UHD Video Transmission over Bidirectional Underwater Wireless Optical Communication

Abdullah Al-Halafi, Basem Shihada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


In this paper, we experimentally demonstrate for the first time a bidirectional underwater wireless optical communication system that is capable of transmitting an ultrahigh definition real-time video using a downlink channel while simultaneously receiving the feedback messages on the uplink channel. The links extend up to 4.5 m using QPSK, 16-QAM, and 64-QAM modulations. The system is built using software defined platforms connected to TO-9 packaged pigtailed 520 nm directly modulated green laser diode (LD) with 1.2 GHz bandwidth as the optical transmitter for video streaming on the downlink, and an avalanche photodiode (APD) module as the downlink receiver. The uplink channel is connected to another pigtailed 450 nm directly modulated blue LD with 1.2 GHz bandwidth as the optical uplink transmitter for the feedback channel, and to a second APD as the uplink receiver. We perform laboratory experiments on different water types. The measured throughput is 15 Mb/s for QPSK, and 30 Mb/s for both 16 QAM and 64 QAM. We evaluate the quality of the received live video streams using peak signal-to-noise ratio and achieve values up to 16 dB for 64 QAM when streaming UHD video in harbor II water and 22 dB in clear ocean.

Original languageEnglish (US)
Article number7902914
JournalIEEE Photonics Journal
Issue number2
StatePublished - Apr 2018

Bibliographical note

Publisher Copyright:
© 2012 IEEE.


  • OFDM
  • QAM
  • QPSK
  • ROV
  • UHD video
  • Underwater communication
  • bi-directional wireless optical communication
  • diode lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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