Results 11 to 20 of about 5,792,737 (294)

Damping System Designs using Nonlinear Frequency Analysis Approach [PDF]

open access: yes, 2012
The main purpose of this thesis focuses on the investigation of the frequency domain analysis and design approaches for nonlinear damping systems. With the development of modern mechanical and civil engineering structures, the vibration control has ...
Guo, Pengfei
core   +6 more sources

Mirror-induced reflection in the frequency domain

open access: yesNature Communications, 2022
We show frequency domain mirrors that provide reflections of optical mode propagation in the frequency domain. We theoretically investigated the mirror properties and experimentally demonstrate it using polarization and coupled-resonator-based coupling ...
Yaowen Hu   +6 more
doaj   +1 more source

A Frequency-Domain Convolutional Neural Network Architecture Based on the Frequency-Domain Randomized Offset Rectified Linear Unit and Frequency-Domain Chunk Max Pooling Method

open access: yesIEEE Access, 2020
It is of great importance to construct a convolutional neural network architecture in the frequency domain to explore the theory of deep learning in the frequency domain.
Jinhua Lin, Lin Ma, Jingxia Cui
doaj   +1 more source

B-spline neural network based single-carrier frequency domain equalisation for Hammerstein channels [PDF]

open access: yes, 2014
A practical single-carrier (SC) block transmission with frequency domain equalisation (FDE) system can generally be modelled by the Hammerstein system that includes the nonlinear distortion effects of the high power amplifier (HPA) at transmitter.
Hong, Xia, Chen, Sheng, Harris, Chris J.
core   +2 more sources

Frequency-domain precoding for single carrier frequency-division multiple access [PDF]

open access: yes, 2009
At present there is considerable interest in the use of single carrier frequency-division multiple access. This interest is justified by the inherent single carrier structure of the SC-FDMA scheme, which is more robust against phase noise and has a lower
Nix, AR, Noune, MB
core   +1 more source

Near-Optimum Iterative Multiuser Detection in Time-Frequency-Domain Spread Multicarrier DS-CDMA Systems [PDF]

open access: yes, 2010
In this contribution we propose and study a novel iterative time-frequency-domain (TF-domain) multiuser detector (MUD) for the multicarrier direct-sequence code-division multiple-access system employing both T-domain and F-domain spreading, which, for ...
Yang, Lie-Liang   +5 more
core   +2 more sources

Linearized frequency domain Landau-Lifshitz-Gilbert equation formulation

open access: yesAIP Advances, 2023
We present a general finite element linearized Landau-Lifshitz-Gilbert equation (LLGE) solver for magnetic systems under weak time-harmonic excitation field.
Zhuonan Lin, Vitaliy Lomakin
doaj   +1 more source

Frequency Domain Analysis of Load Frequency Control Using PIDTune Model Standard

open access: yesAndalas Journal of Electrical and Electronic Engineering Technology, 2023
The load frequency control system aims to regulate the frequency in the electric power system at a normal value with a predetermined tolerance limit. In practice, the load frequency control system does not always operate optimally, therefore a controller
Heru Dibyo Laksono   +2 more
doaj   +1 more source

Comparison of methodological approaches to identify economic activity regularities in transition economy

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2011
Presented paper focuses on consideration and evaluation of methodical approaches to analyze cyclical structure character of economic activity in transition economy.
Jitka Poměnková   +2 more
doaj   +1 more source

Nonlinearity-compensation-free optical frequency domain reflectometry based on electrically-controlled optical frequency sweep

open access: yesJournal of Electronic Science and Technology, 2021
A nonlinearity-compensation-free optical frequency domain reflectometry (OFDR) scheme is proposed and experimentally demonstrated based on the electrically-controlled optical frequency sweep.
Fan Yang   +4 more
doaj   +1 more source

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