Synthesis of the Optimal Dispersion Slope and Phase Joint Filtering Algorithm for the Broadband Signal in the Ionospheric Radio Channel

In HF radio links, an actual task is the increase of the used to transmit information signals bandwidth. One of the significant limitations for increasing the signal bandwidth is the effect of dispersion distortions that occurs in the ionospheric channel and appears for signals with a bandwidth of more than 100 kHz. In addition to the initial estimation and compensation of dispersion distortions, an important task is to track the change in the slope of the dispersion characteristic, which characterizes the effect of dispersion distortions. Also, an important problem is evaluation and tracking the change in the phase of the signal, which is relevant for high-speed radio links with high-order modulations. This paper presents a method for synthesizing the optimal filtering algorithm for the slope of the dispersion characteristic and signal phase, and also confirms the efficiency of the proposed method through a computational experiment.