公开(公告)号：US20140118066A1

公开(公告)日：2014-05-01

申请号：US14067421

申请日：2013-10-30

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong Hoon LEE ,  Jin Hyun So ,  Eui Rim Jeong ,  Sung Ho Choi ,  Seung Hyeok Ahn

IPC: H03F1/32

CPC classification number: H03F1/3247 ,  H03F3/24 ,  H03F2200/102

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.

Abstract translation: 这里公开了一种使用包络检测反馈的低成本数字预失真装置。 低成本数字预失真装置包括数字预失真单元和包络检测反馈单元。 数字预失真单元将预失真器的输出转换为模拟信号，将模拟信号频率调制成通带信号，并通过功率放大器放大调频信号。 包络检测反馈单元将数字预失真单元的功率放大器的输入和输出与功率放大器的输出之间的差分别转换为基带信号，将基带信号转换为数字信号，估计非线性失真特性输出 功率放大器，计算用于补偿功率放大器的估计的非线性失真特性输出的预失真参数。

公开(公告)号：US09148093B2

公开(公告)日：2015-09-29

申请号：US14067421

申请日：2013-10-30

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong Hoon Lee ,  Jin Hyun So ,  Eui Rim Jeong ,  Sung Ho Choi ,  Seung Hyeok Ahn

IPC: H03F1/32 ,  H03F3/24

CPC classification number: H03F1/3247 ,  H03F3/24 ,  H03F2200/102

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.

Abstract translation: 这里公开了一种使用包络检测反馈的低成本数字预失真装置。 低成本数字预失真装置包括数字预失真单元和包络检测反馈单元。 数字预失真单元将预失真器的输出转换为模拟信号，将模拟信号频率调制成通带信号，并通过功率放大器放大调频信号。 包络检测反馈单元将数字预失真单元的功率放大器的输入和输出与功率放大器的输出之间的差分别转换为基带信号，将基带信号转换为数字信号，估计非线性失真特性输出 功率放大器，计算用于补偿功率放大器的估计的非线性失真特性输出的预失真参数。