Chapter 29: Integrated Sensing and Communication

Learning Objectives

• Define the dual-function radar-communication (DFRC) paradigm and identify key ISAC use cases including automotive radar, indoor localisation, and gesture recognition
• Derive the ambiguity function for common waveforms (LFM chirp, OFDM, random phase-coded) and relate range and velocity resolution to signal bandwidth and observation time
• Design OFDM-based radar processing using the 2D-FFT approach and analyse range-Doppler map formation from subcarrier and symbol dimensions
• Formulate the joint communication-sensing beamforming problem and characterise the rate-CRB trade-off for MIMO ISAC systems
• Explain the MIMO radar virtual aperture concept and its role in improving angular resolution through waveform diversity
• Apply compressed sensing and sparse recovery methods (LASSO, ISTA) to RF imaging problems and evaluate reconstruction quality versus measurement ratio and SNR