Optimal Power Allocation Strategy for a MIMO-Integrated Radar and Communication System Based OFDM Waveform

Multiple-input multiple-output (MIMO)-Integrated Radar and Communication System (IRCS) configuration is made up of multiple IRCS and communication users. The MIMO-IRCS uses the Orthogonal Frequency Division Multiplexing (OFDM) waveform, and this paper provides a power allocation strategy for both systems. The Karush-Kuhn-Tuckers (KKT) optimality requirements are used to formulate and solve the convex optimization problem analytically. The suggested strategy reduces total transmitted power while meeting two system prerequisites: SCNR (Signal-to-Clutter-plus-Noise Ratio) for target detection and SNR (Signal-to-Noise Ratio) for communication system performance. The simulation results show that the proposed strategy is effective in reducing the MIMO-IRCS system’s total power consumption.