一种视线/非视线识别方法,基于全面特征的动态多层次优化
Ziyao Ma1, Zhongliang Deng1, Zidu Tian1
1School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Sensors (Basel, Switzerland)
|January 25, 2025
概括
本研究引入了一种新的深度学习模型,用于准确识别视线 (LOS) 和非视线 (NLOS) 5G信号传播. 这通过提高信号测量精度,提高了复杂环境中的高精度定位.
科学领域:
- 无线通信是一种无线通信.
- 信号处理 信号处理
- 深度学习是一种深度学习.
背景情况:
- 使用5G信号的高精度定位对于应急救援和智能工厂等应用至关重要.
- 在复杂的环境中非视线 (NLOS) 传播会降低5G信号测量精度,影响定位.
- 准确识别视线 (LOS) 和NLOS信号传播对于可靠的定位至关重要.
研究的目的:
- 提出一种新的深度学习模型,即全面特征 (DMOCF) 网络的动态多层次优化,用于准确的LOS/NLOS识别.
- 增强5G频道脉冲响应 (CIR) 信号深度模型的特征提取和理解能力.
- 提高网络参数搜索的效率和准确性,以提高模型性能.
主要方法:
- 通过将Res2模块和Squeeze和Excitation (SE) 块集成到一个时延神经网络 (TDNN) 中,开发了DMOCF网络.
- 整合了带有位置编码的 mamba 模块,以捕获本地信号模式和时间演变.
- 采用了改进的沙猫搜索算法来优化网络参数.
主要成果:
- DMOCF模型在分类5G通道冲动响应 (CIR) 信号方面表现出卓越的性能.
- 与现有的深度学习方法相比,拟议的方法在NLOS/LOS识别方面取得了更高的准确性.
- 该模型有效地确定了多路信号传播的关键特征.
结论:
- DMOCF网络架构有效地将本地和全球特征提取与时间序列建模相结合,以改进信号分类.
- 拟议的NLOS/LOS识别方法在复杂的5G环境中显著提高了定位准确性.
- 这项研究为在具有挑战性的无线条件下可靠的高精度定位提供了强大的解决方案.
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