Novel Spread Spectrum Based Underwater Acoustic Communication Technology for Low Signal-to-Noise Ratio Environments

被引：2

作者：

Zhou, Feng ^{[1
,2
,3
]}

Zhang, Wenbo ^{[1
,2
,3
]}

Qiao, Gang ^{[1
,2
,3
]}

Sun, Zongxin ^{[1
,2
,3
]}

Liu, Bing ^{[1
,2
,3
]}

Zheng, Wenting ^{[1
,2
,3
]}

Li, Liang ^{[4
]}

机构：

[1] Harbin Engn Univ, Acoust Sci & Technol Lab, Harbin 150001, Peoples R China

[2] Harbin Engn Univ, Key Lab Marine Informat Acquisit & Secur, Minist Ind & Informat Technol, Harbin 150001, Peoples R China

[3] Harbin Engn Univ, Coll Underwater Acoust Engn, Harbin 150001, Peoples R China

[4] China State Shipbldg Corp, Syst Engn Res Inst, Beijing 100036, Peoples R China

来源：

INTELLIGENT ROBOTICS AND APPLICATIONS, ICIRA 2019, PT II | 2019年 / 11741卷

关键词：

Underwater acoustic communication; Spread spectrum communication; Hybrid spread spectrum;

D O I：

10.1007/978-3-030-27532-7_40

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Underwater acoustic channels are unstable and acoustic waves when propagating in the ocean are subjected to variety of interference, such as noise, reflections, scattering and so on. To cope with this severe interference, spread spectrum communication technology is used. The traditional spread spectrum communication technology can communicate reliably in a lower signal-to-noise ratio environment, but at the cost of lower data rate. This paper thus proposes an underwater acoustic spread spectrum communication technology, which combines direct sequence spread spectrum and cyclic shift keying modulation to improve the data rate. Besides, a time-frequency two-dimensional search algorithm is used to realize the synchronization of this system. In order to reduce the bit error rate, the hybrid system is improved by adjusting power allocation of the transmitted signal. The performance of the proposed system is analyzed by the simulation and is verified by the experiment.

引用

页码：449 / 460

页数：12

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