Results 1 to 10 of about 4,622,355 (269)

Feature Extraction Methods for Electroretinogram Signal Analysis: A Review

open access: yesIEEE Access, 2021
Feature extraction is an essential aspect of electroretinogram (ERG) signal analysis. The extracted features are beneficial to analyze the signal further and compress the signal for storage or transmission purposes.
Soroor Behbahani   +2 more
doaj   +1 more source

Time Domain Analysis of NB-IoT Signals

open access: yesApplied Sciences, 2023
The NB-IoT (NarrowBand-Internet of Things) radio technology is now widely implemented by mobile phone network operators to support the communication of IoT devices such as smart meters, insurance black boxes for cars, network connected waste bins, smart ...
Andrea Barellini   +3 more
doaj   +1 more source

Time and Frequency Domain Dynamic Analysis of Offshore Mooring

open access: yesJournal of Marine Science and Engineering, 2021
The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method
Shi He, Aijun Wang
doaj   +1 more source

Time-Domain Implementation and Analyses of Multi-Motion Modes of Floating Structures

open access: yesJournal of Marine Science and Engineering, 2022
The study of wave-structure interactions involving nonlinear forces would often make use of the popular hybrid frequency–time domain method. In the hybrid method, the frequency-domain analysis could firstly provide the reliable and accurate dynamic ...
Wanan Sheng   +6 more
doaj   +1 more source

Boosting NOMA systems through smart metasurfaces

open access: yesFrontiers in Communications and Networks, 2022
Smart metasurfaces have recently emerged as a promising paradigm for next-generation wireless communication systems, providing a reconfigurable radio propagation environment for a wide range of services and applications.
Piergiuseppe Di Marco   +4 more
doaj   +1 more source

Time Domain Characteristic Mode Analysis for Transmission Problems

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
Characteristic mode analysis (CMA) is based on time-harmonic electromagnetics and applied mostly in frequency domain. In this paper, CMA is extended to time domain (TD) for transmission problems. Based on the modal self- and mutual-admittance of two-port
Qi Wu, Zhongkui Wen
doaj   +1 more source

Detailed modelling and analysis of digital mho distance relay with single-pole operation

open access: yesActa Polytechnica, 2021
This paper introduces a methodology for modelling a digital admittance-type distance relay using PSCAD/EMTDC. The proposed distance relay was tested in a simulation of the Brazilian power grid with predetermined fault scenarios. The goal of this paper is
Paulo Henrique Barbosa de Souza Pinheiro   +4 more
doaj   +1 more source

Frequency-Domain Analysis of Linear Time-Periodic Systems [PDF]

open access: yes, 2004
In this paper, we study convergence of truncated representations of the frequency-response operator of a linear time-periodic system. The frequency-response operator is frequently called the harmonic transfer function. We introduce the concepts of input,
Bernhardsson, Bo   +2 more
core   +1 more source

Time-domain parametric sensitivity analysis of multiconductor transmission lines [PDF]

open access: yes, 2011
We present a new parametric macromodeling technique for lossy and dispersive multiconductor transmission lines (MTLs). This technique can handle design parameters, such as substrate or geometrical layout features, and provide time-domain sensitivity ...
Antonini, G   +4 more
core   +2 more sources

Harmonic analysis based on time domain mutual-multiplication window

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
The signal spectral leakage and fence effect are prone to take place during the power harmonic analysis by fast fourier transform (FFT) under asynchronous sampling. The inhibiting ability of classical window functions is restricted by side-lobe behaviors.
Tianyuan Tan   +5 more
doaj   +1 more source

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