面向全双工单载波水声通信相位补偿自干扰抵消方法

吴颂文; 陆胤亨; 周锋; 青昕; 李岩龙; 赵梓琛

doi:10.11993/j.issn.2096-3920.2025-0157

面向全双工单载波水声通信相位补偿自干扰抵消方法

doi: 10.11993/j.issn.2096-3920.2025-0157

吴颂文^{1, 2, 3, 4,},
陆胤亨^5,,
周锋^{1, 2, 3, 4,},
青昕^{1, 2, 3, 4,},
李岩龙^{1, 2, 3, 4,},
赵梓琛^{1, 2, 3,}

1.
哈尔滨工程大学水声技术全国重点实验室, 黑龙江哈尔滨, 150001
2.
工业和信息化部海洋信息获取与安全工信部重点实验室(哈尔滨工程大学), 黑龙江哈尔滨, 150001
3.
哈尔滨工程大学水声工程学院, 黑龙江哈尔滨, 150001
4.
哈尔滨工程大学三亚南海创新发展基地, 海南三亚, 572024
5.
汉江国家实验室, 湖北武汉, 430060

基金项目: 黑龙江省自然科学基金(JQ2023A004); 中央高校基本科研业务费(3072025ZN0505).

详细信息

作者简介:
吴颂文(1998-), 男, 在读博士, 主要研究方向为水声通信

中图分类号: TJ630.34; U666.7
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- 被引次数: 0
出版历程
- 收稿日期: 2025-11-19
- 修回日期: 2025-12-24
- 录用日期: 2025-12-25
- 网络出版日期: 2026-01-12

Phase Compensation Self-interference Cancellation Method for Full-duplex Single-carrier Underwater Acoustic Communication

WU Songwen^{1, 2, 3, 4
,},
LU Yinheng^5
,,
ZHOU Feng^{1, 2, 3, 4
,},
QING Xin^{1, 2, 3, 4
,},
LI Yanlong^{1, 2, 3, 4
,},
ZHAO Zichen^{1, 2, 3
,}

1.
National Key Laboratory of Underwater Acoustic Technology, 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
4.
Sanya Nanhai Innovation and Development Base of Harbin Engineering University, Sanya 572024, China
5.
Hanjiang National Laboratory, Wuhan, 430060

摘要

摘要: 针对带内全双工水声通信中, 由于收发采样相位失配导致自干扰抵消性能下降的问题, 本文提出了一种在单载波通信中通过两阶段相位补偿来提高自干扰抵消的方法。传统方法假设参考信号与接收信号相位一致, 在此前提下直接进行抵消。与此不同, 本文将相位补偿引入参考信号的构造过程, 以残余能量最小为优化目标。该方法首先基于参考信号与接收信号相关性联合估计初步相位, 并在此结果的领域中进一步精细搜索, 寻找最优补偿相位并补偿, 结合自适应滤波算法提高自干扰抵消能力。通过对单频信号与QPSK信号的仿真, 并进行水池与海上实验, 对所提方法的有效性进行验证。结果表明, 经相位补偿后, 系统自干扰抵消效果提升, 在水池实验中的自干扰抵消性能提升5.289 dB, 海试实验中提升1.986 dB, 且经补偿后远端信号解调相关峰主旁瓣比得到优化。本文所提的相位补偿方法能有效提升自干扰抵消效果与滤波器收敛速度, 从而提高系统解调的准确性, 为全双工水声通信的实际应用提供了关键技术支撑。
- 全双工水声通信 /
- 自干扰抵消 /
- 相位补偿 /
- 单载波 /
- 自适应滤波
Abstract: Aiming at the problem that the self-interference cancellation performance is degraded due to the phase mismatch between the transmitting and receiving samples in the in-band full-duplex underwater acoustic communication, this paper proposes a method to improve the self-interference cancellation through two-stage phase compensation in single-carrier communication. The traditional method assumes that the phase of the reference signal is consistent with the phase of the received signal, and directly cancels under this premise. In contrast, this paper introduces phase compensation into the construction process of the reference signal, and takes the minimum residual energy as the optimization goal. This method first estimates the initial phase based on the correlation between the reference signal and the received signal, and further searches in the field of this result to find the optimal compensation phase and compensate, and combines the adaptive filtering algorithm to improve the self-interference cancellation ability. The effectiveness of the proposed method is verified by the simulation of single frequency signal and QPSK signal, the pool experiments and sea experiments. The results show that after phase compensation, the self-interference cancellation performance of the system is improved, the self-interference cancellation performance in the pool experiment is improved by 5.289 dB, and the self-interference cancellation performance in the sea trial experiment is improved by 1.986 dB. After compensation, the main side lobe ratio of the correlation peak of the far-end signal demodulation is optimized. The phase compensation method proposed in this paper can effectively improve the self-interference cancellation performance and filter convergence speed, thereby improving the accuracy of system demodulation, and providing key technical support for the practical application of full-duplex underwater acoustic communication.
- Full-duplex underwater acoustic communication /
- self-interference cancellation /
- phase compensation /
- single carrier /
- adaptive filtering

HTML全文

图 1 单载波全双工水声通信系统

Figure 1. Single-carrier full-duplex underwater acoustic communication system

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图 2 相位调整的自干扰抵消算法

Figure 2. Phase-adjusted self-interference cancellation algorithm

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图 3 不同相位误差下抵消深度

Figure 3. Cancellation depth under different phase errors

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图 4 单频信号不同相位补偿后的自干扰抵消频谱能量对比

Figure 4. Comparison of self-interference cancellation spectrum energy after different phase compensation of single-frequency signal

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图 5 初始相位为5°不同相位补偿后的自干扰抵消频谱能量对比

Figure 5. Comparison of self-interference cancellation spectrum energy after different phase compensation with initial phase of 5 °

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图 6 基于QPSK调制的单载波信号相位补偿前后后的自干扰抵消结果

Figure 6. Self-interference cancellation results before and after phase compensation of single carrier signal based on QPSK modulation

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图 7 水池实验示意图及现场布置图

Figure 7. Schematic diagramand layout of pool experiment site

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图 8 不同相位补偿值下的抵消效果增加量

Figure 8. The increase of suppression effect under different phase compensation values

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图 9 相位补偿前后自干扰抵消结果对比

Figure 9. Comparison of self-interference cancellation results before and after phase compensation

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图 10 相位补偿前后NMSE对比

Figure 10. Comparison of NMSE before and after phase compensation

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图 11 海试实验场景示意图

Figure 11. Sea trial experiment scene schematic diagram

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图 12 相位补偿前后自干扰抵消结果对比

Figure 12. Comparison of self-interference cancellation results before and after phase compensation

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图 13 相位补偿前后主峰与旁瓣对比

Figure 13. Comparison of main peak and side lobe before and after phase compensation

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