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Synthesis of a Nonlinear Cryptosystem based on the Synchronization of Chaotic Circuits via a One-Dimensional Signal
No full textSynchronization of Hyperchaotic Circuits using a One-Dimensional Signal: Robustness Analysis
No full textIn this paper an approach to achieve synchronization of hyperchaotic circuits using a proper one dimensional signal is presented. The robustness of the proposed synchromzation technique to parameter mismatch and to the presence of channel noise is investigated. The approach is effectively applied to hyperchaotic circuits constituted by two bidirectionally coupled Chua's oscillators
Synchronization of Hyperchaotic Circuits using a One-dimensional Signal: Robustness Analysis
No full text
On the Performance of CNNs for Associative Memories in Robot Vision Systems
No full textIn this paper a DTCNN-based vision system for pattern recognition in an artificial vision architecture is illustrated. The bipolar images, segmented in a preprocessing stage, constitute the input to a cellular associative memory in the recognizing stage of the vision system. The performance of DTCNNs designed as associative memories is confirmed by means of examples of detection and recognition of tools handled by a robot in an assembly line
Complete practical synchronization of hyperchaotic circuits via a scalar signal
No full textIn this paper an approach to achieve a complete practical synchronization of hyperchaotic circuits with parameter mismatch via an impulsive scalar signal is presented. The chosen scalar signal is constituted by a sequence 'of samples of selected state variables alternatively transmitted for identical time frames. The approach is effectively applied to hyperchaotic circuits with parameter mismatch constituted by two bidirectionally coupled Chua's oscillators
A novel approach to detect chaotic and periodic behaviours in fractional-order systems
No full textThis work illustrates a novel reliable test for detecting the presence of chaotic or periodic behaviours in nonlinear systems described by fractional-order differential equations. The method, which does not require phase space reconstruction of the fractional system, consists in: i) obtaining the data series, ii) constructing a random walktype process, iii) studying how the variance of the random walk scales with time. In order to show the potentiality of the approach, the test is successfully applied to the fractional Chua, Chen and Lorenz systems. © 2010 IEEE
Synthesis of a Nonlinear Cryptosystem based on the Synchronization of Chaotic Circuits via a One-Dimensional Signal
No full textIn this paper a method to synchronize chaotic cryptosystems via a scalar transmitted signal is proposed with the aim of enhancing the security of communication systems. The scalar signal is obtained as a suitable linear combination of state variables of the transmitter and encrypted signals. The suggested method is applied to bidirectionally coupled Chua's oscillators. Moreover, the performance of the proposed cryptosystem is investigated in the presence of channel noise. Simulation results are reported to confirm the validity of the suggested method
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