Results 41 to 50 of about 24,346 (205)

Frequency-domain transmit processing for MIMO SC-FDMA in wideband propagation channels [PDF]

open access: yes, 2009
This document is made available in accordance with publisher policies. Please cite only the published version using the reference above.
Nix, AR, Noune, MB
core   +3 more sources

Synergistic Enhancement of Modified‐PVDF Humidity Sensitivity via Chemical Adsorption‐Ionic Conductivity and its Application in Intelligent Powered Air‐Purifying Respirator

open access: yesENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 3, May 2026.
The study developed a PVDF/SiO2 humidity sensor with superhydrophobic properties and integrated the humidity sensor into the intelligent powered air‐purifying respirator (IPAPR) for breath monitoring. Coupled with the Gated Recurrent Unit (GRU) machine learning prediction algorithm, it enables feedforward control of the fan to achieve respiratory ...
Xinjian He   +9 more
wiley   +1 more source

A Highly Efficient Two‐Sided Temporal Convolutional Neural Network for Wideband Digital Predistortion of RF Power Amplifiers

open access: yesInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 39, Issue 3, May/June 2026.
ABSTRACT Behavioral models for Power Amplifier (PAs), particularly those based on Neural Networks (NNs), often suffer from high computational complexity when handling wideband signals. In this paper, we present a novel behavior model for wideband GaN PAs based on a Two‐Sided Temporal Convolutional Neural Network (TST‐CNN).
Haithem Rezgui   +3 more
wiley   +1 more source

A low complexity SI sequence estimator for pilot-aided SLM–OFDM systems [PDF]

open access: yes, 2016
Selected mapping (SLM) is a well-known method for reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems.
Adegbite, Saheed A.   +2 more
core   +1 more source

A Novel PM-OFDM-CDMA System for 5G Wireless Communication with High Capacity and Low Energy Consumption

open access: yesASM Science Journal, 2021
Phase Modulation Orthogonal Frequency Division Multiplexing (PM-OFDM) and Code Division Multiple Access (CDMA) have distinctive advantages. On one hand, PM-OFDM is an attractive technique to combat multipath fading and reduce high PAPR in conventional ...
Jamal Mestoui
doaj   +1 more source

Waveform design for Wireless Power Transfer [PDF]

open access: yes, 2016
Far-field Wireless Power Transfer (WPT) has attracted significant attention in recent years. Despite the rapid progress, the emphasis of the research community in the last decade has remained largely concentrated on improving the design of energy ...
Bayguzina, E, Clerckx, B
core   +2 more sources

From the Modeling of Experiments to the Ab Initio Prediction of Rate Constants: Statistical Rate Theory for a Quantitative Understanding of Gas‐Phase Ion Chemistry

open access: yesChemPhysChem, Volume 27, Issue 8, 28 April 2026.
For directly comparing experimental results on gas‐phase ion reactions with the predictions from quantum chemical calculations, the latter must first be converted into rate constants. This review addresses the question of whether current methods of statistical rate theory can accomplish this task reliably. Statistical rate theory has long been used for
Thomas Auth, Konrad Koszinowski
wiley   +1 more source

Peak-to-Average Power Ratio of Multicarrier Faster-Than-Nyquist Signals: Distribution, Optimization and Reduction

open access: yesIEEE Access, 2018
Multicarrier faster-than-Nyquist (MFTN) is a spectral efficient transmission scheme for future communication systems. However, as one of the most important drawbacks of multicarrier transmission systems, the peak-to-average power ratio (PAPR) of MFTN ...
Aijun Liu   +5 more
doaj   +1 more source

Democratic Representations [PDF]

open access: yes, 2015
Minimization of the $\ell_{\infty}$ (or maximum) norm subject to a constraint that imposes consistency to an underdetermined system of linear equations finds use in a large number of practical applications, including vector quantization, approximate ...
Baraniuk, Richard G.   +3 more
core  

On the peak-to-average power of OFDM signals based on oversampling [PDF]

open access: yes, 2003
Orthogonal frequency-division multiplexing (OFDM) introduces large amplitude variations in time, which can result in significant signal distortion in the presence of nonlinear amplifiers.
Gharavi-Alkhansari, Mohammad   +2 more
core   +1 more source

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