Results 91 to 100 of about 20,204 (210)
Broadband 1 × 3 Couplers With Variable Splitting Ratio Using Cascaded Step-Size MMI
IEEE Photonics Journal, 2018 In this paper, we propose and fabricated a novel scheme of SOI-based 1 × 3 coupler with variable splitting ratio. The coupler consists of two cascaded MMI with different sizes, and a wide range of splitting ratios from 1:0.1:1 to 1:18:1 can be ...
Ye Tian +6 more
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Symplectic difference systems: variable stepsize discretization and discrete quadratic functionals
Linear Algebra and its Applications, 2003 The authors consider the positivity and the nonnegativity of some discrete quadratic functionals with variable endpoints for variable stepsize symplectic difference systems. Seventeen theorems are given for the above-mentioned properties of such functionals in terms of conjugate intervals, conjoined bases, and implicit and explicit Riccati equations ...
Hilscher, Roman, Zeidan, Vera
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Low-complexity variable step-size sign algorithm based on Weibull distribution function
Dianxin kexue, 2018 The performance of the traditional second-order statistics based channel estimation methods degrade seriously in the presence of impulsive noises.In order to deal with this problem,a Weibull distribution function based variable step-size sign algorithm ...
Rui ZHANG +3 more
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Efficient preconditioning of the method of lines for solving nonlinear two-sided space-fractional diffusion equations [PDF]
, 2012 A standard method for the numerical solution of partial differential equations (PDEs) is the method of lines. In this approach the PDE is discretised in space using finite di fferences or similar techniques, and the resulting semidiscrete problem in ...
Moroney, Timothy, Yang, Qianqian
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EURASIP Journal on Advances in Signal Processing, 2009 Proportionate adaptive algorithms have been proposed recently to accelerate convergence for the identification of sparse impulse response. When the excitation signal is colored, especially the speech, the convergence performance of proportionate NLMS ...
Ligang Liu +3 more
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The Wavelet Transform-Domain LMS Adaptive Filter Algorithm with Variable Step-Size
Iranian Journal of Electrical and Electronic Engineering, 2017 The wavelet transform-domain least-mean square (WTDLMS) algorithm uses the self-orthogonalizing technique to improve the convergence performance of LMS.
M. Shams Esfand Abadi +2 more
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The starting procedure in variable-stepsize variable-order PECE codes
Journal of Computational and Applied Mathematics, 1994 A modified starting procedure is proposed which improves on the efficiency of PECE variable stepsize variable order difference formulas for the numerical integration of initial value problems for systems of ordinary differential equations. The new procedure is based on the examinations of the behavior of a bound on the error propagation.
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On the Stability of Variable Stepsize Rational Approximations of Holomorphic Semigroups [PDF]
Mathematics of Computation, 1994 We consider variable stepsize time approximations of holomorphic semigroups on general Banach spaces. For strongly A ( θ ) {\text {A}}(\theta ) -acceptable rational functions a general stability theorem is proved, which does not impose any constraint on the ratios between stepsizes.
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A Variable Step-Size FxLMS Algorithm for Nonlinear Feedforward Active Noise Control
SensorsActive noise control (ANC) represents an efficient technology for enhancing the noise suppression performance and ensuring the stable operation of multi-sensor systems through generative model-enhanced data representation and dynamic information fusion ...
Thi Trung Tin Nguyen +5 more
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Distributed Stochastic Optimization over Time-Varying Noisy Network
, 2020 This paper is concerned with distributed stochastic multi-agent optimization problem over a class of time-varying network with slowly decreasing communication noise effects. This paper considers the problem in composite optimization setting which is more
Ho, Daniel W. C., Yu, Zhan, Yuan, Deming
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