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:
Feb. 01, 2011
Filed:
Sep. 25, 2009
Hiroyoshi Ishikawa, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Hiroyoshi Ishikawa, Kawasaki, JP;
Kazuo Nagatani, Kawasaki, JP;
Hajime Hamada, Kawasaki, JP;
Nobukazu Fudaba, Kawasaki, JP;
Yuichi Utsunomiya, Kawasaki, JP;
Yasuyuki Oishi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A distortion correction control apparatus is for compensating for a burst distortion of a transmission amplifier caused by a burst of an input signal of a transmission target. The apparatus includes a generation unit that generates a distortion correction coefficient having reverse characteristics to the foregoing burst distortion; a unit that multiplies the distortion correction coefficient output from the generation unit by the input signal or adds the distortion correction coefficient output from the generation unit to the input signal, upon reception of burst information notifying of switching between presence and absence of the input signal; and an update unit that updates, based on the input signal and a branch signal fed back as an output signal of the transmission amplifier, parameters of functions used for adaptively generating the distortion correction coefficient, and that inputs the updated parameters to the generation unit.