Results 101 to 110 of about 37,103 (214)

Optimization of the Approximate Integration Formula Using the Quadrature Formula

International Journal of Analysis and Applications
The article explores Sard’s problem of constructing optimal quadrature formulas in the space W(4,0)2(0,1) by using Sobolev’s method. This problem involves two steps: first, calculating the norm of the error functional, and then finding the minimum of this norm by the coefficients of the quadrature formulas.
Kh.M. Shadimetov, A.K. Boltaev
openaire   +1 more source

Direct detection with an optimal transfer function: toward the electrical spectral efficiency of coherent homodyne detection

Opto-Electronic Science
Complex-valued double-sideband direct detection (DD) can reconstruct the optical field and achieve a high electrical spectral efficiency (ESE) comparable to that of a coherent homodyne receiver, and DD does not require a costly local oscillator laser ...
Xingfeng Li, Jingchi Li, Xiong Ni, Hudi Liu, Qunbi Zhuge, Haoshuo Chen, William Shieh, Yikai Su   +7 more
doaj   +1 more source

Error Analysis for Semilinear Stochastic Subdiffusion with Integrated Fractional Gaussian Noise

Mathematics
We analyze the error estimates of a fully discrete scheme for solving a semilinear stochastic subdiffusion problem driven by integrated fractional Gaussian noise with a Hurst parameter H∈(0,1).
Xiaolei Wu, Yubin Yan
doaj   +1 more source

Analysis of Multi-User-Based UAV System With Outdated CSI

IEEE Open Journal of the Communications Society
In this paper, we investigate the performance of multiple-input and multiple-output (MIMO) unmanned air vehicle (UAV) based multi-user communication systems over generalized Nakagami- $m$ fading channels subject to channel feedback delays. The impact of
Parvez Shaik, Cihat Kececi, Kamal K. Garg, Muhammad Ismail, Erchin Serpedin   +4 more
doaj   +1 more source

L1 Scheme for Semilinear Stochastic Subdiffusion with Integrated Fractional Gaussian Noise

Fractal and Fractional
This paper considers a numerical method for solving the stochastic semilinear subdiffusion equation which is driven by integrated fractional Gaussian noise and the Hurst parameter H∈(1/2,1).
Xiaolei Wu, Yubin Yan
doaj   +1 more source

Hierarchical QAM and Inter-Layer FEC for Multi-View Video Plus Depth Format in Two-Way Relay Channels

Applied Sciences
This paper presents an enhanced method for the transmission of 3D video in the Multi-view Video plus Depth (MVD) format over Two-Way Relay Channels (TWRC).
Dongho You, Sung-Hoon Kim, Dong Ho Kim
doaj   +1 more source

Decay analysis of bivariate Chebyshev coefficients for functions with limited regularity

Results in Applied Mathematics
The Chebyshev polynomial approximation is a useful tool to approximate smooth and non-smooth functions. In fact, for a sufficiently smooth function, the partial sum of Chebyshev series expansion provides optimal polynomial approximation.
Akansha
doaj   +1 more source

Gaussian Q Function Approximation in Wireless Communication System’s Design: A Gradient-Based Optimization Approach

IEEE Access
This paper proposes a novel iterative gradient-based optimization approach aimed at achieving more precise and streamlined approximations for the Gaussian Q function—an essential element in communication system’s design.
Leuva Bhumika Ranchhodbhai, Dharmendra Sadhwani   +1 more
doaj   +1 more source

Optimal Quadrature Formulae [PDF]

The Computer Journal, 1967
openaire   +2 more sources

On universal optimal quadrature formulae [PDF]

Applications of Mathematics, 1968
openaire   +1 more source