THz ISAC: A Physical-Layer Perspective of Terahertz Integrated Sensing and Communication

The terahertz (0.1-10 THz) band holds enormous potential for supporting unprecedented dat a ra tes and millimeter-level accurate sensing thanks to its ultra-broad bandwidth. Terahertz integrated sensing and communication (ISAC) is viewed as a game-changing technology to realize connected intelligence in 6G and beyond systems. In this article, challenges from the THz channel and transceiver perspectives, as well as difficulties of ISAC, are elaborated. Motivated by these challenges, THz ISAC channels are studied in terms of channel types, measurement, and models. Moreover, four key signal processing techniques to unleash the full potential of THz ISAC are investigated, namely, waveform design, receiver processing, narrowbeam management, and localization. Quantitative studies demonstrate the benefits and performance of the state-of-the-art signal processing methods. Finally, open problems and potential solutions are discussed.

Authors

Chong Han; Yongzhi Wu; Zhi Chen; Yi Chen; Guangjian Wang

Published

Feb 1, 2024

Journal or venue

IEEE Communications Magazine

DOI

10.1109/mcom.001.2200404

Paper type

journal article

Source

Openalex