Results 81 to 90 of about 35,890,141 (157)

A Subsampled Adaptive Subband Digital Predistortion Algorithm

, 2014
International audienceDigital predistortion (DPD) is a technique that aims at linearizing power amplifiers and thus allows energy efficiency improvements. However, this technique requires, wideband and high dynamic range analog-to-digital converters (ADC)
Loumeau, P., Abi Hussein, Mazen, Pham, Dang-Kièn Germain, Desgreys, Patricia, Venard, Olivier, Gagnon, François, Gagnon, Ghyslain   +6 more
core   +2 more sources

Dynamic Power Splitting in a Hybrid Common-Emitter/Common-Base Doherty Amplifier for High Average Efficiency Above 100 GHz Using an InP HBT Process

IEEE Journal of Microwaves
A Doherty power amplifier is introduced that uses a hybrid combination of common-emitter (CE) and common-base (CB) devices for operation above 100 GHz. The use of CE and CB devices demonstrates dynamic input power splitting between a main and auxiliary ...
Eythan Lam, James F. Buckwalter
doaj   +1 more source

DPD-KAN: Kolmogorov-Arnold Networks for Low Complexity Digital Predistortion in 5G Analog Radio-over-Fiber Systems

Paper accepted for oral presentation at ECOC ...
Khalid, Bilal, Cavaliere, Fabio, Giorgi, Luca, Freire, Pedro, Turitsyn, Sergei K., Prilepsky, Jaroslaw E.   +5 more
openaire   +2 more sources

Full-Wave Digital Predistortion Linearization Based on Memory Polynomials for HF Power Amplifiers

IEEE Access
In order to suppress the intermodulation distortion and harmonic distortion caused by the nonlinearity of a HF power amplifier (PA), this paper presents a nonlinear correction method for full wave digital predistortion (DPD) of a HF PA based on a memory ...
Junshi Lv, Gaoming Xu, Chengting Zhang, Haili Zhang, Taijun Liu   +4 more
doaj   +1 more source

GPU-Based Implementation of Pruned Artificial Neural Networks for Digital Predistortion Linearization of Wideband Power Amplifiers

IEEE Journal of Microwaves
This paper presents a feature selection technique based on $\ell _{1}$ regularization to select the most relevant weights of artificial neural networks (ANNs) for digital predistortion (DPD) linearization of wideband radio-frequency (RF) power amplifiers
Wantao Li, Raul Criado, William Thompson, Gabriel Montoro, Kevin Chuang, Pere L. Gilabert   +5 more
doaj   +1 more source

FPGA-Deployed Lightweight Adaptive Hybrid DPD Implementation for PA Linearization in LEO STIN

IEEE Open Journal of the Communications Society
Power amplifiers (PAs) are essential components of Space–Terrestrial Integrated Networks (STINs), where they compensate for the high propagation losses associated with long-distance satellite communication links.
Pubalee Podder, Swapnendu Das, Prabir Saha, Alak Majumder, Shubhankar Majumdar   +4 more
doaj   +1 more source

Evolutionary Multiobjective Optimization for Adaptive Dataflow-based Digital Predistortion Architectures

, 2017
In wireless communication systems, high-power transmitters suffer from nonlinearities due to power amplifier (PA) characteristics, I/Q imbalance, and local oscillator (LO) leakage.
Jani Boutellier, Valkama, Mikko, Lauri Anttila, Ghazi, Amanullah, Li, Lin, Boutellier, Jani, Anttila, Lauri, Lin Li, Bhattacharyya, Shuvra S., Shuvra S. Bhattacharyya, Amanullah Ghazi, Mikko Valkama   +11 more
core   +1 more source

A 0.6–0.8 GHz CMOS Frequency-Tunable Nonmagnetic Circulator With Digital Predistortion-Based Linearity Enhancement for in-Band Full-Duplex Radios

IEEE Access
In this article, a 0.6–0.8 GHz CMOS frequency-tunable nonmagnetic circulator employing a hybrid-capacitor-based C–L–C transmission line and digital-predistortion (DPD)-assisted linearization is presented for advanced in-band full ...
Donggu Lee, Chanhee Cho, Taekyu Kim, Seungyeon Kim, Sukju Yun, Seungyoung Park, In-Chul Hwang, Kabseok Ko, Kuduck Kwon   +8 more
doaj   +1 more source

Digital Predistorter Design Using a Reduced Volterra Model to Linearize GaN RF Power Amplifiers [PDF]

Radioengineering, 2018
In this paper, a novel method for reducing a Simplified Volterra Series (SVS) model size is proposed for GaN RF Power Amplifier (PA) Digital Predistorter (DPD) design.
H. Rezgui, F. Rouissi, A. Ghazel
doaj  

A digital predistortion model based on augmented phase-normalized mamba network

Engineering Science and Technology, an International Journal
In this paper, a Mamba network incorporating augmented phase normalization (APN-Mamba) is proposed for digital predistortion (DPD). The proposed model consists of three stages.
Zhengying Yang, Shuman Kong, Tianfu Cai, Sijie Zhang, Yi Jin, Mingyu Li   +5 more
doaj   +1 more source