中文版 | English
Title

基于光纤水听器的OFDM水声通信研究

Alternative Title
RESEARCH ON OFDM UNDERWATER ACOUSTIC COMMUNICATION BASED ON OPTICAL FIBER HYDROPHONE
Author
Name pinyin
HUANG Keqin
School number
12032559
Degree
硕士
Discipline
0856 材料与化工
Subject category of dissertation
0856 材料与化工
Supervisor
宋章启
Mentor unit
创新创业学院
Publication Years
2022-05-13
Submission date
2022-06-30
University
南方科技大学
Place of Publication
深圳
Abstract

水声通信是目前水下中远距离无线通信的最佳方案,由于水声信道多途和时
变的特性,使得水声通信系统的实现面临很多困难。本文开展了基于光纤水听器
的正交频分复用(OFDM)水声通信关键技术研究。
开展了基于块状导频的自适应信道均衡技术的研究,针对 OFDM 通信进行了
LMS 和 RLS 自适应均衡算法仿真研究,验证了在水声信道的多径和时变影响下,
有效跟踪信道变化的能力,并获得了优化参数。
针对 OFDM 通信过程中存在的峰值平均功率比(PAPR)过大的问题,创新性
地提出了一种基于自适应信道均衡的相位随机抖动的方法,并进行了其原理的理
论推导、数字仿真验证和实验测试,结果表明其相较于传统 PAPR 抑制方法具有
对信号适应性好的特点,可以将任意输入信号的 PAPR 控制在 12dB 以内,同时无
论在发射端还是在接收端都没有增加额外计算量,且不需要消耗通信带宽。
最后,论文基于新型 Sagnac 光纤水听器系统开展了实际水声通信实验,利用
光纤水听器的高灵敏度特点,获得比压电水听器高 6dB 的信噪比信号,开展了在
实验室声压罐和水池条件的 OFDM 水声通信实验,成功进行了文本图片等数据的
传输。

Keywords
Language
Chinese
Training classes
独立培养
Enrollment Year
2020
Year of Degree Awarded
2022-07
References List

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Academic Degree Assessment Sub committee
创新创业学院
Domestic book classification number
V276
Data Source
人工提交
Document TypeThesis
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/343176
DepartmentSchool of Innovation and Entrepreneurship
Recommended Citation
GB/T 7714
黄可钦. 基于光纤水听器的OFDM水声通信研究[D]. 深圳. 南方科技大学,2022.
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