The proposed loop delay correction scheme is applied to an adaptive digital predistorter in an orthogonal frequency-division multiplexing (OFDM) system.
Abstract—As one of the most common linearization tech- niques, adaptive digital predistortion minimizes the difference.
Loop Delay Correction for Adaptive Digital Linearization of Power Amplifiers. S. Tang, K. Gong, J. Wang, K. Peng, C. Pan, and Z. Yang. WCNC, page 1987-1990.
Loop Delay Correction for Adaptive Digital Linearization of Power Amplifiers ... Loop Delay Correction for Adaptive Digital Linearization of Power Amplifiers.
本文提出了一种新的两级环路延迟校正方案。在第一阶段，根据输入信号与反馈信号的相互关系估计输入信号与反馈信号之间的整数延迟。在第二阶段，两个信号之间的分数级延迟 ...
Aug 17, 2009 · Since the fractional delay estimator is adaptive, the predistorter is capable of tracking any loop delay variation caused by the environment.
A Fast Accurate Time Delay Estimation Method in the Digital ...
www.sciencedirect.com › article › pii
The piecewise-parabolic filter and the bisection method are used to change the sampling start of the feedback signal and to choose the loop delay adjustment ...
In accordance with the invention, the delay generated by the power amplifier in the feedback is compensated by delaying a local oscillator signal applied to the ...
Abstract—We have developed a new adaptive digital predis- tortion (DPD) linearization technique based on analog feedback predistortion (FBPD).
Predistortion technology is an adaptive, low cost and potential linearization method. Proper loop-delay estimation and compensation are important ...