal block being included in the frame of the transmission signal and selects the transmission signal as gain-controlled by the fixed transmission gain multiplying unitin a case of no preamble signal block being included in the frame of the transmission signal.