Co-Design of Shared Spectrum Access for Radar and Communication in Multiple Range Gates

Abstract

This brief develops a novel spectrum sharing scheme for radar and communication systems with multiple input multiple output (MIMO) structure in non-homogeneous interference which crosses the set of controlled radar multiple range gates. Under a space-time design model involving modulus, power, and similarity constraints on the transmit waveforms, we optimize the signal-to-interference-plus noise ratio (SINR) of radar and communication systems simultaneously with the weighted sum design. To tackle the nonconvex formulation, the alternating iteration is exploited to successively solve a series of sub-problems based on Taylor expansion, and the alternating direction method of multipliers (ADMM) design that enjoys low computational burden. Finally, numerical results are performed to demonstrate the merits of the proposed design in terms of the output performance, convergence and computational complexity.