CHAOTIC SYNCHRONIZATION AND SECURE COMMUNICATION VIA SLIDING-MODE OBSERVER

2008 ◽  
Vol 18 (01) ◽  
pp. 235-243 ◽  
Author(s):  
RAFAEL MARTINEZ-GUERRA ◽  
WEN YU
Keyword(s):  
Secure Communication ◽  
Chaotic Systems ◽  
Sliding Mode ◽  
Sliding Mode Observer ◽  
Van Der Pol Oscillator ◽  
Receiver Side ◽  
Van Der Pol ◽  
Chaotic Communication ◽  
Information Signal ◽  
Communication Scheme

Information signal embedded in a chaotic transmitter can be recovered by a receiver if it is a replica of the transmitter. In this paper, a new aspect of chaotic communication is introduced. A sliding-mode observer replaces the conventional chaotic system at the receiver side, which does not need information from the transmitter. So the uncertainties in the transmitter and the transmission line do not affect the synchronization, the proposed communication scheme is robust with respect to some disturbances and uncertainties. Three chaotic systems, Duffing equation, Van der Pol oscillator and Chua's circuit, are provided to illustrate the effectiveness of the chaotic communication.

Observer-Based Synchronization of Chaotic Systems with Both Parameter Uncertainties and Channel Noise

2014 ◽  
Vol 24 (07) ◽  
pp. 1450095 ◽  
Author(s):  
Xiu Jiang ◽  
Junqi Yang ◽  
Fanglai Zhu ◽  
Liyun Xu
Keyword(s):  
Secure Communication ◽  
Chaotic Systems ◽  
Sliding Mode ◽  
High Gain ◽  
High Order ◽  
Sliding Mode Observer ◽  
Channel Noise ◽  
Parameter Uncertainties ◽  
Reduced Order ◽  
Reduced Order Observer

This paper considers observer-based chaos synchronization and chaos-based secure communication problems for a class of uncertain chaotic systems with both parameter uncertainties and channel noise. First, by introducing an augmented vector, the original system is transformed into a new system which has no channel noise. Second, based on the concept of relative degree, an auxiliary drive signal vector is constructed so that the observer matching condition is satisfied. Third, a reduced-order observer is designed to estimate the states of the new augmented system. Then, a high-order high-gain sliding mode observer is considered to estimate the auxiliary drive signals and their derivatives exactly in a finite time. After this, the combination of the reduced-order observer and the high-order high-gain sliding mode observer is used as the receiver in the secure communication mechanism. And a kind of secure information recovery method is developed. Finally, a four-dimensional hyperchaos system is used as the simulation example to illustrate the effectiveness of the proposed methods.

Single channel secure communication scheme based on synchronization of fractional-order chaotic Chua’s systems

2017 ◽  
Vol 40 (13) ◽  
pp. 3651-3664 ◽  
Author(s):  
Maamar Bettayeb ◽  
Ubaid Muhsen Al–Saggaf ◽  
Said Djennoune
Keyword(s):  
Fractional Order ◽  
Secure Communication ◽  
Single Channel ◽  
Sliding Mode ◽  
Secret Message ◽  
Unknown Input ◽  
State Variables ◽  
Receiver Side ◽  
Estimation Errors ◽  
Communication Scheme

This paper deals with the design of a fractional-order chaotic secure communication scheme. On the emitter side, a fractional-order Chua’s system is used as the drive system to generate the encrypted message signal. The input secret message is modulated in the chaotic dynamics by inclusion rather than being directly added to the chaotic signal on the transmission line. A single channel is used for transmission of the encrypted signal. At the receiver side, a step-by-step sliding mode fractional-order chaotic observer subject to unknown input is proposed as the response system to obtain robust synchronization between the emitter and the receiver. After chaos synchronization is achieved at the receiver side, an estimation of the state variables is obtained and the plaintext is recovered. Finite-time convergence of both state and unknown input estimation errors is established. The efficiency of this proposed secure communication scheme is illustrated by numerical simulations.

