[1]开诚治,刘天颀,王青东,等.基于轨道角动量谱分解的多通道水声通信及系统实现[J].南京师大学报(自然科学版),2024,(01):103-110.[doi:10.3969/j.issn.1001-4616.2024.01.012]
　Kai Chengzhi,Liu Tianqi,Wang Qingdong,et al.Multi-channel Underwater Acoustic Communication and System Implementation Based on Orbital Angular Momentum Spectrum Decomposition[J].Journal of Nanjing Normal University(Natural Science Edition),2024,(01):103-110.[doi:10.3969/j.issn.1001-4616.2024.01.012]
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基于轨道角动量谱分解的多通道水声通信及系统实现()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
期数:
2024年01期
页码:
103-110
栏目:
计算机科学与技术
出版日期:
2024-03-15

文章信息/Info

Title:
Multi-channel Underwater Acoustic Communication and System Implementation Based on Orbital Angular Momentum Spectrum Decomposition
文章编号:
1001-4616(2024)01-0103-08
作者:
开诚治1; 刘天颀1; 王青东2; 李禹志1; 郭各朴1; 马青玉1
(1.南京师范大学计算机与电子信息学院/人工智能学院,江苏 南京 210023)
(2.山东科技大学海洋工程学院,山东 青岛 266590)
Author(s):
Kai Chengzhi1; Liu Tianqi1; Wang Qingdong2; Li Yuzhi1; Guo Gepu1; Ma Qingyu1
(1.School of Computer and Electronic Information & School of Artificial Intelligence,Nanjing Normal University,Nanjing 210023,China)
(2.College of Ocean Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China)
关键词:
多通道水声通信; 轨道角动量复用; 环形收发阵列; 全息信号; 谱分解
Keywords:
multichannel underwater acoustic communication; orbital angular momentum multiplexing; circular transceiver array; holographic signal; spectrum decomposition
分类号:
O424
DOI:
10.3969/j.issn.1001-4616.2024.01.012
文献标志码:
A
摘要:
水声通信能够实现信息的长距离传输,在深海探索和军事领域发挥重要作用. 然而,由于换能器带宽和声波波长的影响,水声通信的发展与应用受到传输衰减大和信道容量低以及频谱利用率不足的限制. 本文结合复用涡旋声束(AV)和轨道角动量(OAM)谱分解技术,研究了基于环形收发阵列的多通道水声通信方法,并系统实现. 基于发送数据的ASCII编码,利用全息信号的幅度和相位调制,驱动环形换能器阵列发射沿轴传输的多通道OAM复用涡旋声束,并通过环形换能器阵列的信号采样和OAM谱分解完成复用涡旋声束的OAM模态解码,实现了高效的并行数据传输. 构建了8声源环形收发阵列和全息相控系统,开展了6通道水声通信研究,成功实现了复用涡旋声场的实验测量和OAM解码,并与传统单通道二进制串行数据通信进行性能比较. 理论和实验结果证明,基于OAM谱分解的通信通道数由发射阵列的阵元数N决定,其解码精度由发射信号的相位精度和接收阵列的阵元数决定; 阵元数N≥1的大阵列系统在满OAM模式复用条件下的传输速率约为传统水声通信的N倍. 本研究表明基于OAM谱分解的多通道通信可大幅提高信道容量和频谱利用率,为其在水声通信中的实际应用提供了一种实用方案.
Abstract:
As an important part of modern communication,the underwater acoustic communication can realize long-distance information transmission and play an important role in the fields of deep-sea exploration and military. However,due to the narrow bandwidth of the transducer and the long wavelength of acoustic waves,the application of the traditional underwater acoustic communication is still limited by the large attenuation,low channel capacity and insufficient spectrum utilization. In this paper,the multi-channel underwater acoustic communication using circular transceiver arrays is established by combining the multiplexing of acoustic-vortex(AV)beams and the orbital angular momentum(OAM)spectrum decomposition. Based on the ASCII code of transmitted data,holographic signals of amplitude and phase modulation are used to drive the transmitter array to generate multi-channel OAM-multiplexed beam. Through circular acoustic sampling and OAM spectrum decomposition,the OAM modes carried in the multiplexed AV are decoded successfully to realize the high-efficient data transmission in parallel. The experimental 6-channel underwater acoustic communication is carried out with the 8-source circular transceiver arrays. The field measurement and OAM decoding of the OAM-multiplexed AVs are accomplished,and the performance of data communication is compared with that of the traditional one-channel serial one. Theoretical and experimental results show that the channel number based on OAM spectrum decomposition is determined by the source number N of the transmitter array,and the decoding accuracy is decided by the phase accuracy of the transmitters and sampling number of the receiver array. For a large system of N transceivers with N≥1,the transmission speed is proved to be about N larger than times that of the traditional acoustic communication system at a same baud rate. The multi-channel technology can greatly improve the channel capacity and the efficiency of spectrum utilization,and provides a practical scheme for its practical application in underwater acoustic communication.

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备注/Memo

备注/Memo:
收稿日期:2023-02-25.
基金项目:国家自然科学基金项目(11934009、11974187、12174198、12227808)、江苏省自然科学基金项目(BE2022814).
通讯作者:马青玉,博士,教授,博士生导师,研究方向:声学、电子技术和生物医学物理.E-mail:maqingyu@njnu.edu.cn
更新日期/Last Update: 2024-03-15