| 摘要 |
FIELD: information technology.SUBSTANCE: invention relates to method and system for transferring information. That is ensured by converting a binary code in two sequences of logic ternary code with symbols S, S, Sand T, T, T, whereupon at the first stage of modulation the first sequence of signals S, S, Sare in the form of amplitude-pulse modulation (APM), and the second T, T, T- in the form of width-puls modulation (WPM). Then at the second stage of modulating signal transmitted via communication channel, APMis converted to frequency modulation (FM), and amplitude of frequency-modulated oscillations is set in compliance with values ternary code symbols S, S, S. Note here that three fixed durations of WPM, are converted to binary phase modulationwhereupon changing WPM duration the carrier phase with combined modulation FM+AMis changed to 180°. At the receiving side for demodulation of signal generated at the transmitting side, apart from frequency and phase demodulators in each channel allocating frequency components of the received signal, the amplitude demodulator is used, the obtained results of amplitude demodulation are compared with data recieved by frequency and phase demodulators.EFFECT: technical result consists in improvement of reliability of transmitted information.5 cl, 4 dwg |
