Integrated Sensing and Communication Signals Toward 5G-A and 6G: A Survey

By Zhiqing Wei, Hanyang Qu, Yuandi Wang, Xin Yuan, Huici Wu, Ying Du, Kaifeng Han, Ning Zhang, Zhiyong Feng. IEEE Internet of Things Journal, 2023

641 citations recorded by the source corpus.

Integrated sensing and communication (ISAC) has the advantages of efficient spectrum utilization and low hardware cost. It is promising to be implemented in the fifth-generation-advanced (5G-A) and sixth-generation (6G) mobile communication systems, having the potential to be applied in intelligent applications requiring both communication and high-accurate sensing capabilities. As the fundamental technology of ISAC, ISAC signal directly impacts the performance of sensing and communication. This article systematically reviews the literature on ISAC signals from the perspective of mobile communication systems, including ISAC signal design, ISAC signal processing, and ISAC signal optimization. We first review the ISAC signal design based on 5G, 5G-A, and 6G mobile communication systems. Then, radar signal processing methods are reviewed for ISAC signals, mainly including the channel information matrix method, spectrum lines estimator method, and super-resolution method. In terms of signal optimization, we summarize peak-to-average power ratio (PAPR) optimization, interference management, and adaptive signal optimization for ISAC signals. This article may provide the guidelines for the research of ISAC signals in 5G-A and 6G mobile communication systems.

Subfields: Aerospace Engineering, Electrical and Electronic Engineering, Oceanography

View Paper: https://www.semanticscholar.org/paper/a4b642ce832278fd319179224546a19535c1cb59

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Citations in the corpus

The Integrated Sensing and Communication Revolution for 6G: Vision, Techniques, and Applications (2024, positive): “…IDFT over the columns and DFT over the rows of the resulting observation matrix provides the delay–Doppler/range–velocity spectrum, from which target detection and parameter estimation can be performed [3], [43], [49], [212], e.g., via constant false alarm rate (CFAR) processing [194, Ch. 6.2.4].”
Integrated Sensing and Communications: Recent Advances and Ten Open Challenges (2023, background): “In large-scale connected IoT scenarios, ISAC-enabled IoT devices surpass the limitations of traditional wireless sensor networks, tightly coupling the physical and digital aspects of IoT nodes [8], [16], [20], [61].”