A Bandwidth Efficient Dual-Function Radar Communication System Based on a MIMO Radar Using OFDM Waveforms

A novel dual-function radar communication (DFRC) system is proposed, that achieves high rate, and can flexibly trade-off rate for improved sensing performance. The proposed a monostatic multiple-input multiple-output (MIMO) transmits wideband, precoded, orthogonal frequency division multiplexing (OFDM) waveforms from its antennas. subcarriers are divided into two groups, i.e., shared private. On subcarrier, all antennas transmit simultaneously, while on private one only antenna at time. target estimation approach with low complexity to overcome the coupling of transmitted symbols parameters in echoes, which arises due use by method first operates (shared private) obtain coarse angle estimates, then fine-tunes those estimates based signal received subcarriers. resolution limited physical receive array, fine-tuning enabled effectively constructing virtual array has larger aperture than array. precoding matrix optimally designed optimize weighted combination beampattern error respect desirable beampattern, signal-to-noise ratio receiver.