Cross-Domain Collaborative Stacked Intelligent Metasurface for 6G Wireless Communications
Sun, Yifu Chen, Jingyu An, Kang Cao, Haotong Lin, Zhi Zhu, Yonggang Cheng, Qiang Guizani, Mohsen Chatzinotas, Symeon
Sun, Yifu
Chen, Jingyu
An, Kang
Cao, Haotong
Lin, Zhi
Zhu, Yonggang
Cheng, Qiang
Guizani, Mohsen
Chatzinotas, Symeon
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Computer Science
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Journal article
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English
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Abstract
The sixth-generation (6G) wireless communications aim to achieve wide coverage, ubiquitous connectivity, and ultra-reliable low-latency transmission by unleashing the potentials of cross-domain collaboration in space, semantics, and polarization. Recently, stacked intelligent metasurface (SIM) has emerged as a revolutionary paradigm for enabling multi-domain communication functionalities, i.e., offering high-degree-of-freedom (DoF) spatial beamforming, parallel light-speed semantic computing, and flexible polarization manipulation with low hardware cost and high scalability. However, the existing SIM-related works merely focus on single-domain manipulation, while the potentials of SIM for cross-domain collaboration remain unexploited in 6G wireless networks. To this end, we propose a cross-domain collaborative SIM (C-SIM), where the above capabilities in spatial, semantic, and polarized domains are seamlessly integrated to promotes a significant performance gain for 6G wireless networks. This paper provides a comprehensive overview of C-SIM, encompassing its preliminaries, architecture, and potential benefits. Moreover, we discuss the cutting-edge applications and identify open challenge associated with enabling C-SIM. Finally, a case study and numerical results are presented to quantify the benefits of C-SIM for 6G wireless networks.
Citation
Y. Sun, J. Chen, K. An, H. Cao, Z. Lin, Y. Zhu , et al., "Cross-Domain Collaborative Stacked Intelligent Metasurface for 6G Wireless Communications," IEEE Wireless Communications, vol. PP, no. 99, pp. 1-10, 2026, https://doi.org/10.1109/mwc.2026.3669592.
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IEEE Wireless Communications
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40 Engineering, 4006 Communications Engineering, 46 Information and Computing Sciences, 4613 Theory Of Computation, 7 Affordable and Clean Energy
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IEEE