期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2020
卷号：20
期号：6
页码：91-98
出版社：International Journal of Computer Science and Network Security
摘要：This paper proposes an underwater small area acoustic network (USAAN) system with a 32kHz bandwidth OFDM signal and robust TDD synchronization. An ocean experiment was conducted at a barge in Uchiura Bay, Shizuoka Prefecture. Although the transducer on the BS side is moving, a stable signal delay time from DL to UL was measured, and the demodulated 16QAM constellation was confirmed normally on the UE side. Using this TDD-USAAN and the results of ocean experiments, we developed a prototype of a wireless underwater robot control system. The prototype was actually tested offshore off the coast of Yomitan Village, Okinawa Prefecture. In QPSK / 16QAM modulation, basic robot movement control such as upward, downward, right turn, left turn, etc. has been demonstrated by a bidirectional link. In addition, 240x213 pixel underwater photos can be uploaded in real time.
