Optimizing Integrated Sensing and Communication Performance in Frequency Diverse Array-enabled Reconfigurable Intelligent Surface Systems

The core message of this article is to maximize the sum rate of an integrated sensing and communication (ISAC) system by jointly optimizing the beamforming vectors, reconfigurable intelligent surface (RIS) phase shifts, and frequency diverse array (FDA) frequency offsets, while guaranteeing the required signal-to-clutter-plus-noise ratio (SCNR) for target detection.