Invention Grant
- Patent Title: Distortion compensation apparatus and distortion compensation method
- Patent Title (中): 失真补偿装置和失真补偿方法
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Application No.: US14490200Application Date: 2014-09-18
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Publication No.: US09397619B2Publication Date: 2016-07-19
- Inventor: Alexander Nikolaevich Lozhkin
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Fujitsu Patent Center
- Priority: JP2014-015581 20140130
- Main IPC: H03F1/26
- IPC: H03F1/26 ; H03F1/32 ; H03F3/19 ; H03F3/24
Abstract:
A predistorter gives an input signal inputted to a power amplifier distortion corresponding to a compensation coefficient. A band limiter limits components in a second frequency band other than a first frequency band of a feedback signal fed back from the power amplifier, and distorts components in the first frequency band according to the limited components in the second frequency band. A learner updates the compensation coefficient on the basis of the distorted feedback signal.
Public/Granted literature
- US20150214904A1 DISTORTION COMPENSATION APPARATUS AND DISTORTION COMPENSATION METHOD Public/Granted day:2015-07-30
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