نتایج جستجو برای: ultra bessel sequence of subspaces

تعداد نتایج: 21192101  

Journal: :IEICE Transactions 2007
Kok Ann Donny Teo Shuichi Ohno

To describe joint timeand frequency-selective (doublyselective) channels in mobile broadband wireless communications, we propose to use the finite parameter model based on the same Bessel functions for each tap (Bessel model). An expression of channel estimation mean squared error (MSE) based on the finite parameter models in Orthogonal Frequency Division Multiplexing (OFDM) systems is derived....

Journal: :Ultramicroscopy 2016
Vincenzo Grillo Jérémie Harris Gian Carlo Gazzadi Roberto Balboni Erfan Mafakheri Mark R Dennis Stefano Frabboni Robert W Boyd Ebrahim Karimi

We report a systematic treatment of the holographic generation of electron Bessel beams, with a view to applications in electron microscopy. We describe in detail the theory underlying hologram patterning, as well as the actual electron-optical configuration used experimentally. We show that by optimizing our nanofabrication recipe, electron Bessel beams can be generated with relative efficienc...

Journal: :Appl. Math. Lett. 2003
Jorge Sastre Lucas Jódar

h thii paper, an asymptotic expression of the incomplete gamma matrix function and integral expressions of Bessel matrix functions are given. Results are applied to study the asymptotic behavior of the modified Bessel function. @ 2003 Elsevier Science Ltd. All rights reserved. Keywords-Bessel function, Incomplete gamma function, Asymptotics.

2016
ÁRPÁD BARICZ SAMINATHAN PONNUSAMY SANJEEV SINGH

In this paper some Turán type inequalities for the general Bessel function, monotonicity and bounds for its logarithmic derivative are derived. Moreover we find the series representation and the relative extrema of the Turánian of general Bessel functions. The key tools in the proofs are the recurrence relations together with some asymptotic relations for Bessel functions.

Journal: :Optics express 2015
A Grinenko M P MacDonald C R P Courtney P D Wilcox C E M Demore S Cochran B W Drinkwater

We demonstrate the generation of Bessel beams using an acousto-optic array based on a liquid filled cavity surrounded by a cylindrical multi-element ultrasound transducer array. Conversion of a Gaussian laser mode into a Bessel beam with tunable order and position is shown. Also higher-order Bessel beams up to the fourth order are successfully generated with experimental results very closely ma...

Journal: :Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics 1991

An atomic decomposition is considered in Banach space.  A method for constructing an atomic decomposition of Banach  space, starting with atomic decomposition of  subspaces  is presented. Some relations between them are established. The proposed method is used in the  study  of the  frame  properties of systems of eigenfunctions and associated functions of discontinuous differential operators.

Journal: :Physical review applied 2022

The nitrogen-vacancy center (NVC) in a diamond is promising platform for Floquet engineering. Using the synchronized readout, we investigate NVC's state driven by Carr-Purcell sequence large-amplitude ac magnetic field. We observe dynamics represented as Bessel functions up to 211th order systematic and quantitative agreement with theoretical model. Furthermore, numerical calculations show that...

2012
Larry Glasser Karen T. Kohl Christoph Koutschan Victor H. Moll Armin Straub

This paper is part of the collection initiated in [12], aiming to evaluate the entries in [8] and to provide some context. This table contains a large variety of entries involving the Bessel functions. The goal of the current work is to evaluate some entries in [8] where the integrand is an elementary function and the result involves the so-called modified Bessel function of the second kind, de...

Journal: :Complex Analysis and Operator Theory 2021

We characterize the normal operators A on $$\ell ^2$$ and elements $$a^i \in \ell , with $$1\le i\le m$$ such that sequence $$\begin{aligned} \{ A^n a^1, \ldots a^m \}_{n\ge 0} \end{aligned}$$ is a frame. The characterization makes strong use of pseudo-hyperbolic metric $$ {{\mathbb {D}}} given in terms backward shift invariant subspaces $$H^2( )$$ associated to finite products interpolating Bl...

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