OPERATING FREQUENCY CONTROL METHOD Russian patent published in 2023 - IPC H04B3/46 

FIELD: radio engineering.

SUBSTANCE: invention is intended for use in frequency-adaptive radio communication systems. The message transmission cycle is divided into three subcycles with constant and equal durations, the interference level is measured for the duration of the first subcycle, and radio signals are formed at the upper and lower operating frequencies for the duration of the second and third subcycles. Each possible combination formed from three information bits, according to the rule agreed with the receiving side, is assigned a unique type of radio signal, which is formed in the form of a harmonic oscillation on the upper subcarrier or on the lower subcarrier of the operating frequency for the duration of both the second and third subcycles, or for the duration of only the second, or only the third subcycle, or in the form of a signal structure, in which for the duration of the second subcycle form a harmonic oscillation on the upper subcarrier, and for the duration of the third subcycle form a harmonic oscillation on the lower subcarrier, or vice versa; combinations.

EFFECT: increased efficiency of changing unsuitable operating frequencies in the process of transmitting blocks of information data.

1 cl, 9 dwg, 1 tbl