FIELD: radio engineering, communication.
SUBSTANCE: packet mode transmission is carried out using statistically mutually independent parallel radio channels, through which data messages are transmitted using two-step hybrid modulation of subcarrier signals in an OFDM system; at the first step packet data of generic messages modulate, via multifrequency modulation, OFDM subcarriers in all parallel channels, and at the second step, individual message data modulate, via differential phase shift keying law, subcarriers activated at the first step only in their individual channel.
EFFECT: higher throughput of the system with data packet transmission via parallel channels and combining in the process non-coherent demodulation of squares of readings of OFDM signal subcarriers received in each of the parallel channels.
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