低复杂度的代接收器,基于多输入多输出水下声通信的变量贝叶斯推理
Wei-Zhe Li1,2, Xiao Han1,3, Yi-Zhen Jia1,2
1National Key Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China.
The Journal of the Acoustical Society of America
|February 13, 2026
概括
本研究介绍了一种低复杂度的接收器,用于使用变量贝叶斯推理 (VBI) 的水下声通信. 该方法增强了通道估计和等级,大大降低了多输入多输出 (MIMO) 系统的计算负载.
科学领域:
- 水下声学通讯水下声学通讯
- 信号处理 信号处理
- 信息理论 信息理论
背景情况:
- 高性能接收器对于水下声学通信至关重要,特别是在多输入多输出 (MIMO) 系统中.
- 在这些苛刻的环境中,管理接收器的复杂性是关键的挑战.
研究的目的:
- 提出一个低复杂度的MIMO接收器用于水下声学通信.
- 通过使用变量贝叶斯推理 (VBI) 提高通道估计和均等效率.
主要方法:
- 开发了一个基于VBI的代通道估计模型,将高维通道分解为稀疏的低维向量.
- 将矢量近似消息传递 (VAMP) 技术集成到通道估计 (TC-VAMP-VBI) 的 VBI 框架中.
- 在VBI框架内提出了一种使用被动时间逆转的串行代等效算法.
主要成果:
- 拟议的算法大大降低了MIMO系统中的计算复杂性.
- 保持了强大的通道估计性能,即使是短数据块.
- 通过模拟和实地实验数据验证.
结论:
- 基于VBI的低复杂度MIMO接收器为水下声学通信提供了一个实用的解决方案.
- TC-VAMP-VBI通道估计和被动时间逆转等级有效地减少了系统复杂性,同时确保了性能.
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