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.

© 2022 Optical Society of Korea

Towards underwater coherent optical wireless communications using a simplified detection scheme

Xinke Tang, Rupesh Kumar, Caiming Sun, Long Zhang, Zhen Chen, Rui Jiang, Hongjie Wang, and Aidong Zhang
Opt. Express 29(13) 19340-19351 (2021)

100 m/500 Mbps underwater optical wireless communication using an NRZ-OOK modulated 520 nm laser diode

Jiemei Wang, Chunhui Lu, Shangbin Li, and Zhengyuan Xu
Opt. Express 27(9) 12171-12181 (2019)

Real-Time Video Transmission Over Different Underwater Wireless Optical Channels Using a Directly Modulated 520  nm Laser Diode

Abdullah Al-Halafi, Hassan Makine Oubei, Boon S. Ooi, and Basem Shihada
J. Opt. Commun. Netw. 9(10) 826-832 (2017)

2.3 Gbit/s underwater wireless optical communications using directly modulated 520 nm laser diode

Hassan Makine Oubei, Changping Li, Ki-Hong Park, Tien Khee Ng, Mohamed-Slim Alouini, and Boon S. Ooi
Opt. Express 23(16) 20743-20748 (2015)

Underwater optical wireless communication performance enhancement using 4D 8PAM trellis-coded modulation OFDM with DFT precoding

Lin Xu, Jing He, Zhihua Zhou, and Yaoqiang Xiao
Appl. Opt. 61(10) 2483-2489 (2022)