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Signals with an Additive Fractal Structure for Information Transmission
Abstract
This chapter is devoted to a new class of wideband signals with an additive fractal structure. Properties and characteristics of the new type of signals are studied. It is shown that such signals possess a high level of an irregularity and unpredictability at simple technical implementation. It is shown that an incommensurability of frequencies of fundamental high-stable oscillations leads to the high level of an irregularity of such signals. For an estimation of a level of signal complexity, authors offer to use the fractal dimensionality of their temporal implementations calculated by means of creation of the structural function. Methods of modification of the signal spectrum with the additive fractal structure are offered, permitting to increase the efficiency of the frequency resource application. For reduction of the high low-frequency signal power the authors suggest using signals with the additive fractal structure, centered in a moving average window. Methods of masking of the voice messages by means of signals of a new type are offered. The results of a computer experiment of secretive sound transmission are described.
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