Results 71 to 80 of about 164 (124)

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

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

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

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

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

Linearization of Power Amplifiers by digital predistortion (DPD) for applications in tactical communications and digital diffusion

, 2015
L'amplificateur de puissance est le module le plus critique dans les équipements de communication radio. Il détermine la qualité de la liaison par sa linéarité et a une contribution conséquente dans la consommation de l'émetteur ; environ 60% de l'énergie consommée est consacré à l'amplification.
openaire   +1 more source

Digital Predistortion Based Experimental Evaluation of Optimized Recurrent Neural Network for 5G Analog Radio Over Fiber Links

IEEE Access
In the context of Enhanced Remote Area Communications (ERAC), Radio over Fiber (RoF) technology plays a crucial role in extending reliable connectivity to underserved and remote areas. This paper explores the significance of fifth-generation (5G) Digital
Muhammad Usman Hadi, Kamaluddeen Usman Danyaro, Alawi AlQushaibi, Rizwan Qureshi, Tanvir Alam   +4 more
doaj   +1 more source