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Cooperative visible light positioning systems

Authors: Erdem, Osman;

Cooperative visible light positioning systems

Abstract

Işık saçan diyot (LED) kullanılarak yapılan görünür ışık konumlandırma sistemleri, yaygın olarak kullanılan radyo frekansı bazlı konumlandırma sistemlerine alternatif oluşturmaktadır. Literatürdeki görünür ışık konumlandırma çalışmaları, işbirlikçi olmayan sistemler üzerinde uygulanmaktadır. Bu tezde, görünür ışık sistemleri için alınan sinyal gücü ölçümlerine dayanan işbirlikçi konumlandırma sistemi önerilmektedir. Konumlandırma doğruluğu üzerine işbirliğinin etkisi, Cramer-Rao alt sınırı ifadesi kullanılarak gösterilmektedir. Türetilen ifade, herhangi bir üç boyutlu kurulum için geçerlidir ve bağlantı setleri tanımı vasıtasıyla olası bütün işbirliği senaryolarını kapsamaktadır. Buna ek olarak, işbirlikçi konumlandırma için düşük karmaşıklık içeren bir konumlandırma algoritması önerilmektedir. İşbirliğinin önemini ve önerilen algoritmanın çeşitli senaryolarda performansını değerlendirmek için sayısal örnekler sunulmaktadır.

Light emitting diode (LED) based visible light positioning (VLP) systems offer an alternative approach to commonly used radio frequency (RF) based positioning systems. In the literature, VLP studies are performed only for noncooperative systems. In this thesis, received signal strength (RSS) based cooperative localization is proposed for visible light systems. The effects of cooperation on the localization accuracy of visible light positioning systems are illustrated based on a Cramer-Rao lower bound expression. The obtained expression is generic for any three-dimensional configuration and covers all possible cooperation scenarios via definitions of connectivity sets. In addition, a low-complexity positioning algorithm is proposed for cooperative location estimation. Numerical results are presented to investigate the significance of cooperation and to evaluate performance of the proposed algorithm in various scenarios.

55

Country
Turkey
Related Organizations
Keywords

Positioning, visible light, Elektrik ve Elektronik Mühendisliği, Cooperative localization, Received signal strength, Estimation, Positioning, visible light, Electrical and Electronics Engineering

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green