Results 41 to 50 of about 770,509 (245)

Convergence of Chebyshev semi-iterative methods

open access: yesJournal of Computational and Applied Mathematics, 1986
Für stationäre iterative Verfahren zur Lösung von linearen Gleichungssystemen sind die Konvergenzbedingungen auf Grund des Spektralradius der Iterationsmatrix klar definiert. Dies trifft nicht zu für nichtstationäre Methoden. In der vorliegenden Arbeit wird für die Chebyshevsche semi-iterative Methode nach Varga oder Young die folgende hinreichende ...
Santos, Newton R., Linhares, Odelar L.
openaire   +2 more sources

An Efficient Iterative Scheme Using Family of Chebyshev’s Operations [PDF]

open access: yesMathematical Problems in Engineering, 2015
This paper presents an efficient iterative method originated from the family of Chebyshev’s operations for the solution of nonlinear problems. For this aim, the product operation matrix of integration is presented, and therefore the operation of derivative is developed by using Chebyshev wavelet functions of the first and second kind, initially. Later,
Seyed Hossein Mahdavi   +1 more
openaire   +3 more sources

Milestones in the Development of Iterative Solution Methods

open access: yesJournal of Electrical and Computer Engineering, 2010
Iterative solution methods to solve linear systems of equations were originally formulated as basic iteration methods of defect-correction type, commonly referred to as Richardson's iteration method.
Owe Axelsson
doaj   +1 more source

Effect of Kerr nonlinearity on signal and pump intensities in EDFA comprising single-mode step index fiber: Estimation by a simple but accurate mathematical formalism

open access: yesResults in Optics, 2022
The paper presents simple but accurate analytical expressions for the estimation of variation of signal and pump intensity with normalised radial distance in case of erbium doped fiber amplifier.
Tilak Mukherjee   +2 more
doaj   +1 more source

Modified Variational Iteration Algorithm-II: Convergence and Applications to Diffusion Models

open access: yesComplexity, 2020
Variational iteration method has been extensively employed to deal with linear and nonlinear differential equations of integer and fractional order. The key property of the technique is its ability and flexibility to investigate linear and nonlinear ...
Hijaz Ahmad   +4 more
doaj   +1 more source

Overview of Precoding Techniques for Massive MIMO

open access: yesIEEE Access, 2021
Massive multiple-input multiple-output (MIMO) is playing a crucial role in the fifth generation (5G) and beyond 5G (B5G) communication systems. Unfortunately, the complexity of massive MIMO systems is tremendously increased when a large number of ...
Mahmoud A. Albreem   +3 more
doaj   +1 more source

Numerical treatment of linear Volterra integro differential equations using variational iteration algorithm with collocation

open access: yesPartial Differential Equations in Applied Mathematics
To numerically solve the linear Volterra integro-differential equation, this study employs fourth-kind Chebyshev polynomials and the variational iteration algorithm with collocation, which is a combination of the variational iteration strategy and ...
Ikechukwu Jackson Otaide   +1 more
doaj   +1 more source

Performance Evaluation of Short Packet Communications in NOMA VLC Systems With Imperfect CSI

open access: yesIEEE Access, 2022
In this paper, we analyze and evaluate the impacts of imperfect channel state information (CSI) of the short packet communication (SPC) in a non-orthogonal multiple access (NOMA) visible light communication (VLC) system.
Giang N. Tran, Sunghwan Kim
doaj   +1 more source

An improvement of the Euler–Chebyshev iterative method

open access: yesJournal of Mathematical Analysis and Applications, 2006
The computation of a simple root of a sufficiently smooth scalar function \(f\) is discussed. The Newton method and the Euler-Chebyshev method are briefly presented. A method based on the Euler-Chebyshev method using a linear combination of function values of \(f\) with a convergence order of 5 is constructed.
Grau, Miquel, Díaz-Barrero, José Luis
openaire   +2 more sources

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