Invention Grant
- Patent Title: Distortion compensation apparatus and method
- Patent Title (中): 失真补偿装置及方法
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Application No.: US14248680Application Date: 2014-04-09
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Publication No.: US09276533B2Publication Date: 2016-03-01
- 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: JP2013-155130 20130726
- Main IPC: H03F3/189
- IPC: H03F3/189 ; H03F1/32 ; H03F3/24 ; H03G3/30
Abstract:
A distortion compensation apparatus compensates for non-linear distortion of a power amplifier. The distortion compensation apparatus includes a pre-distorter, a learning unit, and a gain control unit. During training of the pre-distorter, the learning unit repeatedly updates a compensation coefficient on the basis of signals output from the power amplifier. While the training continues after update of the compensation coefficient, the gain control unit performs gain control on a signal before input to the power amplifier.
Public/Granted literature
- US20150028947A1 DISTORTION COMPENSATION APPARATUS AND METHOD Public/Granted day:2015-01-29
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