Results 181 to 190 of about 649 (213)
Some of the next articles are maybe not open access.
Modules over discrete valuation domains. I
Journal of Mathematical Sciences, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Krylov, Petr Andreevich +1 more
openaire +3 more sources
On the effect of discreteness in the modulation instability for the Salerno model
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2017A Salerno model with first-and second-neighbor couplings is derived for the nonlinear transmission lines. We revisit the problem of modulation instability in the Salerno model. We derive the expression for the modulation instability gain and use them to explore the role of discreteness.
Ndzana, F., Mohamadou, A.
openaire +4 more sources
Discrete-Modulated CVQKD with Composable Security
Optical Fiber Communication Conference (OFC) 2025We report the first continuous-variable quantum key distribution experiment using four states that utilizes a composable security proof to generate a secret key fraction of 0.033 bits/symbol over a 10 km fiber channel, while providing security against collective attacks.
Adnan A. E. Hajomer +8 more
openaire +2 more sources
Multifunctional Modules of Discrete Automata
IFAC Proceedings Volumes, 1975Abstract The multifunctional logic modules for discrete automata being set from without to perform the required logical function from the given list of functions are considered. The methods for synthesizing the structure of such modules, taking into account the requirement of minimizing the number of their pins, are investigated.
E.A. Yakubaitis +2 more
openaire +1 more source
Discrete Power Devices and Power Modules
2016Methods devoted to electrothermal simulation are presented as a useful tool for both the analysis and characterization of behavior of power semiconductor devices standing alone, and/or coupled in integrated circuits or power modules. First of all the implementation of a devised flow to generate the layer-based electrothermal PSpice model of an IPEM ...
Chvála A +8 more
openaire +2 more sources
Discrete coactions on Hilbert C*-modules
Mathematical Proceedings of the Cambridge Philosophical Society, 1996In this paper, we will investigate discrete coactions on Hilbert C*-modules. In particular, we obtain a one-to-one correspondence between Hilbert C*-modules with discrete coactions and Hilbert C*-modules over the crossed products of the original C*-algebras which satisfies some nice properties (see 3·6 and 3·7).
openaire +1 more source
1993
The continuous nonlinear Schrodinger equation has both nonintegrable and integrable discretizations. In this paper we consider the question of whether these discretizations are equivalent as models for modulated waves on nonlinear lattices. The evolution equations for the envelope of discrete modulated waves on the sine-Gordon lattice are derived by ...
openaire +1 more source
The continuous nonlinear Schrodinger equation has both nonintegrable and integrable discretizations. In this paper we consider the question of whether these discretizations are equivalent as models for modulated waves on nonlinear lattices. The evolution equations for the envelope of discrete modulated waves on the sine-Gordon lattice are derived by ...
openaire +1 more source
Discrete Bandpass Modulation Methods
2021Abstract This chapter presents mathematical models of discrete baseband and bandpass communication systems based on binary phase-shift keying, quaternary phase-shift keying, frequency-shift keying, and quadrature amplitude modulation. The operation of intermediate-frequency systems where all processing is performed in the discrete-time ...
openaire +1 more source
Discrete Systems as Petri Modules
2021This chapter is about putting the Petri modules together in a modular Petri net. This chapter consists of three groups of sections. In the first section, nine blocks are introduced as the basic building blocks of a discrete system. The second section introduces six matrices, such as Adjacency, Laplacian, Reachability, Rader’s, Connection, and Component
openaire +1 more source
Perfect discrete multitone modulation with optimal transceivers
IEEE Transactions on Signal Processing, 2000Previously, discrete Fourier transform (DFT)-based discrete multitone modulation (DMT) systems have been widely applied to various applications. In this paper, we study a broader class of DMT systems using more general unitary matrices instead of DFT matrices.
Yuan-Pei Lin, See-May Phoong
openaire +2 more sources