Invention Grant
US09148093B2 Low-cost digital predistortion apparatus and method using envelope detection feedback
有权
低成本数字预失真设备和使用包络检测反馈的方法
- Patent Title: Low-cost digital predistortion apparatus and method using envelope detection feedback
- Patent Title (中): 低成本数字预失真设备和使用包络检测反馈的方法
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Application No.: US14067421Application Date: 2013-10-30
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Publication No.: US09148093B2Publication Date: 2015-09-29
- Inventor: Yong Hoon Lee , Jin Hyun So , Eui Rim Jeong , Sung Ho Choi , Seung Hyeok Ahn
- Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
- Applicant Address: KR Daejeon
- Assignee: Korea Advanced Institute of Science and Technology
- Current Assignee: Korea Advanced Institute of Science and Technology
- Current Assignee Address: KR Daejeon
- Agency: Rabin & Berdo P.C.
- Priority: KR10-2012-0122302 20121031
- Main IPC: H03F1/32
- IPC: H03F1/32 ; H03F3/24
Abstract:
Disclosed herein is a low-cost digital predistortion apparatus using envelope detection feedback. The low-cost digital predistortion apparatus includes a digital predistortion unit and an envelope detection feedback unit. The digital predistortion unit converts the output of a predistorter into analog signals, frequency-modulates the analog signals into a pass band signal, and amplifies the frequency-modulated signal via a power amplifier. The envelope detection feedback unit converts the difference between the input and output of the power amplifier of the digital predistortion unit and the output of the power amplifier into baseband signals, respectively, converts the baseband signals into digital signals, estimates the nonlinear distortion characteristic output of the power amplifier, calculates a predistortion parameter that is used to compensate for the estimated nonlinear distortion characteristic output of the power amplifier.
Public/Granted literature
- US20140118066A1 LOW-COST DIGITAL PREDISTORTION APPARATUS AND METHOD USING ENVELOPE DETECTION FEEDBACK Public/Granted day:2014-05-01
Information query
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