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Performance Evaluation of Underwater Optical Wireless Communication Depending on the Modulation Scheme

  • Jeong, Gabin (Department of Electronic Engineering, Kyungsung University) ;
  • Kim, Sung-Man (Department of Electronic Engineering, Kyungsung University)
  • Received : 2021.10.22
  • Accepted : 2021.12.30
  • Published : 2022.02.25

Abstract

Underwater optical wireless communication (UOWC) is a good candidate for high-speed underwater wireless communication. In this work, we compare the performance of several modulation techniques for a UOWC system consisting of a light-emitting diode (LED) with an operating wavelength of 405 nm and a Si avalanche photodiode (APD). In this work, we consider six modulation schemes: 4-quadrature amplitude modulation (QAM), 8-QAM, quadrature phase shift keying (QPSK), binary phase shift keying (BPSK), on-off keying (OOK), and 4-pulse amplitude modulation (PAM). We also consider the cases of pure water and seawater for the working conditions. Our results show that 4-QAM and 8-QAM perform the best, in terms of communication distance and transmission power efficiency, for all water types considered.

Keywords

Acknowledgement

National Research Foundation of Korea (NRF) grant, funded by the Korean government (Ministry of Education) (No. NRF-2021R1I1A3047031); National Research Foundation of Korea (NRF) grant, funded by the Korean government (MSIT) (No. NRF-2019R1F1A1045956).

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