基于分布式水下声通信系统的空间多样性处理机制.
Manli Zhou1, Hao Zhang1,2, Tingting Lv1
1Department of Electronic Engineering, Ocean University of China, Qingdao, Shandong, China.
PloS one
|January 2, 2024
概括
本研究介绍了一个分布式的水下声学多样性通信系统 (DUA-DCS),以克服浅水通信挑战. 通过先进的信号处理技术,DUA-DCS系统显著提高了可靠性,并降低了位误差率.
科学领域:
- 水下声学通讯水下声学通讯
- 信号处理 信号处理
- 通信系统工程 通信系统工程
背景情况:
- 浅水声波通信面临信号延迟和多路径效应的挑战.
- 由于这些环境因素,单环系统表现出不可靠性.
研究的目的:
- 提出一个分布式的水下声学多样性通信系统 (DUA-DCS),以提高可靠性.
- 开发先进的信号处理技术,用于上链和下链通信.
主要方法:
- 上链:决策反等分器嵌入式相锁循环和最大信号与干扰比相结合 (DFE-PLL-MSIRC) 用于波形水平多样性结合.
- 下链接:复杂的正交时空块编码 (COSTBC) 与一个通用的复杂的正交传输矩阵.
- 利用可操纵的分布式跨介质浮标网络建立并行通信链接.
主要成果:
- 与单环系统相比,DFE-PLL-MSIRC实现了超过5.2dB的多样性增长,并将BER降低了至少一个数量级.
- 与单一链路系统相比,拟议的下行链路COSTBC实现了超过6dB的多样性增长.
- DFE-PLL-MSIRC显示了大约3dB的多样性增长比比较算法.
结论:
- 采用DFE-PLL-MSIRC和COSTBC的DUA-DCS有效地减轻了浅水声通信问题.
- 拟议的系统在多样性增益和比特错误率降低方面取得了显著的改进.
- 这项研究为可靠的水下声学通信提供了强大的解决方案.
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