Development of Frequency Offset Compensation Method in Satellite Communication Channels Based on Shaping Filter Optimization

The purpose of this research is to optimize shaping filter parameters in order to improve the accuracy of frequency offset estimation in satellite communication channels, taking into account high Doppler shift values. The study presents comprehensive modeling of various system configurations using Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiple Access, Localized Frequency Division Multiple Access, and Interleaved Frequency Division Multiple Access technologies with different types of shaping filters, including traditional Raised Cosine and Root Raised Cosine filters, as well as the authors’ developed Band-Type Raised Cosine filter and its optimized version. The offered method, which combines flexible guard interval and optimized shaping filtration, significantly improves the accuracy of frequency offset estimation and ensures reliable data transmission in Low Earth Orbit satellite networks for fifth and sixth generation communications.