Results 71 to 80 of about 35,890,141 (157)

Bandwidth, Power and Carrier Configuration Resilient Neural Networks Digital Predistorter

IEEE Access, 2023
This paper proposes a neural networks predistorter based on the bidirectional long-short-term memory (BiLSTM) structure. The proposed predistorter was trained while ensuring that it captures the full intrinsic behavior of the device under test including ...
Asma Ali, Oualid Hammi
doaj   +1 more source

Reduced-complexity digital predistortion for massive MIMO

, 2017
<p>A novel reduced-complexity digital predistortion (DPD) solution is presented in this paper. The proposed DPD can suppress the unwanted distortions due to power amplifier (PA) nonlinearity and I/Q modulator impairments in direct conversion ...
Valkama, Mikko, Lauri Anttila, Anttila, Lauri, Mahmoud Abdelaziz, Abdelaziz, Mahmoud, Mikko Valkama   +5 more
core   +1 more source

Adaptive digital feedback predistortion technique for linearizing power amplifiers

, 2019
We have developed a new adaptive digital predistortion (DPD) linearization technique based on analog feedback predistortion (FBPD). The lookup-table-based feedback input can remove the bandwidth limitation of the feedback circuit related to the loop ...
Yi, J, Kim, J, Woo, YY, Kim, I, Hong, SC, Kim, B, Moon, J   +6 more
core   +1 more source

Digital Predistortion in Large-Array Digital Beamforming Transmitters

, 2018
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) in single-user large-scale digital beamforming transmitters. In contrast
Valkama, Mikko, Lauri Anttila, Brihuega, Alberto, Anttila, Lauri, Mahmoud Abdelaziz, Abdelaziz, Mahmoud, Alberto Brihuega, Mikko Valkama   +7 more
core   +1 more source

An X-Band Dual Function Transceiver Utilizing Digital Predistortion for Radar and Communication in 250 nm GaN HEMT

IEEE Access
We present an X-band transceiver with memory polynomial digital predistortion (MP-DPD) and neural network digital predistortion (NN-DPD) for a dual-function radar and communication (DFRC) system targeting 6G FR3 in $0.25\mu $ m GaN High Electron ...
Tae-Hoon Kim, Jun Kwon, Mun-Kyo Lee, Bok-Hyung Lee, Jung-Dong Park   +4 more
doaj   +1 more source

Model-Order Reduction of Multistage Cascaded Models for Digital Predistortion

IEEE Journal of Microwaves
This paper explores the benefits of utilizing multistage cascaded (CC) behavioral models for digital predistortion (DPD) linearization of wideband high-efficiency power amplifiers (PAs).
Raul Criado, Wantao Li, William Thompson, Gabriel Montoro, Kevin Chuang, Pere L. Gilabert   +5 more
doaj   +1 more source

Distortion correction of LDMOS power amplifiers using hybrid RF second harmonic injection/digital predistortion linearization [PDF]

, 2006
An LDMOS RF power amplifier for RF multichannel wireless systems with improved IMD performance characteristics is presented. The application of two combined linearization methods is being tested with the help of circuit simulation software ADS.
Budimir, D., Koulouzis, H.
core   +1 more source

Low Complexity Concurrent Multi-Band Modeling and Digital Predistortion for Harmonically Driven Wireless Amplifiers

IEEE Access
With the cutting-edge 5G/6G signals and corresponding demands of the multi-band and ultra-wideband transmitters, numerous digital predistortion (DPD) models have been proposed for the removal of Power Amplifier’s (PA) distortions in concurrent ...
Praveen Jaraut, Mohamed Helaoui, Meenakshi Rawat, Wenhua Chen, Fadhel M. Ghannouchi   +4 more
doaj   +1 more source

Carrier Aggregated Radio-Over-Fiber Downlink for Achieving 2Gbps for 5G Applications

IEEE Access, 2019
We demonstrate experimentally, for the first time, a distributed digital predistortion model for radio-over-fiber (RoF) downlink suitable for broadband 5G signals.
Mahmood Noweir, Mohamed Helaoui, Wolfgang Tittel, Fadhel M. Ghannouchi   +3 more
doaj   +1 more source

Digital Predistortion for Multi-Antenna Transmitters Affected by Antenna Crosstalk [PDF]

, 2017
In this paper, a digital predistortion (DPD) technique for wideband multi-antenna transmitters is proposed. The proposed DPD compensates for the combined effects of power amplifier (PA) nonlinearity, antenna crosstalk and impedance mismatch. The proposed
Fager, Christian, Fager, Christian,, Hausmair, Katharina, Gustavsson, Ulf, Christian Fager, Landin, Per,, Katharina Hausmair, Eriksson, Thomas,, Eriksson, Thomas, Landin, Per, Per N. Landin, Hausmair, Katharina,, Landin, Per N., Ulf Gustavsson, Gustavsson, Ulf,, Thomas Eriksson   +15 more
core   +1 more source