Results 21 to 30 of about 2,198,677 (243)

Two-stage Channel Frequency Response Estimation in OFDM Systems [PDF]

open access: yes, 2020
This paper proposes two-stage channel frequency response estimation algorithm in communication systems with OFDM technology. Algorithm is based on Kalman filter. Pilots from current and previous OFDM symbols are used for channel estimation.
Myronchuk, Oleksandr   +2 more
core   +2 more sources

Nonlinear error correction models [PDF]

open access: yesJournal of Time Series Analysis, 2002
The relationship between cointegration and error correction (EC) models is well characterized in a linear context, but the extension to the nonlinear context is still a challenge. Few extensions of the linear framework have been done in the context of nonlinear error correction (NEC) or asymmetric and time varying error correction models. In this paper,
Alvaro Escribano, Santiago Mira
openaire   +5 more sources

Additive and Non-additive Biomass Equations for Black Wattle

open access: yesFloresta e Ambiente, 2019
The objectives of this work were to propose additive equations for biomass components (stem and crown) and total biomass for black wattle (Acacia mearnsii De Wild.) and show the inconsistency of independently adjusted biomass equations.
Alexandre Behling   +6 more
doaj   +1 more source

Modeling error in approximate deconvolution model [PDF]

open access: yesCommunications in Mathematical Sciences, 2014
We investigate the assymptotic behaviour of the modeling error in approximate deconvolution model in the 3D periodic case, when the order $N$ of deconvolution goes to $\infty$. We consider successively the generalised Helmholz filters of order $p$ and the Gaussian filter.
Dunca, Argus Adrian, Lewandowski, Roger
openaire   +4 more sources

Transition Models with Measurement Errors [PDF]

open access: yesReview of Economics and Statistics, 1999
Les auteurs estiment un modèle de transition entre états sur le marché du travail qui tient compte des erreurs de classification dans les déclarations des états occupés. Ces erreurs de mesure viennent du caractère partiellement rétrospectif du questionnaire de l'enquête.
Magnac, Thierry, Visser, Michael
openaire   +5 more sources

Error Modeling in Stereo Navigation [PDF]

open access: yesIEEE Journal on Robotics and Automation, 1987
Computer Science ...
Matthies, Larry, Shafer, Steven A.
openaire   +1 more source

A posteriori modeling error estimates in the optimization of two-scale elastic composite materials [PDF]

open access: yes, 2017
The a posteriori analysis of the discretization error and the modeling error is studied for a compliance cost functional in the context of the optimization of composite elastic materials and a two-scale linearized elasticity model. A mechanically simple,
Conti, Sergio   +3 more
core   +2 more sources

Improved Modelling of Tool Tracking Errors by Modelling Dependent Marker Errors [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2013
Accurate understanding of equipment tracking error is essential for decision making in image guided surgery. For tools tracked using markers attached to a rigid body, existing error estimation methods use the assumption that the individual marker errors are independent random variables. This assumption is not valid for all tracking systems.
Thompson, Stephen   +3 more
openaire   +4 more sources

A Separated Calibration Method for Inertial Measurement Units Mounted on Three-Axis Turntables

open access: yesSensors, 2018
Inertial Measurement Unit (IMU) calibration accuracy is easily affected by turntable errors, so the primary aim of this study is to reduce the dependence on the turntable’s precision during the calibration process.
Chun-mei Dong   +3 more
doaj   +1 more source

Errors-in-Variables Models [PDF]

open access: yes, 2000
Errors-in-variables (EIV) models axe regression models in which the regres-sors axe observed with errors. These models include the linear EIV models, the nonlinear EIV models, and the partially linear EIV models. Suppose that we want to investigate the relationship between the yield (Y) of corn and available nitrogen (X) in the soil.
openaire   +3 more sources

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