Invention Grant
US08421534B2 Predistorter for compensating for nonlinear distortion and method thereof
有权
用于补偿非线性失真的预失真器及其方法
- Patent Title: Predistorter for compensating for nonlinear distortion and method thereof
- Patent Title (中): 用于补偿非线性失真的预失真器及其方法
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Application No.: US13330986Application Date: 2011-12-20
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Publication No.: US08421534B2Publication Date: 2013-04-16
- Inventor: Young Hoon Kim , Gweon Do Jo , Kwang Chun Lee
- Applicant: Young Hoon Kim , Gweon Do Jo , Kwang Chun Lee
- Applicant Address: KR Daejeon
- Assignee: Electronics and Telecommunication Research Institute
- Current Assignee: Electronics and Telecommunication Research Institute
- Current Assignee Address: KR Daejeon
- Agency: William Park & Associates Ltd.
- Priority: KR10-2010-0131441 20101221
- Main IPC: H03F1/26
- IPC: H03F1/26
Abstract:
The predistorter may include: a predistortion filter predistorting an input signal to provide an output signal; a predistortion output estimation unit estimating the characteristics of a nonlinear device based on a signal processed by the nonlinear device and the output signal, and calculating a desired output signal of the predistortion filter by using the estimated characteristics of the nonlinear device; and an adaptive algorithm driving unit comparing the output signal with the desired output signal to output an error as a comparison result, calculating a filter coefficient according to which the calculated error is minimized, and providing the calculated filter coefficient to the predistortion filter in order to update a filter coefficient of the predistortion filter.
Public/Granted literature
- US20120154040A1 PREDISTORTER FOR COMPENSATING FOR NONLINEAR DISTORTION AND METHOD THEREOF Public/Granted day:2012-06-21
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