Wang Qigejian, Deng Yirui, Mishra Deepak, Xie Yixuan, Aboutanios Elias, Atakaramians Shaghik
Appl Opt. 2024 May 20;63(15):4068-4076. doi: 10.1364/AO.516852.
The terahertz spectrum has the ability to provide high-speed communication and millimeter-level resolution. As a result, terahertz-integrated sensing and communication (ISAC) has been identified as a key enabler for 6G wireless networks. This work discusses a photonics-based D-band communication system for integrated high-resolution localization and high-speed wireless communication. Our empirical results show that a communication rate of 5 Gbps over a distance of 1.5 m and location identification of the target with millimeter-level (<4 ) range resolution can be conducted simultaneously using the same signal. We also show that the error due to the thickness of the beam splitter can be eliminated, while the quantization error and the random drift errors are the limiting factors of the resolution achieved. This experimental demonstration using D-band communication indicates that terahertz ISAC can be realized for 6G networks while considering the underlying system restrictions (e.g., bandwidth limit and lens diameter).
太赫兹频谱具有实现高速通信和毫米级分辨率的能力。因此，太赫兹集成传感与通信（ISAC）已被视为6G无线网络的关键使能技术。本文探讨了一种基于光子学的D波段通信系统，用于集成高分辨率定位和高速无线通信。我们的实验结果表明，使用同一信号可同时实现1.5米距离上5 Gbps的通信速率以及对目标进行毫米级（<4 ）距离分辨率的定位识别。我们还表明，分光镜厚度引起的误差可以消除，而量化误差和随机漂移误差是实现分辨率的限制因素。使用D波段通信的这一实验演示表明，在考虑潜在系统限制（如带宽限制和透镜直径）的情况下，6G网络可以实现太赫兹ISAC。
