一个新的非接触式多用户在线室内定位策略,基于频道状态信息
Yixin Zhuang1, Yue Tian1, Wenda Li2
1Science and Engineering, Xiamen University of Technology, No. 600, Ligong Road, Jimei District, Xiamen 361024, China.
Sensors (Basel, Switzerland)
|November 9, 2024
概括
使用IEEE 802.11bf WiFi和一种名为NKCK的新型机器学习 (ML) 方法的新室内定位传感策略显著减少了定位错误. 这种方法可以在现实世界的无线环境中提高多用户在线定位的准确性.
科学领域:
- 无线通信和网络是无线的.
- 机器学习应用程序 机器学习应用程序
- 室内定位系统 室内定位系统
背景情况:
- 对于室内定位,IEEE 802.11bf WiFi正在出现.
- 多用户在线定位在真实无线环境中存在挑战.
- 准确的室内定位对于各种应用至关重要.
研究的目的:
- 提出一个优化的室内定位传感策略.
- 引入一种新的机器学习 (ML) 方法,NKCK,以提高定位精度.
- 与传统方法相比,评估NKCK方法的性能.
主要方法:
- 该NKCK方法集成了邻近组件分析 (NCA) 以减少维度,K-平均集群和K-最近邻居 (KNN) 分类与交叉验证 (CV).
- 使用频道状态信息 (CSI) 幅度指纹.
- 该战略包括一个优化的预处理步骤.
主要成果:
- 与各种传统方法相比,NKCK方法显示出显著的错误率降低.
- 实现的错误率降低包括82.4%与82.4%相比. 纯粹的贝斯,85.0%与随机森林相比,72.1%与支持矢量机器相比.
- 超过基于PCA和基于LDA的CSI振幅指纹的指纹方法.
结论:
- 与现有的技术相比,拟议的NKCK方法在室内定位方面提供了更高的性能.
- 该系统在复杂的无线环境中显示了多用户在线定位的前景.
- 需要进一步的研究,以解决探测动态人类活动的挑战,例如由于CSI敏感性的跟踪.
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