Results 11 to 20 of about 271,035 (288)

Chaotic communications over radio channels [PDF]

open access: yes, 2001
The real issues of communicating over radio channels with continuous time chaotic signals are addressed. Synchronized and nonsynchronized methods are assessed.
Williams, C
core   +1 more source

Discrete-time synchronization of chaotic systems for secure communication [PDF]

open access: yes, 2012
This paper deals with the problem of designing an exact nonlinear reconstructor for discrete-time chaotic encrypted messages. More precisely, we investigate the problem of designing a discrete-time dead-beat observer for nonlinear systems with unknown ...
Belmouhoub, Inaâm   +7 more
core   +1 more source

Observer-based secure communication using indirect coupled synchronization [PDF]

open access: yes, 2012
In this paper, an observer-based secure communication system composed of four chaotic oscillators is proposed. Observer based synchronization is achieved between two of these oscillators and employed as a transmitter and a receiver.
Ghassemlooy, Zabih   +5 more
core   +1 more source

Symbolic dynamics and chaotic synchronization [PDF]

open access: yesChaos Theory, 2011
Chaotic communications schemes based on synchronization aim to provide security over the conventional communication schemes. Symbolic dynamics based on synchronization methods has provided high quality synchronization (5). Symbolic dynamics is a rigorous way to investigate chaotic behavior with finite precision and can be used combined with information
Grácio, Clara   +2 more
openaire   +2 more sources

Implementation of a secure digital chaotic communication scheme on a DSP board [PDF]

open access: yes, 2010
In this paper, a new a secure communication scheme using chaotic signal for transmitting binary digital signals is proposed and which is then implemented on a Digital Signal Processor (DSP) board.
Ghassemlooy, Zabih   +7 more
core   +1 more source

Combination Synchronization of Three Different Fractional-Order Delayed Chaotic Systems

open access: yesComplexity, 2019
Time delay is a frequently encountered phenomenon in some practical engineering systems and introducing time delay into a system can enrich its dynamic characteristics. There has been a plenty of interesting results on fractional-order chaotic systems or
Bo Li, Xiaobing Zhou, Yun Wang
doaj   +1 more source

Dynamical behaviors, control and synchronization of a new chaotic model with complex variables and cubic nonlinear terms

open access: yesResults in Physics, 2017
A novel chaotic model with complex variables and cubic non-linear terms was proposed. The new system is a six dimensional continuous real autonomous chaotic system.
Emad E. Mahmoud, Madeha A. Al-Adwani
doaj   +1 more source

The importance of choosing attractors for optimizing chaotic communications [PDF]

open access: yes, 2004
In this brief, we consider methods to improve the performance of chaotic communication schemes. We study a system using a receiver which explicitly includes the presence of noise in the channel.
Williams, C   +3 more
core   +1 more source

Mixed Synchronization of Chaotic Financial Systems by Using Linear Feedback Control

open access: yesDiscrete Dynamics in Nature and Society, 2016
This paper deals with the mixed synchronization (coexistence of synchronization and antisynchronization) of two chaotic financial systems. Two mixed synchronization criteria for two chaotic financial systems are derived with a single controller and ...
Ke Ding, Xing Xu
doaj   +1 more source

Controlled chaotic systems for secure communications: FPGA synchronization and control [PDF]

open access: yesAIP Advances
To enhance secure communication efficiency, this paper proposes a novel four-dimensional single-scroll conservative chaotic system based on the Hamiltonian energy conservation theorem.
Chong Li, Liwen Xiao, Minxiu Yan
doaj   +1 more source

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