Joint Transceiver Design for Radar-Communication Spectral Sharing Systems by Minimizing Effective Interference Power

This paper investigates a spectrum sharing architecture for a colocated MIMO radar and a MIMO communication system. We develop an alternative formulation for joint resource allocation, aiming at minimizing the effective power of radar interference under the power and similarity constraints. The communication system mutual information (MI) is also simultaneously concerned in order to guarantee the communication performance. The degrees of freedom for system design are both the radar transceiver and the communication transmitter. For the joint designed original non-convex problem, an alternating iterative algorithm with multi-subproblems is derived based on the majorization-minimization algorithm, minimum variance distortionless response (MVDR) and semidefinite programming (SDP) algorithm. The convergence of the algorithm is guaranteed. Finally, we assess the effectiveness of the proposed approach via numerical results.