Results 31 to 40 of about 5,137,492 (319)

Blind Receiver Design for OFDM Systems Over Doubly Selective Channels [PDF]

open access: yes, 2007
We develop blind data detectors for orthogonal frequency-division multiplexing (OFDM) systems over doubly selective channels by exploiting both frequency-domain and time-domain correlations of the received signal. We thus derive two blind data detectors:
Cui, Tao, Tellambura, Chintha
core   +1 more source

Broadband Beamspace DOA Estimation: Frequency-Domain and Time-Domain Processing Approaches

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
Frequency-domain and time-domain processing approaches to direction-of-arrival (DOA) estimation for multiple broadband far field signals using beamspace preprocessing structures are proposed.
Yan Shefeng
doaj   +2 more sources

High-order, Dispersionless "Fast-Hybrid" Wave Equation Solver. Part I: $\mathcal{O}(1)$ Sampling Cost via Incident-Field Windowing and Recentering [PDF]

open access: yes, 2020
This paper proposes a frequency/time hybrid integral-equation method for the time dependent wave equation in two and three-dimensional spatial domains.
Anderson, Thomas G.   +2 more
core   +2 more sources

A robust and low frequency stable time domain PMCHWT equation [PDF]

open access: yes, 2015
The time domain PMCHWT equation models transient scattering by piecewise homogeneous dielectrics. After discretization, it can be solved using the marching-on-in-time algorithm.
Andriulli, Francesco P   +2 more
core   +3 more sources

Universal compressive tomography in the time-frequency domain [PDF]

open access: yesOptica, 2021
Jano Gil-Lopez,1 Yong Siah Teo,2,* Syamsundar De,1 Benjamin Brecht,1 Hyunseok Jeong,2 Christine Silberhorn,1 AND Luis L. Sánchez-Soto3,4 IntegratedQuantumOptics Group, Institute for Photonic QuantumSystems (PhoQS), Paderborn University,Warburger Straße ...
J. Gil-Lopez   +6 more
semanticscholar   +1 more source

Frequency-Domain Streak Camera And Tomography For Ultrafast Imaging Of Evolving And Channeled Plasma Accelerator Structures [PDF]

open access: yes, 2010
We demonstrate a prototype Frequency Domain Streak Camera (FDSC) that can capture the picosecond time evolution of the plasma accelerator structure in a single shot. In our prototype Frequency-Domain Streak Camera, a probe pulse propagates obliquely to a
Dong, P.   +5 more
core   +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

Time and frequency domain in the business cycle structure

open access: yesAgricultural Economics (AGRICECON), 2012
The presented paper deals with the identification of cyclical behaviour of business cycle from the time and frequency domain perspective. Herewith, methods for obtaining the growth business cycle are investigated - the first order difference, the ...
Jitka POMĚNKOVÁ, Roman MARŠÁLEK
doaj   +1 more source

Harmonic Simulation Methods in Power Systems

open access: yesIteckne, 2020
The harmonic simulation on power systems can be performed using methodologies which are focused on time and frequency domain. The solution of power systems under harmonics require a complete and detailed solution of grid equations, and consequently ...
Carlos Barrera, Alex Valenzuela
doaj   +1 more source

Time-Domain and Monostatic-like Frequency-Domain Methods for Bistatic SAR Simulation

open access: yesSensors, 2021
In recent years, an increasing interest has been devoted to bistatic SAR configurations, which can be effectively used to improve system performance and/or to increase the amount of physical information retrievable from the observed scene.
Gerardo Di Martino   +3 more
doaj   +1 more source

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