지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 손경락
- 발행연도
- 2015
- 저작권
- 한국해양대학교 논문은 저작권에 의해 보호받습니다.
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Recently, a variety of research are proceeding for underwater environment monitoring system and resource development. Underwater Communication infrastructures are required for underwater wireless sensor networks. Method of Underwater wireless communications are radio frequency communications, acoustic communications and optical communications. Underwater communication is severely limited when compared to communications in air because water is essentially opaque to electromagnetic radiation except in visible range. Acoustic systems are capable of long range communication, but offer limited data rates and significant latency due to the speed of sound in water.
On the other hand, optical wireless communication has been proposed as one of the best alternatives to meet the requirements of the underwater observation and subsea monitoring systems.
Therefore, visible light wireless communications is an alternative in underwater. Visible wavelength range have a lower absorption than electromagnetic wave at underwater. And it transmits big data such as photos and videos by using a wide bandwidth.
In this paper, we use the lens for connecting in parallel LED sending away the light. An interface between LED lighting communication system and Bluetooth module is presented to support the underwater-to-air communications. Error free image and text transmission at 3 m of water were achieved at bit rates of 230.4 kbps.
On the other hand, optical wireless communication has been proposed as one of the best alternatives to meet the requirements of the underwater observation and subsea monitoring systems.
Therefore, visible light wireless communications is an alternative in underwater. Visible wavelength range have a lower absorption than electromagnetic wave at underwater. And it transmits big data such as photos and videos by using a wide bandwidth.
In this paper, we use the lens for connecting in parallel LED sending away the light. An interface between LED lighting communication system and Bluetooth module is presented to support the underwater-to-air communications. Error free image and text transmission at 3 m of water were achieved at bit rates of 230.4 kbps.
목차
1. 서 론 12. 가시광 무선통신2.1 가시광 무선통신의 개념 42.2 가시광 통신의 연구동향 52.2.1 국내 기술 동향 52.2.2 국외 기술 동향 72.3 무선 광채널 92.4 수중 가시광 통신 143. 실험 및 결과3.1 실험 시스템 구성 163.2 지상 가시광 무선통신 시스템 성능 실험 233.2.1 실험 설정 환경 233.2.2 실험 결과 263.3 수중 가시광 무선통신과 블루투스 연동 실험 293.3.1 수중 실험 구성도 293.3.2 실험 내용 및 결과 304. 결 론 36감사의 글 37참고문헌 38
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