Fig. 1. Illustration of fiber-to-the-room and ISAC RRU scene.

Fig. 2. Experimental setup. The blue parts serve for communication, the yellow parts serve for sensing, and the green parts serve for both communication and sensing.

Fig. 3. Achievable communication NDR with a distance of 1.15 m. (a) NDR vs Vpp. (b) NDR vs ROP.

Fig. 4. Radar spectrum of the 5 targets and the resolution with their distance error and the maximum and minimum PMNR labeled. Each spectrum is normalized by its peak value.

Fig. 5. PMNR when ROP varies for a 1.15-m target.

Fig. 6. Location map of the 3 users collected by the ISAC system.

Fig. 7. Communication NGMI map of the 3 users when transmitting the signal with estimated entropy.

Fig. 8. Comparison between the achievable communication NDR and estimated NDR and corresponding NGMI, together with the PS constellations (Est., estimated)