4.7 Article

Integrated Human Activity Sensing and Communications

Journal

IEEE COMMUNICATIONS MAGAZINE
Volume 61, Issue 5, Pages 90-97

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MCOM.002.2200391

Keywords

Sensors; Feature extraction; OFDM; Signal processing; Wireless sensor networks; Receivers; Interference

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This article reviews the integrated sensing and communication (ISAC) technology in the context of human-related sensing. It presents a general ISAC receiver signal processing framework and categorizes human activity recognition (HAR) into different spatial deployments. The article also explores the connection between physical-layer system parameters and HAR performance, and provides experimental results on the sensing potentials of different ISAC systems. Finally, it discusses the technical challenges and identifies open research problems.
Advances in wireless communication and signal processing facilitate integrated sensing and communication (ISAC) - a compelling technology that intrinsically combines sensing and communication functionalities for the dual-purpose exploitation of wireless/hardware resources and pursues mutual benefits. Consequently, the next-generation communications network will be perceptive. In this article, we provide a review of human-related sensing in the context of ISAC. We first present a general ISAC receiver signal processing framework, with a focus on human activity recognition (HAR). Based on its specific spatial deployments, we then categorize ISAC HAR into monostatic, bi-static, and distributed deployments, and discuss their properties, critical research problems and solutions. To facilitate the system's realization and improve its recognition performance, we then explore the inherent connections between the physical-layer system parameters and HAR performance metrics. Experimental results are presented for characterizing the sensing potentials of different ISAC systems. Finally, we review the technical challenges and identify the open research problems.

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