Journal ArticleDOI
Fast communication: Discrete-time chaotic systems synchronization performance under additive noise
Marcio Eisencraft,A. M. Batista +1 more
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TLDR
Results are presented of a comparison between synchronization error due to additive Gaussian noise when the transmitter and receiver are implemented by single or coupled maps.About:
This article is published in Signal Processing.The article was published on 2011-08-01. It has received 12 citations till now. The article focuses on the topics: Synchronization of chaos & Gaussian noise.read more
Citations
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Journal ArticleDOI
Design and FPGA implementation of a wireless hyperchaotic communication system for secure real-time image transmission
TL;DR: The obtained experimental results show the relevance of the idea of combining XBee (Zigbee or Wireless Fidelity) protocol, known for its high noise immunity, to secure hyperchaotic communications.
Journal ArticleDOI
Chaos-based communication systems in non-ideal channels
Marcio Eisencraft,Renato D. Fanganiello,J.M.V. Grzybowski,Diogo C. Soriano,Romis Attux,Antonio M. Batista,Elbert E. N. Macau,Luiz Henrique Alves Monteiro,Luiz Henrique Alves Monteiro,João Marcos Travassos Romano,Ricardo Suyama,Takashi Yoneyama +11 more
TL;DR: This paper succinctly describes techniques to counter the effects of finite bandwidth, additive noise and delay in the communication channel to make chaos-based communication systems attain lower levels of BER in non-ideal environments.
Journal ArticleDOI
Correlation and spectral properties of chaotic signals generated by a piecewise-linear map with multiple segments
TL;DR: This work deduce analytical expressions for autocorrelation sequence, power spectral density and essential bandwidth of chaotic signals generated by a piecewise-linear map, with multiple segments.
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First Experimental Solution for Channel Noise Sensibility in Digital Chaotic Communications
TL;DR: The proposed solution to the high channel noise sensibility problem of digital chaotic communications by avoiding disruption of the slave/receiver dynamics by injecting the driving signal is tested and validated through experimental realization of a wireless hyperchaotic communication system based on ZigBee communication protocol.
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On the Performance of a Digital Chaos-Based Communication System in Noisy Channels
Greta A. Abib,Marcio Eisencraft +1 more
TL;DR: This work evaluates the performance in terms of Bit Error Rate (BER) of a binary communication system, based on chaotic synchronization, when white gaussian noise is added to the transmitted signal and proposes an encoding function that allows controlling the trade-off between how apparent is the message in the transmitted chaotic signal and BER performance.
References
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Journal ArticleDOI
Chaos in phase-locked loops
TL;DR: In this article, the chaotic behavior of phase-locked loops (PLL) in tracking a received signal whose frequency is varying linearly with time is studied, described by a third-order nonlinear autonomous equation and the Lyapunov exponents and dimension of the system are calculated to confirm the chaotic phenomenon.
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Chaos and bifurcation in a third-order phase locked loop
Bassam Harb,Ahmad Harb +1 more
TL;DR: In this paper, the chaos induced in a new type of phase locked loop (PLL) having a second-order loop filter is investigated, where the system under consideration is modeled as a third-order autonomous system with sinusoidal phase detector characteristics.
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Statistical analysis of a watermarking system based on Bernoulli chaotic sequences
Sofia Tsekeridou,V. Solachidis,Nikos Nikolaidis,Athanasios Nikolaidis,Anastasios Tefas,Ioannis Pitas +5 more
TL;DR: The aim of the paper is to introduce the n-way Bernoulli shift generated chaotic watermarks and theoretically contemplate their properties with respect to the detection reliability and to theoretically establish their potential superiority against the widely used (pseudo-)random watermarks.
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Synchronization of Discrete-Time Chaotic Systems in Bandlimited Channels
TL;DR: This work considers a discrete-time master-slave system that synchronizes despite channel bandwidth limitations and an allied communication system and introduces a digital filter that limits the spectral content of the feedback loop responsible for producing the transmitted signal.
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Chaos in the APFM nonlinear adaptive filter
TL;DR: It is illustrated that both frequency and amplitude of the input components have effect on the filter characteristics which can lead the filter to behave chaotically for some values of these parameters.