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基于现场可编程门阵列（FPGA）的、使用16正交幅度调制（16-QAM）的450纳米激光二极管的水下无线光通信系统

Underwater wireless optical communication system using a 16-QAM modulated 450-nm laser diode based on an FPGA.

作者信息

Wang Jingjing, Tian Changfeng, Yang Xinghai, Shi Wei, Niu Qiuna, Aaron Gulliver T

出版信息

Appl Opt. 2019 Jun 1;58(16):4553-4559. doi: 10.1364/AO.58.004553.

DOI:10.1364/AO.58.004553

PMID:31251271

Abstract

An underwater wireless optical communication (UWOC) system with a 450-nm laser diode and a 150-MHz PIN photodiode is presented. The 16-ary quadrature amplitude modulation scheme is employed and realized on a field-programmable gate array (FPGA) to efficiently provide a high data rate. Experimental results show that this system can achieve data rates up to 50 Mbps over a distance of 3 m underwater with a bit error rate (BER) of 7.11×10 in artificial seawater at 35‰ salinity, where the attenuation coefficient is 0.481. This BER is below the forward error correction target of 3.8×10. Thus, this system can provide reliable high-speed communications over short to moderate distance point-to-point UWOC links.

摘要

本文介绍了一种采用450纳米激光二极管和150兆赫PIN光电二极管的水下无线光通信（UWOC）系统。采用16进制正交幅度调制方案，并在现场可编程门阵列（FPGA）上实现，以高效提供高数据速率。实验结果表明，该系统在盐度为35‰的人工海水中，水下3米的距离上，误码率（BER）为7.11×10时，可实现高达50Mbps的数据速率，此时衰减系数为0.481。该误码率低于3.8×10的前向纠错目标。因此，该系统可以在短到中等距离的点对点UWOC链路上提供可靠的高速通信。