Integrated sensing and communication based on space-time-coding metasurfaces

Programmable metasurfaces (PMs), also called reconfigurable intelligent surfaces (RISs), are planar structures capable of dynamically manipulating electromagnetic waves in real-time. Regarded as a key enabling technology for implementing smart wireless propagation environments, PMs/RISs also serve a...

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Vydané v:Nature communications Ročník 16; číslo 1; s. 1836 - 11
Hlavní autori: Chen, Xiao Qing, Zhang, Lei, Zheng, Yi Ning, Liu, Shuo, Huang, Zhuo Ran, Liang, Jing Cheng, Di Renzo, Marco, Galdi, Vincenzo, Cui, Tie Jun
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: London Nature Publishing Group UK 21.02.2025
Nature Publishing Group
Nature Portfolio
Predmet:
639/166/987
639/301/1005/1007
639/624/399/1015
Coding
Electromagnetic radiation
Humanities and Social Sciences
Metasurfaces
Microwave frequencies
multidisciplinary
Planar structures
Radar imaging
Real time
Reconfigurable intelligent surfaces
Science
Science (multidisciplinary)
Spacetime
Wireless communications
ISSN:2041-1723, 2041-1723
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Shrnutí:Programmable metasurfaces (PMs), also called reconfigurable intelligent surfaces (RISs), are planar structures capable of dynamically manipulating electromagnetic waves in real-time. Regarded as a key enabling technology for implementing smart wireless propagation environments, PMs/RISs also serve as an ideal supporting platform for integrated sensing and communication (ISAC). Here, we propose two ISAC schemes based on a special type of PMs/RISs: space-time-coding metasurfaces (STCMs). By leveraging space-time-coding strategies, STCMs simultaneously control the propagation at the fundamental (carrier) frequency for reliable wireless communication and generate spatially distributed harmonics for sensing. The proposed schemes seamlessly integrate both communication and sensing on a shared hardware platform, eliminating the need for additional sensors. For experimental validation, we implemented an ISAC system using a 2-bit STCM operating at microwave frequencies. Experimental results align with theoretical predictions, confirming the practical viability and effectiveness of the proposed ISAC schemes for applications in communication, imaging, radar, and sensing systems. This study proposes an integrated sensing and communication (ISAC) scheme leveraging space-timecoding metasurfaces (STCMs), which enables concurrent wireless communication and sensing on a shared platform.
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ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-025-57137-6