Structured Contextual Deep Learning for Channel Estimation in UAV-OFDM Systems Under Beam Squint and Doppler Effects
Reliable channel estimation (CE) in unmanned aerial vehicles (UAVs)-assisted orthogonal frequency-division multiplexing (OFDM) systems is fundamentally challenged by mobility-induced Doppler dynamics and frequency-dependent beam squint, which jointly distort pilot observations and reduce channel coherence across subcar...