Output frequency response function-based analysis for nonlinear Volterra systems [PDF]
, 2007 Analysis of nonlinear systems has been studied extensively. Based on some recently developed results, a new systematic approach to the analysis of nonlinear Volterra systems in the frequency domain is proposed in this paper, which provides a novel ...
Bendat +29 more
core +1 more source
Spectrum-Efficient Triple-Layer Hybrid Optical OFDM for IM/DD-Based Optical Wireless Communications [PDF]
, 2020 In this paper, a triple-layer hybrid optical orthogonal frequency division multiplexing (THO-OFDM) for intensity modulation with direct detection (IM/DD) systems with a high spectral efficiency is proposed.
Ghassemlooy, Zabih +5 more
core +2 more sources
Continuous Time Frequency Domain Analysis of Ф-OTDＲ Nonstationary Signals
Journal of Harbin University of Science and Technology, 2021 Most of the natural vibration signals are stationary and modulated by the interference light signal of the distributed optical fiber vibration sensing system.
XU Tao, LI Li
doaj +1 more source
Frequency Domain Analysis of Tractor Tyre Enveloping Properties
International Journal of Engineering and Management Sciences, 2019 Main source of vibration excitation for off-road vehicles are ground profile undulations. Most unprepared terrains are characterized by wavelength of unevenness that is of the order of magnitude of the contact length between tire and ground, so that ...
Boris Stojic
doaj +1 more source
Analysis and application of digital spectral warping in analog and mixed-signal testing [PDF]
, 2003 Spectral warping is a digital signal processing transform which shifts the frequencies contained within a signal along the frequency axis. The Fourier transform coefficients of a warped signal correspond to frequency-domain 'samples' of the original ...
Allen, W. R. M. +3 more
core +1 more source
Random Fatigue Analysis of Drill-Strings in Frequency Domain
MATEC Web of Conferences, 2017 Predicting fatigue damage induced by vibrations is of benefit to oil and gas industry. In this paper a spectral method is developed to estimate the damage of vibration, including both deterministic and random vibration, on the fatigue life of ...
Zheng JiaHao, Yang Jianming, Yang Ping
doaj +1 more source
Characterization of Frequency Domains of Bandlimited Frame Multiresolution Analysis
Mathematics, 2021 Framelets have been widely used in narrowband signal processing, data analysis, and sampling theory, due to their resilience to background noise, stability of sparse reconstruction, and ability to capture local time-frequency information.
Zhihua Zhang
doaj +1 more source
Design and Embedded Implementation of Secure Image Encryption Scheme Using DWT and 2D-LASM
Entropy, 2022 In order to further improve the information effectiveness of digital image transmission, an image-encryption algorithm based on 2D-Logistic-adjusted-Sine map (2D-LASM) and Discrete Wavelet Transform (DWT) is proposed.
Heping Wen +13 more
doaj +1 more source
Constructing Gravitational Waves from Generic Spin-Precessing Compact Binary Inspirals [PDF]
, 2017 The coalescence of compact objects is one of the most promising sources of gravitational waves for ground-based interferometric detectors, such as advanced LIGO and Virgo.
Chatziioannou, Katerina +3 more
core +4 more sources
Complex Independent Component Analysis of Frequency-Domain Electroencephalographic Data
, 2003 Independent component analysis (ICA) has proven useful for modeling brain and electroencephalographic (EEG) data. Here, we present a new, generalized method to better capture the dynamics of brain signals than previous ICA algorithms.
Amari +24 more
core +5 more sources