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:
Nov. 17, 2015
Filed:
Oct. 17, 2013
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Hiroyoshi Ishikawa, Yokohama, JP;
Toshio Kawasaki, Kawasaki, JP;
Alexander Nikolaevich Lozhkin, Kawasaki, JP;
Kazuo Nagatani, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A distortion compensation device includes: a distortion compensator configured to output, to a power amplifier, a predistortion signal obtained by performing distortion compensation processing on a transmission signal by using a distortion compensation coefficient, wherein the distortion compensator limits bands of a reference signal and a feedback signal so that the bands fall in a pass band and updates the distortion compensation coefficient based on an error between the reference signal and the feedback signal, the reference signal corresponding to the predistortion signal, the feedback signal corresponding to an output feedback of the power amplifier.