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arXiv 2302.08310eess.SP
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采用空时调制超表面的无线通信

Wireless Communications with Space-Time Modulated Metasurfaces

Marouan Mizmizi, Dario Tagliaferri, Umberto Spagnolini

AI总结:

本文提出基于空时调制超表面(STMM)的无线通信数学模型,刻画空时耦合等特征并支持两种全双工架构设计,数值结果验证了其有效性与低能耗通信潜力。

摘要:

空时调制超表面(STMM)是面向下一代6G无线网络而新近研究的一项技术。STMM在各单元上用时变相位函数增强空间相位函数,从而能够传递可能对入射信号进行调制的信息。因此,STMM代表了可重构智能表面(RIS)的一种演进,而RIS仅设计空间相位模式。STMM可在不显著增加能量预算的情况下传递信号,这使其适用于能量受到严格约束的应用。本文提出了一种基于STMM的无线通信数学模型,为两种潜在的STMM架构奠定基础。其中一种架构具有出色的设计灵活性,而另一种则更具成本效益。该模型描述了STMM的独有特征,例如空时耦合,以及它们对系统性能的影响。所提出的STMM模型解决了全双工系统架构的设计准则,在该架构中,源自STMM的时间信号会产生一种与入射信号相重叠的调制。所给出的数值结果证明了该模型的有效性及其革新无线通信的潜力。

英文摘要:

Space-time modulated metasurfaces (STMMs) are a newly investigated technology for next 6G generation wireless communication networks. An STMM augments the spatial phase function with a time-varying one across the elements, allowing for the conveyance of information that possibly modulates the impinging signal. Hence, STMM represents an evolution of reconfigurable intelligent surfaces (RIS), which only design the spatial phase pattern. STMMs convey signals without a relevant increase in the energy budget, which is convenient for applications where energy is a strong constraint. This paper proposes a mathematical model for STMM-based wireless communication, that creates the basics for two potential STMM architectures. One has excellent design flexibility, whereas the other is more cost-effective. The model describes STMM's distinguishing features, such as space-time coupling, and their impact on system performance. The proposed STMM model addresses the design criteria of a full-duplex system architecture, in which the temporal signal originating at the STMM generates a modulation overlapped with the incident one. The presented numerical results demonstrate the efficacy of the proposed model and its potential to revolutionize wireless communication.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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