Results 221 to 230 of about 50,253 (264)
Some of the next articles are maybe not open access.
Analysis of non-linear distortions on MC-CDMA
ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220), 2002We analyze the influence of the effects of the non-linearity due to high power amplifiers in MC-CDMA scheme using BPSK modulation. The results are compared to those obtained with the classical BPSK modulated DS-CDMA scheme. It is shown that without predistortion the total degradation for the up-link of a cellular mobile communications system is about 2
Fazel, K., Kaiser, S.
openaire +2 more sources
Rheograph linear-distortion estimation
Biomedical Engineering, 19791. Estimators for the dynamic error of a rheograph can be used in optimizing and standardizing the major metrological characteristics.
V. M. Bol'shov, V. N. Fedoseev
openaire +1 more source
The Correction of Signals Distorted by Linear Apparatus
Proceedings of the Physical Society, 1961In a previous paper by Flynn and Seymour a technique was developed whereby a type of distortion produced by linear apparatus could be corrected rapidly and efficiently to obtain a `true' output signal. The distortion considered was not the most general linear distortion, and several cases of practical importance were therefore excluded.
openaire +2 more sources
The Distortion of Linearizing Transforms
2016Unconstrained linear regression, see Equations 1.1 to 1.8, has some desired attributes over nonlinear optimization. Linear regression is guaranteed to find a solution, to find a unique solution, and to find a solution within a time interval that can be specified based on problem dimension.
openaire +1 more source
Distortion power in linear and non-linear systems
International Journal of Electronics, 1990A new determination of the distortion power in linear and non-linear systems with non-sinusoidal voltage and/or current is proposed. Existence of the active and reactive components of distortion power for linear and non-linear systems is shown. The distortion power components may exist even in pure resistive or pure reactive systems.
openaire +1 more source
Intersymbol interference due to linear and nonlinear distortion
IEEE Transactions on Communications, 1996The paper provides a recursion model for the calculation of the probability density function (pdf) of intersymbol interference (ISI) which is caused by the combined effect of linear channel dispersion and of nonlinear distortion. The nonlinearity introduces statistical interdependencies between the interfering symbols and these dependencies are ...
Kurt Metzger, Rolf Valentin
openaire +1 more source
Linear distortional beam theory
Journal of Constructional Steel Research, 1993Abstract The present linear beam theory describes the distortional behaviour of a beam with an open cross-section. The theory accounts for cross-sectional distortion and is thus an improvement of the classic theory. The new theory has been used for an eccentrically loaded and simply-supported U-beam, where the rotation of the beam has been ...
openaire +1 more source
Triple features for linear distorted images
1995The theory of trace transformations and triple features is extended to a new area. In previous papers it was introduced for conformai distortion of images. Many triple features of images are proposed making use of this new theory. Some of the features are independent of shifting, rotating and shrinking images.
openaire +1 more source
Distortion in Linear Passive Networks
Proceedings of the IRE, 1951It is well known that distortion is suffered by a modulated wave in passing through a practical transmission network. The increasing use of frequency modulation in television relays and other uses where high fidelity is important has made the problem of FM distortion of current interest.
openaire +1 more source
Characterizing Architectural Distortion in Mammograms by Linear Saliency
Journal of Medical Systems, 2016Architectural distortion (AD) is a common cause of false-negatives in mammograms. This lesion usually consists of a central retraction of the connective tissue and a spiculated pattern radiating from it. This pattern is difficult to detect due the complex superposition of breast tissue.
Fabián R. Narváez +4 more
openaire +2 more sources