Transmit Beampattern Shaping Via Waveform Design In Cognitive Mimo Radar

This paper is focused on designing a set of constant modulus waveform for cognitive Multiple-Input Multiple-Output (MIMO) radar systems. The aim is to shape the beampattern in transmitter to minimize the Integrated Side-lobe Level (ISL) in spatial domain in a cognitive paradigm. This minimization leads to a NP-hard and non-convex optimization problem. To address this, the problem is formulated based on Coordinate Descent (CD) framework with constant modulus constraint. Subsequently, an low-complexity and fast method based on Discrete Fourier Transform (DFT) is proposed which monotonically decreases the spatial ISL. Finally, we show some numerical results and assess the performance of the proposed technique.