Non-Line-of-Sight 300 GHz Band Wireless Link Enabled by a Frequency Dependent Reflective Surface

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-02-06 DOI:10.1109/TTHZ.2025.3539501

Frédéric Dutin;Unai Beaskoetxea Gartzia;Victor Torres;Pascal Szriftgiser;Jorge Teniente;Guillaume Ducournau

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Abstract

Reconfigurable intelligent surface is a promising technology for the up-coming sixth-generation (6G) of cellular communication networks. In this context, an experimental study of specular and nonspecular reflections of a reflective surface (RS) by scattering parameter measurements in the 300 GHz range is presented. Here, we compare the insertion loss of a fixed and passive RS at its optimal output deflection angle with respect to the specular reflection on a metallic plate. We propose a methodology to assess the losses induced by the surface and validate the use of the device within a THz link. At its best, around 290 GHz, the surface insertion loss is less than 3 dB compared to the metallic plate. We then investigate a non-line-of-sight (LoS) THz link operating in QSPK and QAM-16 coherent transmission using the RS. Data rates up to 10 Gbits/s for QSPK and 20 Gbits/s for QAM-16 are obtained. This is, to the best authors knowledge, the first demonstration of a NLoS THz data-link including such RS.

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由频率相关反射表面实现的非视距300 GHz波段无线链路

可重构智能表面是即将到来的第六代（6G）蜂窝通信网络的一项有前途的技术。在此背景下，通过测量反射表面300 GHz范围内的散射参数，对反射表面的镜面反射和非镜面反射进行了实验研究。在这里，我们比较了固定和被动RS在其最佳输出偏转角度下相对于金属板上的镜面反射的插入损耗。我们提出了一种方法来评估由表面引起的损耗，并验证该设备在太赫兹链路中的使用。在最佳情况下，在290 GHz左右，与金属板相比，表面插入损耗小于3 dB。研究了QSPK和QAM-16的非视距太赫兹链路，得到了QSPK和QAM-16的数据速率分别为10gbits /s和20gbits /s。据笔者所知，这是包括RS在内的NLoS太赫兹数据链的首次演示。

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来源期刊

IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

7.10

自引率

9.40%

发文量

102

期刊介绍： IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.