Results 331 to 340 of about 2,499,047 (376)

Continuous-Variable Quantum Key Distribution With Self-Reference Detection and Discrete Modulation

IEEE Journal of Quantum Electronics, 2018
We proposed the optimized continuous-variable quantum key distribution protocol with self-reference and discrete modulation, which incorporates the advantages of both self-reference detection scenario and discrete modulation of quantum states. The impact
Ming Li, M. Cvijetic
semanticscholar   +1 more source

Laser beam propagation effects on secure key rates for satellite-to-ground discrete modulation CV-QKD.

Applied Optics, 2019
The increasing prevalence of satellite-to-ground laser communications necessitates unconditional security measures that so far can only be provided by quantum key distribution.
T. Wang, I. Djordjevic, J. Nagel
semanticscholar   +1 more source

Discrete Bandpass Modulation Methods

2021
Abstract 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 electroabsorption modulators with enhanced modulation depth

Journal of Lightwave Technology, 1996
In this paper, we present an investigation into factors that limited the median modulation depth of a batch of packaged discrete waveguide EA modulators to 23 dB at a wavelength of 1.55 /spl mu/m. Results from detailed measurements of the DC absorption and photocurrent spectra are used to show how stray parasitic light can perturb the absorption ...
D.G. Moodie, M.J. Harlow, M.J. Guy, S.D. Perrin, C.W. Ford, M.J. Robertson   +5 more
openaire   +1 more source

Multifunctional Modules of Discrete Automata

IFAC Proceedings Volumes, 1975
Abstract 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, A.Ya. Kalnberzin, V.P. Chapenko   +2 more
openaire   +1 more source

Discrete Chaotification of a Modulated Logistic System

International Journal of Bifurcation and Chaos, 2021
In the last few decades, the discrete chaotification of difference equations has gained the considerable attention of academicians and scholars due to its tremendous applications in many branches of science, such as cryptography, traffic control models, secure communications, weather forecasting and engineering.
Ashish, Cao, Jinde, Chugh, Renu
openaire   +2 more sources

Discrete and Profinite Modules

2000
A profinite ringΛ is an inverse limit of an inverse system {Λ i ,φ ij } of finite rings. We always assume that rings have an identity element, denoted usually by 1, and that homomorphisms of rings send identity elements to identity elements. A profinite ring Λ is plainly a compact, Hausdorff and totally disconnected topological ring; the converse is ...
Luis Ribes, Pavel Zalesskii
openaire   +1 more source

Continuous and Discrete Modules

1990
Continuous and discrete modules are, essentially, generalizations of infective and projective modules respectively. Continuous modules provide an appropriate setting for decomposition theory of von Neumann algebras and have important applications to C*-algebras.
Saad H. Mohamed, Bruno J. Müller
openaire   +1 more source

Performance of Discretization Modules

1985
The goal of the performance evaluations in this chapter is to show how the discretization error decreases as the grid is refined and more computer time is used. Standard error analyses estimate the discretization error as a function of the grid sizeN (i.e., for anN byN grid), or, respectively, the grid steph = 1 /N.
John R. Rice, Ronald F. Boisvert
openaire   +1 more source

On tau-discrete modules

Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi
An R-module M is said to be (quasi) τ-discrete if M is τ-lifting and has the property (D_2) (respectively, has the property (D_3)), where τ is a preradical in R-mod. It is shown that: (1) direct summands of a (quasi) τ-discrete module are (quasi) τ-discrete; (2) a projective module M is τ-discrete iff M/(τ(M)) is semisimple and τ(M) is QSL; (3) if a ...
Burcu Nişancı Türkmen, Ergül Türkmen   +1 more
openaire   +2 more sources