Underwater Optical Wireless Communication
Underwater Optical Wireless Communication
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DOI：
10.1109/access.2016.2552538
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发表时间：
2016-01-01
期刊：
影响因子：
3.9
通讯作者：
Kaddoum, Georges
中科院分区：
文献类型：
--
作者：
Kaushal, Hemani;Kaddoum, Georges
水下无线信息传输在军事、工业和科学界都有着重要的意义，因为它在战术监视、污染监测、石油控制和维护、近海勘探、气候变化监测和海洋学研究等方面发挥着重要作用。为了促进所有这些活动，部署在水下的无人驾驶飞行器或装置的数量在增加，这就需要高带宽和高容量的水下信息传输。虽然水声通信已经取得了巨大的进展，但是它受到了带宽的限制。所有这些都导致了水下光无线通信（UOWC）的激增，因为它提供了比传统的声通信系统更高的数据速率，而对于短距离无线链路来说，具有显著更低的功耗和更简单的计算复杂度。UOWC具有从深海到沿海沃茨的许多潜在应用。然而，水下无线通信面临的最大挑战来自海洋或海水的基本特性;应对这些挑战需要对复杂的生理化学生物系统有透彻的了解。本文的主要重点是了解由于影响系统性能的各种传播现象而导致的高数据速率水下光链路的可行性和可靠性。本文提供了一个详尽的概述，最近的进展UOWC。讨论了UOWC特有的信道特性、调制方案、编码技术和各种噪声源。本文不仅对水下光通信进行了详尽的研究，而且旨在为未来水下通信的发展提供新的思路。提出了一种声光通信系统的混合方法，其补充了现有的声学系统，导致了高数据速率、低等待时间和高能效的系统。
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.