Leverage LiFi in Smart Manufacturing

Müller, Marcel; Behnke, Daniel; Bök, Patrick-Benjamin; Kottke, Christoph; Bober, Kai Lennert; Jungnickel, Volker

doi:10.1109/gcwkshps50303.2020.9367446

Cited by 15 publications

(16 citation statements)

References 11 publications

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“…The AP sends an initial packet (ping) at the time of transmission t ot and Fig. 3: Scenario for radio based positioning with moving ITS between separate buildings indicating the problems of radiobased signaling and handover due to interference from other rooms, reflections at huge machines, walls and surrounding objects [15]. the MD receives it at a local clock called time of arrival t oa .…”

Section: A Rf-based Positioningmentioning

confidence: 99%

“…Due to the fading, non-LOS signals can be stronger than the LOS as shown in Fig. 3 [15]. Additionally, electromagnetic interference (EMI) around ITS stemming from other radio-based systems sharing the same frequency band make current WiFi-based positioning techniques not promising for smart manufacturing environments [15].…”

Section: A Rf-based Positioningmentioning

confidence: 99%

“…LiFi positioning device (on the ceiling) Fig. 7: Improved scenario using LiFi for integrating positioning with wireless communications solving problems from radio based scenario regarding interference and multi-path propagation and simplifying handovers for moving ITS [15].…”

Section: Its Itsmentioning

confidence: 99%

“…7. Challenges for LiFi-based positioning systems are the required coverage and energy efficiency in particular for mobile devices [15]. To enable localization in an industry environment, full coverage is required.…”

Section: Lifi-based Positioningmentioning

confidence: 99%

“…In Fig. 18 the total 3D error, using (15), is shown for three Rx positions over 40 measurements. There are two observations: First, there is a different offset error for each position, with Rx(1,0.72,0) the highest and Rx(0.67,0.725,0) the lowest.…”

Section: ) 2d and 3dmentioning

confidence: 99%

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LiFi Positioning for Industry 4.0

Kouhini

Kottke

et al. 2021

IEEE J. Select. Topics Quantum Electron.

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Precise position information is considered as the main enabler for the implementation of smart manufacturing systems in Industry 4.0. In this article, a time-of-flight based indoor positioning system for LiFi is presented based on the ITU -T recommendation G.9991. Our objective is to realize positioning by reusing already existing functions of the LiFi communication protocol which has been adopted by several vendors. Our positioning algorithm is based on a coarse timing measurement using the frame synchronization preamble, similar to the ranging, and a fine timing measurement using the channel estimation preamble. This approach works in various environments and it requires neither knowledge about the beam characteristics of transmitters and receivers nor the use of fingerprinting. The new algorithm is validated through both, simulations and experiments. Results in an 1m × 1m × 2m area indicate that G.9991-based positioning can reach an average distance error of a few centimeters in three dimension. Considering the common use of lighting in indoor environments and the availability of a mature optical wireless communication system using G.9991, the proposed LiFi positioning is a promising new feature that can be added to the existing protocols and enhance the capabilities of smart lighting systems further for the benefit of Industry 4.0.

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Section: A Rf-based Positioningmentioning

confidence: 99%

Section: A Rf-based Positioningmentioning

confidence: 99%

Section: Its Itsmentioning

confidence: 99%

Section: Lifi-based Positioningmentioning

confidence: 99%

Section: ) 2d and 3dmentioning

confidence: 99%

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