Design of wideband MIMO radar waveforms with low peak-to-average ratio

Multiple-input multiple-output (MIMO) radar systems allow array antennas to transmit different waveforms and, as such, enable flexible transmit beampattern synthesis. Most existing transmit beampattern synthesis methods focus on narrowband MIMO radar systems. In this paper, we propose a novel method to design transmit waveforms for wideband MIMO radar systems. The proposed technique is based on the optimization of the cross-spectral density matrix and achieves a low peak-to-average power ratio (PAR) as desired in practical radar operations. Simulations results are provided to verify the low PAR waveform design capability corresponding to arbitrary beampatterns.