Narrow-beam optical communications in underwater wireless network with passive node mobility

Robert Webster, Kumudu Munasinghe, Abbas Jamalipour

Research output: A Conference proceeding or a Chapter in BookConference contributionpeer-review

2 Citations (Scopus)


Underwater wireless sensor networks are garnering a greater research interest as human's endeavor to investigate deeper into the depths of the ocean. However, infrastructure is currently lacking in underwater communications. Acoustic communications have been long the preferred method, however, as applications become more resource intensive, the low bit rates and high latency of acoustic communications require the use of optical or electromagnetic communications. In this research, we propose a surface-to-floor optical link capable of carrying higher bit rates and with a much improved latency. However, much research in underwater optical communications does not take into account passive node mobility. Passive node mobility is caused by water currents moving nodes in jet streams and vortices. We therefore introduced a mobility model to our research to better simulate the underwater communications channel. Passive node mobility can cause transmitter and receiver misalignment, a problem for free space optical communications. This misalignment can also introduce a greater temporal spread in received photons further degrading the links performance. It was found that when both the transmitter and receiver exhibited passive node mobility, the temporal spread increased greatly and Inter Symbol Interference which could produce higher bit error rates than previously suggested in literature.

Original languageEnglish
Title of host publication2017 IEEE International Conference on Communications, ICC 2017
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)9781467389990
ISBN (Print)9781467389990
Publication statusPublished - 28 Jul 2017
EventIEEE International Conference on Communications 2017 - Paris, France
Duration: 21 May 201725 May 2017

Publication series

NameIEEE International Conference on Communications


ConferenceIEEE International Conference on Communications 2017
Abbreviated titleICC 2017


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