Journal
PROCEEDINGS OF THE IEEE
Volume 90, Issue 5, Pages 662-690Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPROC.2002.1015001
Keywords
chaos-based CDMA; chaos-based EMC; chaotic systems; correlations; Markov processes; quantized processes; statistical analysis
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The application of chaotic dynamics to signal processing tasks steins from the realization that its complex behaviors become tractable when observed from a statistical perspective, Here we illustrate the validity of this statement by considering two noteworthy. problems-namely, the synthesis of high-electromagnetic compatibility clock signals and the generation of spreading sequences for direct-sequence code-division comunication systems, and by showing how the statistical approach to discrete-time chaotic systems can be applied to find their optimal solution. To tills aim, we first review the basic mathematical tools both intuitively and fonnall. we consider the Perron-Frobenius operator: its spectral decomposition and its tic to the correlation properties of chaotic sequences. Then, by leveraging on the modeling/approximation of chaotic systems through Markov chains, we introduce a matrix/tensor -based framework it,here statistical indicators such as high-order correlations call be quantified. We underline how, for many particular cases, the proposed analysis tools call be reversed into synthesis methodologies and we use them to tackle the two above mentioned problems. In both cases, experimental evidence shows that the availability of statistical tools enables the design of chaos-based systems which favorable, compare with analogous nonchaos-based counterparts.
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