Shi Taixia, Chen Yang, Yao Jianping
Shanghai Key Laboratory of Multidimensional Information Processing, School of Communication and Electronic Engineering, East China Normal University, Shanghai, 200241, China.
Microwave Photonic Research Laboratory, School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, K1N 6N5, Canada.
Commun Eng. 2024 Sep 12;3(1):130. doi: 10.1038/s44172-024-00279-0.
To facilitate intelligent interconnection among people, machines, and things, the next generation of communication technology must incorporate various sensing functions besides high-speed wireless communications. Integration of radar, wireless communications, and spectrum sensing is being investigated for 6G with increased spectral efficiency, enhanced system integration, and reduced cost. Microwave photonics, a technique that combines microwave engineering and photonic technology is considered an effective solution for implementing the integration and breaking the bottleneck problems of electronic solutions. Here, we show a photonics-assisted joint radar, wireless communications, and spectrum sensing system that enables precise perception of the surrounding physical and electromagnetic environments while maintaining high-speed communication. Communication signals and frequency-sweep signals are merged optically using a shared system architecture and hardware to achieve signal level sharing, ultimately simultaneously achieving high-accuracy radar ranging and imaging with a measurement error within ± 4 cm and an imaging resolution of 25 × 24.7 mm, high-data-rate wireless communications at 2 Gbaud, and wideband spectrum sensing with a frequency measurement error within ±10 MHz in a 6 GHz bandwidth.
为促进人、机器和物之间的智能互联，下一代通信技术除了高速无线通信外，还必须纳入各种传感功能。目前正在研究将雷达、无线通信和频谱感知集成到6G中，以提高频谱效率、增强系统集成度并降低成本。微波光子学是一种将微波工程与光子技术相结合的技术，被认为是实现这种集成并突破电子解决方案瓶颈问题的有效方案。在此，我们展示了一种光子辅助的联合雷达、无线通信和频谱感知系统，该系统能够在保持高速通信的同时，精确感知周围的物理和电磁环境。通信信号和扫频信号通过共享系统架构和硬件进行光学合并，以实现信号级共享，最终同时实现高精度雷达测距和成像，测量误差在±4厘米以内，成像分辨率为25×24.7毫米，2 Gbaud的高数据速率无线通信，以及在6 GHz带宽内频率测量误差在±10 MHz以内的宽带频谱感知。
