Study on Self-interference Problem in Full-duplex Underwater Wireless Optical Communication System

WANG Jie; FAN Ting-wei; SHEN Ling-fei; HUANG Zhi-wei; CHI Nan; ZHOU Tian-hua

doi:10.13756/j.gtxyj.2023.04.006

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Study on Self-interference Problem in Full-duplex Underwater Wireless Optical Communication System

更新时间：2023-08-14

- Study on Self-interference Problem in Full-duplex Underwater Wireless Optical Communication System
- Study on Optical Communications Issue 4, Pages: 28-33(2023)
- 作者机构：
  
  1.复旦大学　通信科学与工程系　电磁波信息科学教育部重点实验室，上海　200433
  2.中国科学院上海光学精密机械研究所　空间激光信息传输与探测技术重点实验室，上海　201800
  3.上海理工大学　光电信息与计算机工程学院，上海　200093
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2023.04.006
  CLC： TN929
- Published：10 August 2023，
  
  Received：21 March 2023，
  
  Revised：04 April 2023，
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王杰，范婷威，申玲菲，等.全双工水下无线光通信系统自干扰问题研究[J].光通信研究，2023(4):28-33.

Wang J, Fan T W, Shen L F, et al. Study on Self interference Problem in Full duplex Underwater Wireless Optical Communication System [J]. Study on Optical Communications, 2023(4):28-33.
王杰，范婷威，申玲菲，等.全双工水下无线光通信系统自干扰问题研究[J].光通信研究，2023(4):28-33. DOI： 10.13756/j.gtxyj.2023.04.006.

Wang J, Fan T W, Shen L F, et al. Study on Self interference Problem in Full duplex Underwater Wireless Optical Communication System [J]. Study on Optical Communications, 2023(4):28-33. DOI： 10.13756/j.gtxyj.2023.04.006.

摘要

针对全双工水下无线光通信（FD-UWOC）系统中存在的自干扰限制系统通信性能的问题，文章提出了一种双波长收发分离的方法。基于Monte Carlo数值仿真方法，在Jerlov I、Jerlov IB和Jerlov II 3种典型水质下，分析了自干扰对450 nm单波长、525 nm单波长和双波长FD-UWOC系统性能的影响情况。仿真结果表明，水质越差，自干扰越强，并且自干扰的增强会显著降低FD-UWOC的光信噪比（OSNR），进而限制了系统的最远传输距离；采用双波长收发分离方法的FD-UWOC系统相较于单波长FD-UWOC系统能带来约60 dB的OSNR提升，从而可以实现更远的传输距离，其中，在Jerlov II类水质下传输距离提升了80 m，并能在Jerlov I和Jerlov IB类水质下实现大于100 m的有效传输距离。这些结果在FD-UWOC系统设计中具有一定的参考意义。

Abstract

A dual-wavelength transceiver separation method is proposed for the problem of self-interference limiting the system communication performance in Full-Duplex Underwater Wireless Optical Communication (FD-UWOC) systems. Based on the Monte Carlo numerical simulation

the effects of self-interference on the performance of 450 nm single-wavelength

525 nm single-wavelength and dual-wavelength FD-UWOC systems are analyzed under three typical water qualities of Jerlov I

Jerlov IB and Jerlov II. The simulation results show that the poorer the water quality

the stronger the self-interference. It is also shown that the enhancement of self-interference will significantly reduce the Optical Signal to Noise Ratio (OSNR) of FD-UWOC

which limits the longest transmission distance of the system. The FD-UWOC system using the dual-wavelength transceiver separation method can bring about 60 dB improvement in OSNR compared with the single-wavelength FD-UWOC system

which can achieve a longer transmission distance. An 80 m improvement in Jerlov II water quality

and an effective transmission distance of more than 100 m in Jerlov I and Jerlov IB water quality are achieved. These results provide some reference significance to the design of FD-UWOC system.

关键词

全双工水下无线光通信Monte Carlo方法自干扰后向散射双波长

Keywords

FD-UWOCMonte Carlo methodself-interferencebackscatteringdual-wavelength

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