RIS-Aided Dual-Functional Radar and Communication System Waveform Optimization

Dual-function radar (DFRC) technology has been recognized as an emerging solution to the spectrum scarcity problem. In the intelligent reflective surface (RIS)-assisted radar and communication spectrum coexistence system, there are problems such as the radar and base station can not eliminate the interference between each other, the platform information interaction is difficult, and it can not improve the user communication quality and radar detection performance at the same time. To address these problems, an efficient method to improve radar detection performance is proposed based on a smart surface (RIS)-assisted dual-function radar and communication system (DFRC). RIS is used to coordinate the user communication quali-ty and radar detection performance, due to the non-convexity of the objective function we use an alternating iteration method to optimize the coupled variables, finally we verify the effectiveness of the proposed algorithm through a simulation session.