METHOD OF MANAGEMENT OF TWO-WAY HIGH-SPEED RADIO COMMUNICATION WITH EFFICIENT USE OF THE RADIO FREQUENCY SPECTRUM IN THE DEPARTMENTAL COMMUNICATION SYSTEM Russian patent published in 2018 - IPC H04B7/00 

FIELD: radio engineering and communications.

SUBSTANCE: invention relates to the field of radio communication and can be used in the construction of departmental communication systems (DCS), including medium-wave (MW) and short-wave (SW) ones, providing full-available single-frequency duplex and simplex high-speed exchange of digitized data and voice messages, and is designed to increase the noise immunity of conducting duplex and simplex radio communication between any two DCS transceiver sets (TS) by providing the possibility of selecting the optimum communication frequency with a minimum level of additive interference from the corresponding group of optimal operating frequencies determined by the results of a short-term prediction of ionospheric propagation conditions for each time interval of the DCS operation. Method of conducting two-way high-speed radio communication with the efficient use of the radio-frequency spectrum in DCS is that a control binary signal of the meander type is generated, by means of which the TS is periodically switched from the receive mode to the transmit mode with a frequency of F=1/T_cycle, where T_cycle – duration of one "reception" – "transmission" switching cycle, which is selected based on the allowable delay of the digitized analog telephone signal, from the moment of its transmission to the moment of its reception when conducting duplex radio communication, the time duplex group signal (TDGS) modulated with a digital selective call signal is broadcasted; in each DCS TS, K receive channels on K independent receive frequency channels are are used, a receive channel is selected and the TS is set to a simplex mode of operation with the simultaneous reconstruction of the transmission channel of this TS to the frequency of the selected reception channel followed by the maintenance of a simplex communication session at this frequency.

EFFECT: increase of noise immunity when conducting duplex and simplex radio communication.

1 cl, 3 dwg