Spectrum-Sharing between a Surveillance Radar and a MIMO Communication System in Cluttered Environments

In this study, we consider the joint design of a multiple-input multiple-output communication system and a surveillance radar sharing the same bandwidth. The degrees of freedom for system optimization are the transmit powers of both systems, the space-time linear communication codebook, and the radar receive filters. In this framework, we maximize the mutual information at the communication system under a constraint on the minimum signal-to-disturbance ratio for each inspected range-azimuth resolution cell of the radar. An approximate solution to this optimization problem is found using a block coordinate ascent method, and a numerical example is provided to show the merits of the proposed design.