FIELD: electrical communication engineering.
SUBSTANCE: invention relates to communication engineering and can be used in a hydroacoustic communication system. For this purpose, the array of N = 2n−1 cyclic shifts of the M-sequence is divided into sub-arrays. Message to be transmitted, presented in binary form, is divided into sections the number of which corresponds to the number of channels. These sections, which are essentially binary numbers, define for each channel a number of cyclic shift of the M-sequence. All formed M-sequences with due allowance for cyclic shifts defined for them are summed in bitwise manner and the sequence obtained after summation is used as a modulating function when forming a signal emitted to the water medium. In the receiver in the received signals after their demodulation a modulating function is selected. Using a correlator, a cross-correlation function is calculated, which has a number of maxima equal to the number of M-sequences to be summed in the transmitter, determining their cyclic shifts and corresponding content of the transmitted message.
EFFECT: technical result consists in improvement of speed of communication signals transmission.
1 cl, 6 dwg, 1 tbl
