Behavioral modeling and linearization of wideband RF power amplifiers using BiLSTM networks for 5G wireless systems

J Sun, W Shi, Z Yang, J Yang… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Characterization and linearization of RF power amplifiers (PAs) are key issues of fifth-
generation wireless communication systems, especially when high peak-to-average ratio …

Digital predistortion for hybrid MIMO transmitters

M Abdelaziz, L Anttila, A Brihuega… - IEEE Journal of …, 2018 - ieeexplore.ieee.org
This paper investigates digital predistortion (DPD) linearization of hybrid beamforming large-
scale antenna transmitters. We propose a novel DPD processing and learning technique for …

Piecewise digital predistortion for mmWave active antenna arrays: Algorithms and measurements

A Brihuega, M Abdelaziz, L Anttila… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
In this article, we describe a novel framework for digital predistortion (DPD)-based
linearization of strongly nonlinear millimeter-wave active antenna arrays. Specifically, we …

Passive intermodulation in simultaneous transmit–receive systems: Modeling and digital cancellation methods

MZ Waheed, D Korpi, L Anttila, A Kiayani… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
This article presents novel solutions for suppressing passive intermodulation (PIM) distortion
in frequency-division duplexing (FDD)-based radio transceivers, stemming from nonlinear …

Gradient-adaptive spline-interpolated LUT methods for low-complexity digital predistortion

PP Campo, A Brihuega, L Anttila… - … on Circuits and …, 2020 - ieeexplore.ieee.org
In this paper, new digital predistortion (DPD) solutions for power amplifier (PA) linearization
are proposed, with particular emphasis on reduced processing complexity in future 5G and …

Survey: Characterization and mitigation of spatial/spectral interferers and transceiver nonlinearities for 5G MIMO systems

N Peccarelli, B James, R Irazoqui… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
With an incredible increase in the number of wireless devices and an ever-growing demand
for high data rates, 5G needs to provide a solution to satisfy the demand for the next decade …

Closed-loop sign algorithms for low-complexity digital predistortion: Methods and performance

PP Campo, V Lampu, L Anttila… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
In this article, we study digital predistortion (DPD)-based linearization with a specific focus
on millimeter-wave (mmW) active antenna arrays. Due to the very large-channel bandwidths …

Digital predistortion in large-array digital beamforming transmitters

A Brihuega, L Anttila, M Abdelaziz… - 2018 52nd Asilomar …, 2018 - ieeexplore.ieee.org
In this article, we propose a novel digital predistortion (DPD) solution that allows to
considerably reduce the complexity resulting from linearizing a set of power amplifiers (PAs) …

Beam-level frequency-domain digital predistortion for ofdm massive mimo transmitters

A Brihuega, L Anttila, M Valkama - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this article, a novel digital predistortion (DPD) solution for fully digital multiple-input–
multiple-output (MIMO) transmitters (TXs) is proposed. Opposed to classical DPD solutions …

Low-complex digital cancellation of transmitter harmonics in LTE-A/5G transceivers

C Motz, T Paireder, M Huemer - IEEE open Journal of the …, 2021 - ieeexplore.ieee.org
Nowadays, mobile communication radio frequency transceivers for LTE-A/5G usually
operate in frequency-division duplex mode and support carrier aggregation. The resulting …