High Power Efficiency Intensity Modulation for Simultaneous Wireless Information and Power Transfer in Underwater Visible Light Communications

2021 Fiscal Year Final Research Report

• Project/Area Number: 17K18143
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering; Naval and maritime engineering
• Research Institution: Ibaraki University
• Principal Investigator: Kozawa Yusuke 茨城大学, 理工学研究科(工学野), 助教 (20634215)
• Project Period (FY): 2017-04-01 – 2022-03-31
• Keywords: 可視光ワイヤレス給電通信 / 可視光通信 / 海中可視光通信 / 海中通信 / 可視光ワイヤレス給電 / 水中通信 / 水中可視光通信

Outline of Final Research Achievements

This research project aims to develop an underwater wireless power transfer communication system that simultaneously realizes wireless communication and wireless power transfer between an unmanned submarine or underwater drone and underwater sensors in order to construct a flexible underwater high-speed wireless communication network. In particular, we propose an adaptive color shift keying (CSK) method using multiple colors to realize stable wireless power transfer while adapting to underwater conditions. The proposed adaptive CSK method has been theoretically analyzed to evaluate its communication performance and power supply performance according to undersea water quality.

Free Research Field

情報通信工学

Academic Significance and Societal Importance of the Research Achievements

水中空間で用いるあらゆるセンサのバッテリレス化およびワイヤレス化により、水中センサの海底配置及び水中センサからの情報収集が容易となり、より複数の水中センサをより広範囲に設置することが可能となる。これらの水中センサを用いた大規模水中無線通信ネットワーク網は、日本海域のメタンハイドレート等の国際資源の探索/発掘作業を効率的に進めることができ、環境イノベーションおよび国際競争力への寄与が期待できる。