ISAC for 6G: From Channel Models and Waveform Design to Proof-of-Concept Systems

Integrated sensing and communication (ISAC) is among the early feature areas being explored for 6G in third generation partnership project (3GPP) standards. It involves the seamless integration of communication and sensing functions within a unified system architecture, where a single base station (also known as gNB) is inherently capable of supporting both roles. We will discuss recent developments in ISAC, focusing on key use cases and relevant channel models, including target and background environment channels, waveform design, beamforming strategies, and associated hardware considerations. We highlight several proof-of-concept (PoC) systems that showcase practical implementations of ISAC concepts.