Results 71 to 80 of about 35,253,731 (205)
Digital Predistortion for Dual-Input Doherty Amplifiers [PDF]
, 2012 This paper presents a digital predistortion technique for dual-input Doherty power amplifiers. The proposed technique utilizes both RF inputs of the main and peak amplifiers in the digital predistorter.
Fager, Christian +14 more
core +1 more source
IET Signal Processing, Volume 2024, Issue 1, 2024.The analysis and interpretation of enormous amounts of data generated by 5G networks present several challenges related to noise, precision, and feasibility validation. Therefore, this study aims to evaluate the effectiveness of channel equalisation in the network and enhance it by distributing signals over all subcarriers and symbols.
Farhan Ali, He Yigang, Yongcheng Jing
wiley +1 more source
Reduced Complexity Sequential Digital Predistortion Technique for 5G Applications
Smart CitiesWireless communication infrastructure is a key enabling technology for smart cities. This paper investigates a novel technique to enhance the performance of 5G base stations by addressing the compensation of nonlinear distortions caused by radiofrequency
Moustafa Abdelnaby +3 more
doaj +1 more source
Research on linearisation of power amplifier based on digital pre-distortion
The Journal of Engineering, 2019 The power amplifier is an important device in the communication system, and its non-linear characteristics will lead to serious distortion of the output signal, reducing the performance of the communication system.
Kai Fang, Da Liu, Yongqing Wang
doaj +1 more source
OFDM-based beam-oriented digital predistortion for massive MIMO
, 2021 Linearization of massive MIMO arrays is a significant computational challenge that typically scales with the number of antennas. In this work, we introduce a beam-oriented digital predistortion (DPD) scheme for OFDM-based massive MIMO systems that ...
Alexios Balatsoukas-Stimming +8 more
core +1 more source
IEEE AccessIn this work, a formulation of alternating direction method of multipliers (ADMM) for addressing power amplifiers (PA) modeling and linearization problems is presented. The proposal consists on leveraging the implicit redundancy of the equations in order
Elias Marques-Valderrama +2 more
doaj +1 more source
IEEE Access, 2020 This paper proposes two novel vector decomposed neural network models for behavioral modeling and digital predistortion (DPD) of radio-frequency (RF) power amplifiers (PAs): vector decomposed long short-term memory (VDLSTM) model and simplified vector ...
Hongmin Li +3 more
doaj +1 more source
Design and Analysis of a CO-OFDM Transmitter With Limited Modulator Extinction Ratio
IEEE Photonics Journal, 2014 In this paper, we consider the design and analysis of a coherent optical OFDM (CO-OFDM) transmitter using an optical in-phase/quadrature (I/Q) modulator with limited extinction ratio (ER) under four modulation formats. The transmitter-side digital signal
Lingchen Huang +2 more
doaj +1 more source
Digital Predistortion of Pseudo-Orthogonal Wideband Waveforms for Dual-Polarimetric Phased Array Radars [PDF]
, 2016 Many new and interesting radar operational modes and techniques are being explored to maximize the efficiency and utility of next-generation radar systems while complying with increasingly stringent operational and budgeting requirements.
Dunn, Zachary
core
Model-Order Reduction of Multistage Cascaded Models for Digital Predistortion
IEEE Journal of MicrowavesThis 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 +5 more
doaj +1 more source