DEPARTMENTAL SYSTEM OF TWO-WAY HIGH-SPEED RADIO COMMUNICATION WITH EFFICIENT USE OF THE RADIO FREQUENCY SPECTRUM 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-range single-frequency duplex and simplex high-speed exchange of digitized data and voice messages between radio subscribers of the system, and is designed to increase the noise immunity of conducting duplex and simplex radio communication between any two DCS TS due to the provision of the possibility of selecting the optimal communication frequency with a minimum level of additive interference from the corresponding group of optimal operating frequencies determined by the results of short-term prediction of ionospheric propagation conditions for each time interval of operation of the DCS. Departmental system of two-way high-speed radio communication with efficient use of the radio-frequency spectrum consists of K identical transceiver sets, each of which contains a serially connected analog signal source, an encoder, a first input signal switch, a signal compression device, a second input signal switch, a radio transmitter, a radio switch, and a radio receiving device (RRD), each transceiver set comprises a clock driver and an optimum communication frequency selection device (OCFSD), RRD includes K receiving channels combined by the antenna inputs, the value of K determines the number of optimal operating frequencies allowed for communication to each transceiver set, the values of which, when the departmental system operates within each time interval of the established duration, are determined by the frequency schedule compiled from the results of a short-term prediction of the ionospheric propagation conditions of radio waves.

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

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