DD-a-OFDM augments classical OFDM with DD-domain channel estimation using TF pilots, transforming ICI into Gaussian noise, and shows lower BER than OFDM plus better estimation accuracy than OTFS at reduced pilot cost.
N arrow- band channel measurements and statistical characterizati on in subway tunnels at 1.8 and 5.8 GHz
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Delay-Doppler Domain Signal Processing Aided OFDM (DD-a-OFDM) for 6G and Beyond
DD-a-OFDM augments classical OFDM with DD-domain channel estimation using TF pilots, transforming ICI into Gaussian noise, and shows lower BER than OFDM plus better estimation accuracy than OTFS at reduced pilot cost.