基于代检测的时间域自适应性决策反等级化,用于水下声通信的连续相调制
Ruigang Han1,2,3, Ning Jia1,2,3, Yunfei Li1,2,3
1Institute of Acoustics, Chinese Academy of Sciences, Beijing, 100190, China.
The Journal of the Acoustical Society of America
|March 19, 2025
概括
连续相调制 (CPM) 为水下声学 (UWA) 通信提供了效率. 一个新的基于代检测的时间域自适应性决策反均等 (ID-TDADFE) 算法通过减少位错误显著提高了UWA通信性能.
科学领域:
- 电气工程 电气工程
- 信号处理 信号处理
- 水下通信是指水下通信.
背景情况:
- 连续相调制 (CPM) 对于航空和卫星系统是有效的.
- 传统的频域平衡 (FDE) 与时间变化的水下声学 (UWA) 通道发生冲突.
- 现有的时间域均等算法经常使用近似,降低符号检测.
研究的目的:
- 引入一个基于代检测的时间域自适应性决策反均等 (ID-TDADFE) 算法.
- 为了提高UWA通信系统中使用CPM信号的符号检测性能.
- 为了解决因时间变化的UWA频道造成的性能下降.
主要方法:
- 开发了一个ID-TDADFE算法,用于符号对符号的检测.
- 集成的联合概率估计来增强符号检测.
- 使用最小变速键 (MSK) 和高斯式MSK信号评估性能.
主要成果:
- ID-TDADFE在1-2次代内显著提高了与时间变化的UWA通道的通信性能.
- 与传统方法相比,数值模拟显示了相当大的收益.
- 与FDE.相比,在第一次和第二次代后,海上试验显示比特错误减少了45.08%和51.8%,分别减少了比特错误.
结论:
- 拟议的ID-TDADFE算法有效地跟踪UWA系统中的通道变化.
- 它通过利用CPM的编码收益和联合概率估计来增强符号检测.
- ID-TDADFE为使用CPM信号的可靠UWA通信提供了卓越的解决方案.
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