Underwater Acoustic Spread Spectrum Communications Based on Space-Time Cluster Processing

ZHOU Feng; ZHANG Wenbo; ZHANG Baosheng; NIE Donghu; WANG Yang; LIU Bing

doi:10.11999/JEIT211398

Volume 44 Issue 6

Jun. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(6): 2006-2013

ZHOU Feng, ZHANG Wenbo, ZHANG Baosheng, NIE Donghu, WANG Yang, LIU Bing. Underwater Acoustic Spread Spectrum Communications Based on Space-Time Cluster Processing[J]. Journal of Electronics & Information Technology, 2022, 44(6): 2006-2013. doi: 10.11999/JEIT211398

Citation:

ZHOU Feng, ZHANG Wenbo, ZHANG Baosheng, NIE Donghu, WANG Yang, LIU Bing. Underwater Acoustic Spread Spectrum Communications Based on Space-Time Cluster Processing[J]. Journal of Electronics & Information Technology, 2022, 44(6): 2006-2013. doi: 10.11999/JEIT211398

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Underwater Acoustic Spread Spectrum Communications Based on Space-Time Cluster Processing

doi: 10.11999/JEIT211398

1.
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
2.
Key Laboratory of Marine Information Acquisition and Security(Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
3.
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China

Funds: The National Natural Science Foundation of China (11974090)

Received Date: 2021-12-01
Rev Recd Date: 2022-03-29

Available Online: 2022-04-17

Publish Date: 2022-06-21

Abstract

Abstract

Due to the serious interference in the ocean, underwater acoustic communications are very difficult. Spread spectrum communication technology has good anti-interference performance, and it can ensure reliable communications in complex marine environment, it is often used in underwater acoustic communications. Underwater acoustic channels are typical coherent multipath channels. The signals arriving along different paths have different propagation delays and angles of arrival, so received signals have space-time clustering characteristic. That is, received signals have time delay spread and angle spread. The coherent superposition of multipath signals leads to serious inter symbol interference in received signals. In order to take advantage of the space-time clustering characteristic of the underwater acoustic signals, a space-time processor is designed to filter the signals arriving along each path respectively. The reliability of the communication system can be effectively improved by combining the diversity of space-time clusters. An underwater acoustic spread spectrum communication scheme is proposed based on space-time cluster processing. This communication scheme is compared and analyzed in the simulation and the experiment, to verify its performance advantages.
- Underwater communication,
- Spread spectrum communication,
- Array signal processing

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References(18)

References

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