Performance Investigation of Underwater Retroreflective Optical Integrated Sensing and Communication System

• Published in: Guangtongxin Yanjiu
• Main Authors: WAN Xin, WANG Haochuan, YE Yang, ZENG Zhihong, LIU Min, LENG Min, CHEN Chen
• Format: Journal Article
• Language: Chinese
• Published: 《光通信研究》编辑部 01.08.2025
• Subjects: CCR array; OFDM; RO-ISAC; underwater turbulence
• ISSN: 1005-8788

【Objective】Lightwave-based Retroreflective Optical Integrated Sensing and Communication (RO-ISAC) systems have the advantages of large communication capacity and high sensing accuracy, which can offer communication and sensing capabilities for the underwater activities. However, the limited Field of View (FOV) of the Corner Cube Reflector (CCR) in underwater RO-ISAC systems greatly limits the effective sensing range of the system. Hence, how to increase the FOV of the CCR to expand the effective sensing range of the system is a subject that needs to be solved urgently. Moreover, the impact of underwater turbulence on the communication and sensing performance of the RO-ISAC system also remains to be further explored.【Methods】For the limited FOV issue of the CCR, we propose a CCR array scheme based on an angle diversity structure. The proposed angle diversity CCR array consists of a central CCR unit and multiple side CCR units distributed in a circle, where each side CCR unit has a certain tilt angle. In the un