FIELD: radio engineering.
SUBSTANCE: at the beginning of the transmission of each data packet, a clock signal is transmitted, which is formed by quadrature modulation of the carrier frequency signal by two binary pseudo-random sequences, synchronizing (SP) and informational (IP). The SP is an M-sequence, and the IP is formed from the M-sequence by adding one constant element. When transmitting data, the SP is extended by one element and an additional sequence (DS) is formed by cyclically shifting the original SP and adding one constant element. At each repetition period of the IP, two modulated sequences (MP1 and MP2) are formed by cyclically shifting the M-sequence from which the IP is formed by the number of elements determined by two transmitted information symbols, and adding one constant element. The carrier frequency signal is quadrature modulated by two binary sequences, one of which is formed by adding modulo two SP and MP1, and the second by adding modulo two DP and MP2.
EFFECT: increased data transfer rate.
1 cl, 2 dwg
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