Open AccessIndoor infrared optical wireless localization system with background light power estimation capability
Author(s) -
Ke Wang,
Ampalavanapillai Nirmalathas,
Christina Lim,
Kamal Alameh,
Hongtao Li,
Efstratios Skafidas
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.022923
Subject(s) - optical wireless , wireless , computer science , optical wireless communications , optical power , light intensity , real time computing , optics , telecommunications , physics , laser
The indoor user localization function is in high demand for high-speed wireless communications, navigations and smart-home applications. The optical wireless technology has been used to localize end users in indoor environments. However, its accuracy is typically very limited, due to the ambient light, which is relatively strong. In this paper, a novel high-localization-accuracy optical wireless based indoor localization system, based on the use of the mechanism that estimates background light intensity, is proposed. Both theoretical studies and demonstration experiments are carried out. Experimental results show that the accuracy of the proposed optical wireless indoor localization system is independent on the localization light strength, and that an average localization error as small as 2.5 cm is attained, which is 80% better than the accuracy of previously reported optical wireless indoor localization systems.