Turbo Positioning Using Link Reliability in Wireless Networks

In wireless positioning systems using range measurements non‐line‐of‐sight (NLOS) links cause estimation errors. Several studies have attempted to improve the positioning performance by mitigating these NLOS errors. These studies, however, have focused on the performance of a dataset consisting of t...

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Bibliographic Details
Published in:ETRI journal 2018, 40(1), , pp.101-110
Main Authors: Yun, Kyungsu, Park, Ji Kyu, Ahn, Jae Young, Kwon, Jae Kyun
Format: Article
Language:English
Subjects:
Link reliability
LOS detection
TOA
Turbo positioning
Wireless location
전자/정보통신공학
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Summary:In wireless positioning systems using range measurements non‐line‐of‐sight (NLOS) links cause estimation errors. Several studies have attempted to improve the positioning performance by mitigating these NLOS errors. These studies, however, have focused on the performance of a dataset consisting of three or more links. Therefore, measurement errors induced by links are averaged, and a reliable link is not fully utilized in the dataset. This paper proposes a Link Reliability based on Range Measurement (LRRM) scheme, which specifies the relative reliability of each link using residuals. The link reliability becomes the input to a Link Residual Weighting (LRW) scheme, which is also proposed as a weighted positioning scheme. Moreover, LRRM and LRW constitute new turbo positioning, where the estimation errors are reduced considerably by iterative updates.
ISSN:1225-6463
2233-7326
DOI:10.4218/etrij.2017-0080