DD-Domain Pilot Design for OTFS-Based Integrated Sensing and Communication in LEO Non-Terrestrial Networks
Low Earth Orbit (LEO) non-terrestrial networks (NTNs) suffer from severe Doppler shifts and rapidly time-varying channels, making orthogonal frequency-division multiplexing (OFDM)-based integrated sensing and communication (ISAC) vulnerable to intercarrier interference. Although orthogonal time frequency space (OTFS) a...