Chapter 24: Massive MIMO for ISAC

Learning Objectives

• Formulate the monostatic and bistatic ISAC signal models and identify the shared degrees of freedom between communication and sensing
• State the three deployment flavors of ISAC (integrated, coexisting, cooperative) and the Liu–Masouros taxonomy
• Derive the capacity–distortion region for a joint communication-sensing channel and interpret the Pareto boundary
• Formulate beampattern synthesis under per-user SINR constraints as a semidefinite program in the transmit covariance $\mathbf{R}_x$
• Analyze how cell-free architectures improve target detection probability via multistatic diversity, and design the joint fronthaul for communication plus sensing
• Contrast OFDM-ISAC and OTFS-ISAC in terms of ambiguity function, delay-Doppler coupling, and high-mobility robustness