Study on methods for estimating and compensating frequency offset in 6G communication systems with DFT-S-OFDM technology under conditions of Rice and Rayleigh propagation channels

The article investigates effectiveness of methods for estimating and compensating for carrier frequency offset (CFO) for signal processing technology based on orthogonal frequency distribution using discrete Fourier transform (DFT-s-OFDM) in terms of use of Rice and Rayleigh channels close to real propagation channels. Also, the possibility to increase the efficiency of estimating and compensating for frequency mismatch by introducing the Kronecker product operation into original algorithms of signal processing methods is considered. The article investigates the effectiveness of methods for estimating and compensating for carrier frequency offset (CFO) for signal processing technology based on orthogonal frequency distribution using discrete Fourier transform (DFT-s-OFDM) in conditions of using Rice and Rayleigh channels close to real propagation channels. Also, the possibility of increasing the efficiency of estimating and compensating for frequency mismatch by introducing the Kronecker product operation into the original algorithms of signal processing methods is considered. The effectiveness of using shorter guard intervals in noisy channels and high levels of frequency mismatch is confirmed.