Improving the Efficiency of Adaptive Operation of the Decameter Communication Line
Aleksey Rybakov, Grigoriy A. Fokin · 2025
Increasing the noise immunity of a digital radio communication system (decameter communication line) through the use of software equalizers is a modern and relevant topic for the development of adaptation algorithms and mechanisms for using signal-code sequences for such a radio link. It is necessary to provide fundamentally new solutions for the task of creating ionospheric radio communication lines. A critical condition for each of these options is the effect of the Doppler shift. The study highlights the importance of adaptive technologies to ensure stable and reliable communications in a volatile and heterogeneous distribution environment. The proposed method of reducing the effect of Doppler shift by using a channel equalizer contains new ideas about using the variability of the signal preamble to adjust the receiver. Contribution. The simulation results showed that the use of equalizers significantly increases noise immunity, reducing the required signal-to-noise ratio (SNR) at a given level of bit errors (BER) by 10−3.