Proceedings PaperFluctuation characteristics of signals transmitted by a chaotic sequence with modulated parameters
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The signal-to-noise ratio characterizing data transmission using modulation of the parameters of the mapping generating a chaotic sequence is estimated. It is shown that, in systems using a control parameter to introduce information, the output signal-to-noise ratio is reduced as compared to the input value. It is found that noise fluctuations in the information parameter measured depend on signal fluctuations at several adjacent sample points. A multichannel system is considered. It is noted that the increase in the number of channels results in the decrease in the output signal-to-noise ratio due to both addition of the noise components of the adjacent sample elements and exponential growth of errors in the reconstructed parameters of chaotic systems. A decrease in the output signal-to-noise ratio is found to be partly compensated by impeding unauthorized access to the information transmitted.