"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 12, 2017

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V. S. Vykhovanets

V.A.Trapeznikov Institute of Control Sciences, Russian Academy of Sciences, 65 Profsoyuznaya street, 117997 Moscow, Russia


The paper is received on November 14, 2017


Abstract.  In this paper new and existing approaches are developed to data transfer for chaos-based communication systems. Chaotic communication has many advantages over traditional communication for its broadband, noise like characteristics. In the traditional communication based on Chaos Shift Keying, synchronization needs to be established between the transmitter and receiver of the system. Due to the extreme sensitivity of initial value of chaotic signal, it is very difficult to achieve synchronization. So this method is difficult to be applied practically. To solve this problem, an Orthochaotic Data Transfer system was proposed, in which chaos synchronization is not necessary. The chaotic signal is divided into pulses of a given duration. When transmitting the current pulse following the previous one is exposed orthogonalization or collinearization depending on transmitted data. On the receiver side the scalar product of the current received pulse and the previous received pulse is calculated and the decision is performed about transfer of one of the three numbers. Synchronization of the receiver and the transmitter are done on the basis of changes in sign of the mutual energy of the neighboring chaotic impulses. The new system was deeply studied and was compared with the Binary Phase Shift Keying modulation. The efficient of the proposed approach is illustrated with plots of dependences of bit-error rate on signal to noise ratio. It can be clearly seen that the Orthochaotic Data Transfer is realizable in digital secure communication.

Keywords:  broadband pseudo noise signal, chaotic signal, chaos synchronization, orthogonalization and collinearization of chaotic pulses, correlation receiving, chaotic digital secure communication.


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For citation:

V. S. Vykhovanets. Ortochaotic data transfer. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 12. Available at http://jre.cplire.ru/jre/dec17/4/text.pdf. (In Russian)