Integrated Sensing and Communications: Recent Advances and Ten Open Challenges

Shihang Lu; Fan Liu; Yunxin Li; Kecheng Zhang; Hongjia Huang; Jiaqi Zou; Xinyu Li; Yuxiang Dong; Fuwang Dong; Jia Zhu; Yifeng Xiong; Weijie Yuan; Yuanhao Cui; Lajos Hanzo

arXiv · 2305.00179

Integrated Sensing and Communications: Recent Advances and Ten Open Challenges

Shihang Lu·Fan Liu·Yunxin Li·Kecheng Zhang·Hongjia Huang·Jiaqi Zou·Xinyu Li·Yuxiang Dong·Fuwang Dong·Jia Zhu·Yifeng Xiong·Weijie Yuan·Yuanhao Cui·Lajos Hanzo

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Abstract

It is anticipated that integrated sensing and communications (ISAC) would be one of the key enablers of next-generation wireless networks (such as beyond 5G (B5G) and 6G) for supporting a variety of emerging applications. In this paper, we provide a comprehensive review of the recent advances in ISAC systems, with a particular focus on their foundations, system design, networking aspects and ISAC applications. Furthermore, we discuss the corresponding open questions of the above that emerged in each issue. Hence, we commence with the information theory of sensing and communications (S$\&$C), followed by the information-theoretic limits of ISAC systems by shedding light on the fundamental performance metrics. Next, we discuss their clock synchronization and phase offset problems, the associated Pareto-optimal signaling strategies, as well as the associated super-resolution ISAC system design. Moreover, we envision that ISAC ushers in a paradigm shift for the future cellular networks relying on network sensing, transforming the classic cellular architecture, cross-layer resource management methods, and transmission protocols. In ISAC applications, we further highlight the security and privacy issues of wireless sensing. Finally, we close by studying the recent advances in a representative ISAC use case, namely the multi-object multi-task (MOMT) recognition problem using wireless signals.

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Shihang Lu, Fan Liu, Yunxin Li, Kecheng Zhang, Hongjia Huang, Jiaqi Zou, Xinyu Li, Yuxiang Dong, Fuwang Dong, Jia Zhu, Yifeng Xiong, Weijie Yuan, Yuanhao Cui, Lajos Hanzo. 2023-12-17. Integrated Sensing and Communications: Recent Advances and Ten Open Challenges. https://arxiv.org/abs/2305.00179

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