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2 results on '"Ji Kyu Park"'

1. Turbo Positioning Using Link Reliability in Wireless Networks

Author

Kyungsu Yun, Ji Kyu Park, Jae Young Ahn, and Jae Kyun Kwon

Subjects
Link reliability, LOS detection, TOA, Turbo positioning, Wireless location, Telecommunication, TK5101-6720, Electronics, TK7800-8360
Abstract

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.

Published
2018
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2. Turbo Positioning Using Link Reliability in Wireless Networks

Author

Jae Kyun Kwon, Ji Kyu Park, Jae Young Ahn, and Kyungsu Yun

Subjects
General Computer Science, biology, Wireless network, Computer science, Turbo, Wireless location, lcsh:Electronics, Turbo positioning, lcsh:TK7800-8360, 020206 networking & telecommunications, 020302 automobile design & engineering, 02 engineering and technology, biology.organism_classification, lcsh:Telecommunication, Electronic, Optical and Magnetic Materials, Reliability engineering, 0203 mechanical engineering, lcsh:TK5101-6720, 0202 electrical engineering, electronic engineering, information engineering, Link reliability, TOA, Electrical and Electronic Engineering, Link (knot theory), LOS detection, Reliability (statistics)
Abstract

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.

Published
2018

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