INFORMATION TRANSMISSION BY PHASE RELATIONS MANIPULATION OF SPECTRAL COMPONENTS OF NOISE SIGNAL

Abstract

A new approach is proposed to the methods development for the information transmission in confidential communication systems of a noise carrier. The manipulation of the phase relations of the spectral components of the noise (stochastic) signal is used in the proposed method for transfer information. Third-order autocorrelation functions (two-dimensional third-order statistics) are calculated in the determination of phase relations. Bispectral analysis is performed, which, unlike the energy spectrum, preserves information on the phase spectrum and thereby restores the form of the received stochastic signal. The bispectral density is calculated, the bi-amplitude and biphasic spectra of the analyzed noise signal are obtained in numerical and graphical form. It is shown that the change in the shape of the noise signal by a certain rule leads to a well-known phase relations of the spectral components, and this allows us to reconstruct the received signal correctly. Key words: noise carrier, third-order autocorrelation functions, bispectral density, bi-amplitude spectrum, biphasic spectrum.