Low-Complexity Frequency Domain Equalization over Fast Fading Channels
Low-Complexity Frequency Domain Equalization over Fast Fading Channels
Wireless communications over fast fading channels are challenging, requiring either frequent channel tracking or complicated signaling schemes such as orthogonal time frequency space (OTFS) modulation. In this paper, we propose low-complexity frequency domain equalizations to combat fast fading, based on novel discrete delay-time and frequency-Doppler channel models. Exploiting the circular …