A sliding mode observer based secure communication scheme

2005 ◽  
Vol 25 (3) ◽  
pp. 573-578 ◽  
Author(s):  
Maoyin Chen ◽  
Donghua Zhou ◽  
Yun Shang
Keyword(s):  
Secure Communication ◽  
Sliding Mode ◽  
Sliding Mode Observer ◽  
Communication Scheme

Decoding Digital Information from the Cascaded Heterogeneous Chaotic Systems

2003 ◽  
Vol 13 (06) ◽  
pp. 1599-1608 ◽  
Author(s):  
Chao Tao ◽  
Gonghuan Du ◽  
Yu Zhang
Keyword(s):  
Communication System ◽  
Communication Systems ◽  
Chaotic Systems ◽  
Digital Information ◽  
Chaotic Communication ◽  
New Approach ◽  
Communication Scheme ◽  
Simulation Results

In this paper, we propose a new approach to breaking down chaotic communication scheme by attacking its encryption keys. A remarkable advancement is that it can decode the hidden message exactly. This makes it become possible to break down some cascaded chaotic communication systems. We also decode digital information from the cascaded heterogeneous chaotic communication system and give the simulation results.

LAG PROJECTIVE STOCHASTIC PERTURBED SYNCHRONIZATION FOR CHAOTIC SYSTEMS AND ITS APPLICATION IN SECURE COMMUNICATION

2008 ◽  
Vol 22 (24) ◽  
pp. 4175-4188 ◽  
Author(s):  
YANG TANG ◽  
JIAN-AN FANG ◽  
LIANG CHEN
Keyword(s):  
Chaotic System ◽  
Secure Communication ◽  
Chaotic Systems ◽  
Stochastic Perturbation ◽  
Projective Synchronization ◽  
Unknown Parameters ◽  
Adaptive Feedback ◽  
Communication Scheme ◽  
Simulation Results ◽  
Feedback Method

In this paper, a simple and systematic adaptive feedback method for achieving lag projective stochastic perturbed synchronization of a new four-wing chaotic system with unknown parameters is presented. Moreover, a secure communication scheme based on the adaptive feedback lag projective synchronization of the new chaotic systems with stochastic perturbation and unknown parameters is presented. The simulation results show the feasibility of the proposed method.

A New 4D Four-Wing Memristive Hyperchaotic System: Dynamical Analysis, Electronic Circuit Design, Shape Synchronization and Secure Communication

2020 ◽  
Vol 30 (10) ◽  
pp. 2050147 ◽  
Author(s):  
Fei Yu ◽  
Shuai Qian ◽  
Xi Chen ◽  
Yuanyuan Huang ◽  
Li Liu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Secure Communication ◽  
Electronic Circuit ◽  
Mathematical Structure ◽  
Dynamical Analysis ◽  
Hyperchaotic System ◽  
Chen System ◽  
Information Signal ◽  
Communication Scheme ◽  
Good Agreement

In this paper, a simple four-wing chaotic attractor is first proposed by replacing the constant parameters of the Chen system with a periodic piecewise function. Then, a new 4D four-wing memristive hyperchaotic system is presented by adding a flux-controlled memristor with linear memductance into the proposed four-wing Chen system. The memristor mathematical structure model is simple and easy to implement. Dynamical analysis and numerical simulation of the memristive hyperchaotic system are carried out. Then, the electronic circuit of the hyperchaotic system is designed and implemented. The results of numerical simulation are in good agreement with the electronic circuit experiment. In addition, shape synchronization control for the 4D four-wing memristive hyperchaotic system is realized, and a communication system is designed by using the shape synchronization method. Finally, secure signal masking application is implemented on Matlab platform. In the developed secure communication scheme, the information signal overlaps with the chaotic masking signal, which improves the security of the system.

Matrix Projective Synchronization of Chaotic Systems and the Application in Secure Communication

2014 ◽  
Vol 644-650 ◽  
pp. 4216-4220
Author(s):  
Feng Liu
Keyword(s):  
Chaotic System ◽  
Secure Communication ◽  
Chaotic Systems ◽  
Chaotic Signal ◽  
Projective Synchronization ◽  
Information Signal ◽  
Simulation Results

First of all, we investigate adaptive matrix projective synchronization of the chaotic system. Finally, this method is applied to secure communication through improved chaotic masking. The information signal is mixed with the chaotic signal before being transmitted, and is recovered without distortion through the synchronized receiver. Simulation results show that the scheme has a good performance.

An Application of Chaotic Chua's System for Secure Chaotic Communication Based on Sliding Mode observer

2011 ◽  
Author(s):  
K. Kemih ◽  
M. Halimi ◽  
M. Ghanes ◽  
G. Zhang ◽  
Muhammed Hasan Aslan ◽  
...  
Keyword(s):  
Sliding Mode ◽  
Sliding Mode Observer ◽  
Chaotic Communication
Sign in / Sign up

Export Citation Format

Share Document