Underwater Optical Wireless Communication
Hemani Kaushal,Georges Kaddoum +1 more
TLDR
An exhaustive overview of recent advances in underwater optical wireless communication is provided and a hybrid approach to an acousto-optic communication system is presented that complements the existing acoustic system, resulting in high data rates, low latency, and an energy-efficient system.Abstract:
Underwater wireless information transfer is of great interest to the military, industry, and the scientific community, as it plays an important role in tactical surveillance, pollution monitoring, oil control and maintenance, offshore explorations, climate change monitoring, and oceanography research. In order to facilitate all these activities, there is an increase in the number of unmanned vehicles or devices deployed underwater, which require high bandwidth and high capacity for information transfer underwater. Although tremendous progress has been made in the field of acoustic communication underwater, however, it is limited by bandwidth. All this has led to the proliferation of underwater optical wireless communication (UOWC), as it provides higher data rates than the traditional acoustic communication systems with significantly lower power consumption and simpler computational complexities for short-range wireless links. UOWC has many potential applications ranging from deep oceans to coastal waters. However, the biggest challenge for underwater wireless communication originates from the fundamental characteristics of ocean or sea water; addressing these challenges requires a thorough understanding of complex physio-chemical biological systems. In this paper, the main focus is to understand the feasibility and the reliability of high data rate underwater optical links due to various propagation phenomena that impact the performance of the system. This paper provides an exhaustive overview of recent advances in UOWC. Channel characterization, modulation schemes, coding techniques, and various sources of noise which are specific to UOWC are discussed. This paper not only provides exhaustive research in underwater optical communication but also aims to provide the development of new ideas that would help in the growth of future underwater communication. A hybrid approach to an acousto-optic communication system is presented that complements the existing acoustic system, resulting in high data rates, low latency, and an energy-efficient system.read more
Citations
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Underwater Optical Wireless Communications, Networking, and Localization: A Survey
TL;DR: This work provides a comprehensive survey on the challenges, advances, and prospects of underwater optical wireless networks (UOWNs) from a layer by layer perspective which includes physical layer issues including propagation characteristics, channel modeling, and modulation techniques.
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20-meter underwater wireless optical communication link with 1.5 Gbps data rate
Chao Shen,Yujian Guo,Hassan M. Oubei,Tien Khee Ng,Guangyu Liu,Ki-Hong Park,Kang-Ting Ho,Mohamed-Slim Alouini,Boon S. Ooi +8 more
TL;DR: This work presents a compact and low power consumption underwater wireless optical communication (UWOC) system utilizing a 450-nm laser diode (LD) and a Si avalanche photodetector and demonstrates a high-speed UWOC link offering a data rate up to 2 Gbps over a 12-meter-long, and 1.5 Gbpsover a record 20- meter-long underwater channel.
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