A general digital predistortion architecture using constrained feedback bandwidth for wideband power amplifiers

Y Liu, W Pan, S Shao, Y Tang - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
Digital predistortion (DPD) is one of the most effective techniques to mitigate the distortions
caused by power amplifier (PA) nonlinearity and memory effects. As the input signal …

Low feedback sampling rate digital predistortion for wideband wireless transmitters

Z Wang, W Chen, G Su, FM Ghannouchi… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
A novel digital predistortion (DPD) with an ultralow feedback sampling rate is proposed for
wideband wireless communications. Analytical groundwork is carried out to support the …

Overview of evolutionary algorithms and neural networks for modern mobile communication

L Kouhalvandi, I Shayea, S Ozoguz… - Transactions on …, 2022 - Wiley Online Library
The sixth generation (6G) of mobile networks must support the huge growth of mobile
connections and provides various intelligent services in future mobile networks. For that …

Closed-loop digital predistortion (DPD) using an observation path with limited bandwidth

RN Braithwaite - IEEE Transactions on Microwave Theory and …, 2015 - ieeexplore.ieee.org
This paper shows that digital predistortion (DPD) used to linearize an RF power amplifier
(PA) can achieve wide bandwidth distortion cancellation using measurements obtained from …

[PDF][PDF] 基于循环平稳特性的欠采样宽带数字预失真研究

兰榕, 胡欣, 邹峰, 王刚, 罗积润 - 电子与信息学报, 2020 - jeit.ac.cn
兰榕①② 胡欣③ 邹峰① 王刚① 罗积润* ① ① (中国科学院电子学研究所北京100190) ②
(中国科学院大学北京100049) ③ (北京邮电大学北京100876) 摘要: 为了解决行波管(TWT) …

Low-feedback sampling rate digital predistortion using deep neural network for wideband wireless transmitters

X Hu, Z Liu, W Wang, M Helaoui… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this paper, a low-feedback-sampling-rate digital predistortion (DPD) method is proposed
for wideband wireless transmitters and radio-frequency power amplifiers (PAs). This DPD …

[HTML][HTML] Blind Compensation of I/Q Impairments in Wireless Transceivers

M Aziz, FM Ghannouchi, M Helaoui - Sensors, 2017 - mdpi.com
The majority of techniques that deal with the mitigation of in-phase and quadrature-phase
(I/Q) imbalance at the transmitter (pre-compensation) require long training sequences …

Under-sampling digital predistortion of power amplifier using multi-tone mixing feedback technique

J Peng, F You, S He - IEEE Transactions on Microwave Theory …, 2021 - ieeexplore.ieee.org
An under-sampling digital predistortion based on a multi-tone mixing feedback technique
(MTM-DPD) is presented in this article. In contrast to the under-sampling digital predistortion …

[PDF][PDF] 功放数字预失真线性化技术发展趋势与挑战

刘昕, 陈文华, 吴汇波, 冯正和 - Inform, 2022 - chenweixiang.github.io
摘要射频功率放大器是发射机的核心器件之一, 它在提供高效率的同时也成为了发射机非线性
失真的主要来源. 因此, 发射机往往采用额外的功放线性化技术以兼顾效率和线性度, 其中 …

Modified indirect learning applied to neural network-based pre-distortion of a concurrent dual-band CMOS power amplifier

L Schuartz, LBC Freire, AT Hara, AA Mariano… - … Integrated Circuits and …, 2021 - Springer
Current radio communication systems that adopt amplitude and phase modulations demand
high linearity and high efficiency. The cascade connection between digital baseband pre …