Enabling 4-D Sensing in MU-MIMO-OFDM: A Block-Wise Signal Design With Double-Orthogonal Radar Supplement
This paper proposes a novel multi-user multiple-input multiple-output orthogonal frequency-division multiplexing (MU-MIMO-OFDM) based integrated sensing and communication (ISAC) framework. By partitioning the time-frequency resource grid into sub-blocks, the architecture enables 4D sensing (range, velocity, azimuth, el...