INFORMATION TRANSMISSION BASED ON SPECTRUM MANIPULATION OF A WIDEBAND CHAOTIC SIGNAL

Abstract

Application of chaotic signals in modern radar and telecommunications is an actual task that can significantly extend the functionality of these systems and improve their performance. In this paper, a method for information transmission using chaotic signal generated by nonlinear dynamical system with delayed feedback of ring type has been suggested. Modulating information sequence controls the parameter of non-linear element, so that it switches the chaotic modes and changes the spectral structure of the signal transmitted to the communication channel. A non-coherent reception was used for demodulation of the received message. The effectiveness of this method of information transmission for the covert operation of communication system in a complex interference environment has been shown.

Keywords

• a nonlinear dynamical system with delayed feedback
• broadband data transmission system
• deterministic chaos