Beamforming Design for IRS-Assisted OFDM-ISAC System in C-RAN

This letter exploits the intelligent reflecting surface (IRS) to enhance an orthogonal frequency division multiplexing (OFDM) based integrated sensing and communication (ISAC) system under the cloud radio access network (C-RAN) structure. Our aim is to synthesis the ISAC beams of the remote radio heads (RRHs) approaching the desired frequency-space beam pattern while guaranteeing the user communication rate. To this end, we propose a joint design of beamforming for RRHs and IRSs and the fronthaul compression. Numerical results verify the effectiveness of the proposed design.