In this Letter, a modulated-symbol domain matched filtering scheme based on orthogonal frequency division multiplexing (OFDM) is proposed for the photonic-assisted W-band integrated sensing and communication (ISAC) system. The photonic-assisted ISAC system based on a single OFDM waveform is experimentally demonstrated. By using the single OFDM waveform, it can improve the spectrum efficiency and achieve dual functionalities of communication and radar detection simultaneously. The optical heterodyne scheme is used to generate the W-band OFDM signal for the ISAC system. The experimental results show that the data rate of OFDM is up to 4.56 Gbit/s; meanwhile, it can achieve the radar ranging with a ranging resolution of 1.88 cm and a ranging error of millimeter level in the OFDM-ISAC system.

中文翻译：

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基于单 OFDM 波形的光子辅助集成传感与通信系统的调制符号域匹配滤波方案

在这封信中，提出了一种基于正交频分复用（OFDM）的调制符号域匹配滤波方案，用于光子辅助W波段集成传感与通信（ISAC）系统。实验演示了基于单个 OFDM 波形的光子辅助 ISAC 系统。通过使用单一的OFDM波形，可以提高频谱效率，同时实现通信和雷达检测的双重功能。光外差方案用于为ISAC系统生成W波段OFDM信号。实验结果表明，OFDM的数据速率高达4.56 Gbit/s；同时可以在OFDM-ISAC系统中实现测距分辨率为1.88cm、测距误差为毫米级的雷达测距。