An Underwater Time Reversal Communication Method Using Symbol-Based Doppler Compensation with a Single Sound Pressure Sensor

Anbang Zhao; Caigao Zeng; Juan Hui; Lin Ma; Xuejie Bi

doi:10.3390/s18103279

An Underwater Time Reversal Communication Method Using Symbol-Based Doppler Compensation with a Single Sound Pressure Sensor

Sensors (Basel). 2018 Sep 29;18(10):3279. doi: 10.3390/s18103279.

Authors

Anbang Zhao^{1

2

3

4}, Caigao Zeng^{5

6

7}, Juan Hui^{8

9

10}, Lin Ma^{11

12

13}, Xuejie Bi^{14

15

16}

Affiliations

¹ Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. zhaoanbang@hrbeu.edu.cn.
² Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China. zhaoanbang@hrbeu.edu.cn.
³ College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China. zhaoanbang@hrbeu.edu.cn.
⁴ National Key Laboratory of Science and Technology on Underwater Acoustic Antagonizing, China State Shipbuilding Corporation Systems Engineering Research Institute, Beijing 100036, China. zhaoanbang@hrbeu.edu.cn.
⁵ Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. cgzeng@hrbeu.edu.cn.
⁶ Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China. cgzeng@hrbeu.edu.cn.
⁷ College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China. cgzeng@hrbeu.edu.cn.
⁸ Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. huijuan@hrbeu.edu.cn.
⁹ Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China. huijuan@hrbeu.edu.cn.
¹⁰ College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China. huijuan@hrbeu.edu.cn.
¹¹ Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. malin@hrbeu.edu.cn.
¹² Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China. malin@hrbeu.edu.cn.
¹³ College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China. malin@hrbeu.edu.cn.
¹⁴ Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China. bixuejie@hrbeu.edu.cn.
¹⁵ Key Laboratory of Marine Information Acquisition and Security, Harbin Engineering University, Ministry of Industry and Information Technology, Harbin 150001, China. bixuejie@hrbeu.edu.cn.
¹⁶ College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China. bixuejie@hrbeu.edu.cn.

Abstract

Due to the significant multipath and Doppler effects in the underwater acoustic (UWA) channel, the quality of the received signal is degraded, which seriously affects the performance of UWA communication. The paper proposes a time reversal UWA communication method combined with a symbol-based Doppler compensation (SBDC) technique to solve those problems. A single element time reversal mirror (TRM) is used to realize channel equalization and mitigate the inter-symbol interference (ISI) resulting from multipath propagation. The SBDC technique is subsequently used to compensate Doppler effects in the received signal, thereby reducing the bit error rate (BER) and improving the communication performance. In order to verify the performance of the proposed communication method, some simulations with real sounding channels were performed. Moreover, a field UWA communication experiment was conducted in the Songhua River (Harbin, China). The UWA communication experiment achieves nearly error-free performance with a communication rate of 100 bit/s in the bandwidth of 2 kHz. The results of the experiment demonstrate the feasibility and robustness of the proposed UWA communication method.

Keywords: UWA communication; single pressure sensor; symbol-based Doppler compensation; time reversal mirror.