Open AccessTurbo Positioning Using Link Reliability in Wireless Networks
Author(s) -
Yun Kyungsu,
Park Ji Kyu,
Ahn Jae Young,
Kwon Jae Kyun
Publication year - 2018
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.2017-0080
Subject(s) - non line of sight propagation , reliability (semiconductor) , computer science , link (geometry) , weighting , wireless , residual , real time computing , reliability engineering , computer network , engineering , algorithm , telecommunications , power (physics) , physics , quantum mechanics , medicine , radiology
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.