Journal ArticleDOI
Statistical aspects of chaotic maps with negative dependence in a communications setting
A. J. Lawrance,N. Balakrishna +1 more
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It is shown that a class of tailed shift chaotic maps can be designed with substantial negative dependence, both linear and non‐linear, and that extended Perron–Frobenius theory gives their dependence structure.Abstract:
Summary. It is shown that a class of tailed shift chaotic maps can be designed with substantial negative dependence, both linear and non-linear, and that extended Perron-Frobenius theory gives their dependence structure. Using a simplified chaos-based communication system, it is shown that chaotic spreading sequences with low kurtosis and negative non-linear mean-centred quadratic autocorrelations can improve bit-received accuracy. This quadratic form of non-linear dependence is investigated and shown to be statistically sensible.read more
Citations
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Journal ArticleDOI
Exact calculation of bit error rates in communication systems with chaotic modulation
A.J. Lawrance,G. Ohama +1 more
TL;DR: The paper explores the calculation of exact bit error rates (BERs) for some single-user chaotic-shift-keying communications systems, in contrast to approximate Gaussian-based approximations in current use, and the derivation of likelihood optimal bit decoders which can be superior to correlation decoder.
Book ChapterDOI
Prediction of Long-Memory Time Series: A Tutorial Review
R. J. Bhansali,Piotr Kokoszka +1 more
TL;DR: Two different approaches, called Type-I and Type-II, to linear least-squares prediction of a long-memory time series are distinguished.
Journal ArticleDOI
Chaos Communication Performance: Theory and Computation
TL;DR: The multi-user coherent antipodal chaos shift keying system is studied and evaluated in its coherent form, in the sense of perfect synchronisation between transmitted and received chaotic sequences.
Journal ArticleDOI
Confidence intervals and hypothesis testing for the Permutation Entropy with an application to epilepsy
TL;DR: In this article, a parametric bootstrap methodology using a symbolic representation of the time series to obtain the distribution of the Permutation Entropy estimator is proposed, which is used to compare normal and preictal EEG signals.
Journal ArticleDOI
Binary Time Series Generated by Chaotic Logistic Maps
A. J. Lawrance,Rodney C. Wolff +1 more
TL;DR: Stochastic pairwise dependence structures in binary time series obtained from discretised versions of standard chaotic logistic maps are examined, motivated by applications in communications modelling which make use of so-called chaotic binary sequences.
References
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Journal ArticleDOI
Chaotic complex spreading sequences for asynchronous DS-CDMA. I. System modeling and results
TL;DR: In this paper, the authors evaluated the impact of chaotic spreading codes on communication systems with asynchronous code division multiple access (CDMA) using a truncated and quantized chaotic time series.
Journal ArticleDOI
Statistics of chaotic binary sequences
Tohru Kohda,Akio Tsuneda +1 more
TL;DR: A simple sufficient condition for such a class of maps to produce a fair Bernoulli sequence, that is, a sequence of independent and identically distributed (i.i.d.) binary random variables.
Reference BookDOI
Chaotic Electronics in Telecommunications
TL;DR: Introduction to DS- CDMA Chaos-Based Asynchronous DS-CDMA systems, Noise Generation in Silicon Robustness of Chaos in Analog Implementations, and Schemes for Communicating with Chaotic Signals.
Journal ArticleDOI
Chaotic complex spreading sequences for asynchronous DS-CDMA. Part II. Some theoretical performance bounds
TL;DR: Mazzini et al. as discussed by the authors evaluated the impact of chaotic spreading codes on communication systems with asynchronous Code Division Multiple Access (CDMA) and provided analytical bounds on the expected partial cross correlation between spreading sequences obtained by quantizing and repeating a chaotic time series.
Journal ArticleDOI
Robust communication based on chaotic spreading sequences
Ulrich Parlitz,S. Ergezinger +1 more
TL;DR: It is demonstrated that this scheme may not only be used for masking and encoding but is also robust with respect to different types of external interferences.
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Exact calculation of bit error rates in communication systems with chaotic modulation
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