Indoor localization method based on CSI in complex environment

Xiaochao DANG; Xiong SI; Zhanjun HAO; Yaning HUANG; Yili HEI

doi:10.11959/j.issn.2096-3750.2018.00077

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Indoor localization method based on CSI in complex environment

Theory and Technology | 更新时间：2024-06-05

- Indoor localization method based on CSI in complex environment
- Chinese Journal on Internet of Things Vol. 2, Issue 4, Pages: 68-77(2018)
- 作者机构：
  
  1. 西北师范大学计算机科学与工程学院，甘肃兰州 730070
  2. 甘肃省物联网工程研究中心，甘肃兰州 730070
- 作者简介：
- 基金信息：
- DOI：10.11959/j.issn.2096-3750.2018.00077
  CLC： TP301.6
- Published：30 December 2018，
  
  Published Online：2018-12，
- 稿件说明：
移动端阅览
XIAOCHAO DANG, XIONG SI, ZHANJUN HAO, et al. Indoor localization method based on CSI in complex environment. [J]. Chinese journal on internet of things, 2018, 2(4): 68-77.
DOI：

XIAOCHAO DANG, XIONG SI, ZHANJUN HAO, et al. Indoor localization method based on CSI in complex environment. [J]. Chinese journal on internet of things, 2018, 2(4): 68-77. DOI： 10.11959/j.issn.2096-3750.2018.00077.

摘要

信道状态信息（CSI

channel state information）可以提供更详细具体的子载波信息，在室内定位技术领域引起研究人员的关注和重视。针对传统室内定位方法在复杂室内环境下准确性及稳定性方面的不足，提出了一种可以用于复杂室内环境的定位方法，命名为 ComLoc。主要解决了复杂环境中无线信号多径效应和噪声干扰对定位精度的影响，并讨论了CSI信号存在的误差，分析CSI相位信息对室内环境的敏感性，提出可信载波链路的思想，通过相位差选取可靠、稳定的链路信号来减少对位置的误判，同时对CSI的相位误差进行校准，提取信号变化的特征。实验结果分析表明，ComLoc在室内复杂环境下的定位结果具有高效性和有效性。

Abstract

Channel state information can provide more detailed sub-carrier information

which attracts the attention of researchers in indoor localization technology.In view of the shortcomings of the traditional indoor location method in the accuracy and stability of the complex indoor environment

an indoor localization method named ComLoc was proposed which could be applied to complex indoor environment

solved the influence of the multipath effect and noise interference on the positioning precision.The error of CSI signal was discussed

the sensitivity of CSI phase information to indoor environment was analyzed and the idea of trusted carrier link was proposed.By selecting reliable and stable link signal by phase difference

the misjudgment of position could be reduced.Based on many numerous experiments

the phase error of CSI was calibrated

and the characteristics of signal variation were extracted.The experimental results show that ComLoc is effective and efficient in the complex indoor environment.

关键词

复杂室内环境室内定位信道状态信息相位误差校准特征指纹

Keywords

complex indoor environmentindoor localizationchannel state informationphase calibration

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