Results 111 to 120 of about 647,764 (285)

Influence of quadrature transformation imbalance on the noise immunity of signal reception with amplitude-phase shift keying

open access: yesРоссийский технологический журнал
Objectives. At the present time, amplitude-phase shift keyed (APSK) signals are actively used in satellite communication systems. In particular, they are applied in systems which operate in a limited radio frequency spectrum with increased data ...
G. V. Kulikov, X. Kh. Dang
doaj   +1 more source

Application of Radial Basis Function Method for Solving Nonlinear Integral Equations

open access: yesJournal of Applied Mathematics, 2014
The radial basis function (RBF) method, especially the multiquadric (MQ) function, was proposed for one- and two-dimensional nonlinear integral equations.
Huaiqing Zhang   +3 more
doaj   +1 more source

Circular $\theta$ -QAM: A Circle-Shaped QAM for Higher-Order Modulation

open access: yesIEEE Access, 2019
This paper proposes M-ary circular θ-quadrature amplitude modulation (CTQAM) for M = 2l, l ≥ 4, which is constructed by rearrangement of the signal points based on θ-QAM.
Seongjin Ahn, Dongweon Yoon
doaj   +1 more source

On Multiple Node Gaussian Quadrature Formulae [PDF]

open access: yesMathematics of Computation, 1978
Let μ 1 , … , μ k {\mu _1}, \ldots ,{\mu _k} be odd positive integers and n = Σ i = 1 k (
openaire   +1 more source

Solving, Estimating and Selecting Nonlinear Dynamic Economic Models without the Curse of Dimensionality [PDF]

open access: yes
A welfare analysis of a risky policy is impossible within a linear or linearized model and its certainty equivalence property. The presented algorithms are designed as a toolbox for a general model class. The computational challenges are considerable and
Viktor Winschel
core  

Error bounds for quadrature formulas near Gaussian quadrature

open access: yesJournal of Computational and Applied Mathematics, 1989
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brass, Helmut, Förster, Klaus-Jürgen
openaire   +1 more source

Receiving of direct-sequence spread spectrum signal with quadrature phase-shift keying in case of multiple access interference and internal Gaussian noise

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2015
Receiving of the broadband phase modulated signal with quadrature phase-shift keying in case of multiple access in-terference and internal Gaussian noise has been considered.
G. S. Nakhmanson, S. V. Kozlov
doaj  

Gaussian–Chebyshev Quadrature Approximation for Analyzing RIS-Assisted Communications

open access: yesIEEE Access
Analyzing the impact of cascaded channels in reconfigurable intelligent surfaces (RIS)-assisted wireless communication systems presents significant challenges, particularly due to the varying channel models associated with different links. In this paper,
Shuang Zhang, Jie Ren, Huilong Jin
doaj   +1 more source

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