RF Fingerprints Prediction for Cellular Network Positioning: A Subspace Identification Approach
RF Fingerprints Prediction for Cellular Network Positioning: A Subspace Identification Approach
复制标题
蜂窝网络定位的射频指纹预测:一种子空间识别方法
DOI:
10.1109/tmc.2019.2893278
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发表时间:
2020-02
影响因子:
7.9
通讯作者:
Xinbing Wang
中科院分区:
文献类型:
--
作者:
Xiaohua Tian;Xinyu Wu;Hao Li;Xinbing Wang
Cellular network positioning is a mandatory requirement for localizing emergency callers, such as E911 in North America. Although smartphones are normally equipped with GPS modules, there are still a large number of users with cell phones only as basic devices, and GPS could be ineffective in urban canyon environments. To this end, the RF fingerprints based positioning mechanism is incorporated into LTE architecture by 3GPP, where the major challenge is to collect geo-tagged RF fingerprints in vast areas. This paper proposes to utilize the subspace identification approach for large-scale RF fingerprints prediction. We formulate the problem into the problem of finding the optimal subspace over Stiefel manifold, and redesign the Stiefel-manifold optimization method with fast convergence rate. Moreover, we propose a sliding window mechanism for the practical large-scale fingerprints prediction scenario, where recorded fingerprints are unevenly distributed in the vast area. Combining the two proposed mechanisms enables an efficient method of large-scale fingerprints prediction in the city level. Further, we validate our theoretical analysis and proposed mechanisms by conducting experiments with real mobile data, which shows that the resulted localization accuracy and reliability with our predicted fingerprints exceed the requirement of E911.
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DOI:
10.1109/infocom.2017.8057097
发表时间:
2017-05
期刊:
IEEE INFOCOM 2017 - IEEE Conference on Computer Communications
影响因子:
--
作者:
R. Margolies;R. A. Becker;S. Byers;S. Deb;R. Jana;Simon Urbanek;C. Volinsky
通讯作者:
R. Margolies;R. A. Becker;S. Byers;S. Deb;R. Jana;Simon Urbanek;C. Volinsky
影响因子:
6
作者:
Gu, Zhuan;Chen, Zeqin;Chen, Ai
通讯作者:
Chen, Ai
影响因子:
2
作者:
Sylvain Firer-Blaess;C. Fuchs
通讯作者:
Sylvain Firer-Blaess;C. Fuchs
DOI:
--
发表时间:
2015-06
期刊:
ArXiv
影响因子:
--
作者:
Dejiao Zhang;L. Balzano
通讯作者:
Dejiao Zhang;L. Balzano
DOI:
--
发表时间:
2013
期刊:
--
影响因子:
--
作者:
J. .. S. C. H. T. z;Rohde Schwarz;KG GmbHCo.;Mühldorfstraße;München
通讯作者:
J. .. S. C. H. T. z;Rohde Schwarz;KG GmbHCo.;Mühldorfstraße;München