Journal ArticleDOI
Pseudo-chaotic time hopping for UWB impulse radio
TLDR
A pseudo-chaotic modulation suitable for ultrawide-bandwidth impulse-radio communication systems, based upon controlling the symbolic dynamics of a chaotic map for encoding the digital information to be transmitted.Abstract:
In this paper, we propose a pseudo-chaotic modulation suitable for ultrawide-bandwidth impulse-radio communication systems. The coding scheme is based upon controlling the symbolic dynamics of a chaotic map for encoding the digital information to be transmitted. The pseudo-chaotic time hopping enhances the spread-spectrum characteristics of the system, by removing most periodic components from the transmitted signal. A maximum-likelihood detector for the proposed scheme is presented and its scalability features are illustrated. Finally, theoretical performance bounds for both soft and hard Viterbi decoding are derived and compared with the simulation results.read more
Citations
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An ultra-wideband transceiver architecture for low power, low rate, wireless systems
I.D. O'Donnell,R.W. Brodersen +1 more
TL;DR: The system architecture, modeling, and design constraints for a baseband, integrated, CMOS, impulse ultra-wideband transceiver targeting very low power consumption on the order of 1 mW are presented.
Journal ArticleDOI
Discrete Chaos-I: Theory
TL;DR: A definition of the discrete Lyapunov exponent for an arbitrary permutation of a finite lattice, which measures the local (between neighboring points) average spreading of the system for discrete-time dynamical systems and proves that, for large classes of chaotic maps, the corresponding discrete Lyapsin exponent approaches the largest Lyap unov exponent of a chaotic map when Mrarrinfin.
Journal ArticleDOI
Introduction to communications engineering
TL;DR: In this paper, the authors present a model for the communication system models of baseband waveforms, subcarriers, and multiplexing in the context of fiber optic networks.
Journal ArticleDOI
Digital Communication using Chaos and Nonlinear Dynamics
TL;DR: In this article, the authors reviewed the challenges that arise due to noise and other distortions occurring in the communication channel and ways to improve the noise characteristics of the synchronization and to make chaos communication robust enough to work with realistic channels are discussed.
Journal ArticleDOI
A Novel Hybrid Spiking Neuron: Bifurcations, Responses, and On-Chip Learning
S Hashimoto,Hiroyuki Torikai +1 more
TL;DR: It is shown that the algorithm enables the neuron to reconstruct the response characteristics of another neuron with unknown parameter values, and the typical mechanisms of bifurcations and responses are clarified.
References
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Book
Elements of information theory
Thomas M. Cover,Joy A. Thomas +1 more
TL;DR: The author examines the role of entropy, inequality, and randomness in the design of codes and the construction of codes in the rapidly changing environment.
Journal ArticleDOI
The viterbi algorithm
TL;DR: This paper gives a tutorial exposition of the Viterbi algorithm and of how it is implemented and analyzed, and increasing use of the algorithm in a widening variety of areas is foreseen.
Book
Chaos in dynamical systems
TL;DR: In the new edition of this classic textbook, the most important change is the addition of a completely new chapter on control and synchronization of chaos as mentioned in this paper, which will be of interest to advanced undergraduates and graduate students in science, engineering and mathematics taking courses in chaotic dynamics, as well as to researchers in the subject.
Chaos in dynamical systems
TL;DR: In the new edition of this classic textbook, the most important change is the addition of a completely new chapter on control and synchronization of chaos as discussed by the authors, which will be of interest to advanced undergraduates and graduate students in science, engineering and mathematics taking courses in chaotic dynamics, as well as to researchers in the subject.
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