Paper Info
Title
Surface Correlation-Based Fingerprinting Method Using LTE Signal for Localization in Urban Canyon.
Abstract
The Global Satellite Navigation System (GNSS) used in various location-based services is accurate and stable in outdoor environments. However, it cannot be utilized in an indoor environment because of low signal availability and degradation of accuracy due to the multipath distortion of satellite signals in urban areas. On the contrary, LTE signals are available almost everywhere in urban areas and are quite stable without much variation throughout the year. This is because of the fixed location of base stations and the well-maintained policy of mobile communication service providers. Its varied stability and reliability make LTE signals a more viable method for localization. However, there are some complexities in utilizing LTE signals including signal interference distortion phenomena during propagation multipath fading, and various types of noise. In this paper, we propose a surface correlation-based fingerprinting method to utilize LTE signals for localization in urban areas. The surface correlation converts timely measured signal strength into spatial pattern using the walking distance from a Pedestrian Dead-Reckoning (PDR). The surface correlation is carried out by comparing the spatial signal strength pattern of a pedestrian's movement trajectory with a fingerprinting database to estimate the location. A reference trajectory of the moving pedestrian is chosen to have a greater correlation among the multiple trajectory candidates generated from a link-based fingerprinting database. By comparing spatial signal strength patterns, the proposed method can improve robustness in localization overcoming the accuracy degradation problem due to RF multipath and noise that are dominant in the conventional RSS measurement-based LTE localization scheme. The test results in urban areas demonstrate that the proposed surface correlation-based fingerprinting method has improved performance compared to the other conventional methods, thus proving to be a useful complementary method to the GNSS in urban areas.
Year
DOI
Venue
2019
10.3390/s19153325
SENSORS
Keywords
Field
DocType
localization,fingerprinting,LTE,correlation,pedestrian,PDR
Multipath propagation,Common spatial pattern,Base station,Robustness (computer science),Electronic engineering,Real-time computing,GNSS applications,Engineering,Distortion,Trajectory,Mobile telephony
Journal
Volume
Issue
Citations 
19
15
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Jung-Ho Lee1134.50
Beom-Ju Shin2303.94
Donghyun Shin300.34
Jinwoo Park420.74
Yong Sang Ryu500.34
Deok Ha Woo601.01
Taikjin Lee700.68