Indoor visible light communication localization system utilizing received signal strength indication technique and trilateration method

Mousa, Farag; Almaadeed, Noor; Busawon, Krishna; Bouridane, Ahmed; Binns, Richard; Elliott, Ian

doi:10.1117/1.oe.57.1.016107

Cited by 15 publications

(12 citation statements)

References 24 publications

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“…where m is the Lambertian emission order of planar LEDs, and depends on semi-angle at half power [19]. A is the effective area of the PD, di is the distance in meters between the i th VAP and the PD, and FOV is the field of view of the PD.…”

Section: Optical Received Powermentioning

confidence: 99%

“…In another study [18], a hybrid algorithm is used to select four strongest LED signals with multipath reflections for approximate coordinate estimation then, weighted centroid algorithm is introduced to detect position. In the work [19], the performance of RSSIbased VLP system with NLOS components is evaluated using the received optical power levels from LEDs under the condition of both noisy and noiseless channel. The accuracy of 10 cm on average is achieved at an SNR value of greater than 12 dB.…”

Section: Introductionmentioning

confidence: 99%

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LED Dağılımının RSSI Tabanlı Görünür Işık Konum Belirleme Sistemleri Üzerindeki Etkisi

Celik¹

2019

European Journal of Science and Technology

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In this paper, the effect of light emitting diode (LED) deployment is investigated based on the received signal strength indication (RSSI) technique for visible light positioning (VLP) systems. The optical code division multiple access (OCDMA) is used as a multiplexing technique to transmit the location and RSSI information of LEDs simultaneously. For different highly reflective indoor scenarios, LEDs are placed on the ceiling of a room considering homogeneous illumination. The illuminance of the room is provided particularly with 400 lux minimally at the desk height. In order to demonstrate the uniformity of lighting for different indoor scenarios, the uniformity illuminance ratio (UIR) values are also obtained in this study. In addition, electrical signal-to-noise ratio (SNR), an important parameter for reliable communication, is calculated at desk height for each scenario considered and an SNR level of 45 dB is obtained at a minimum. The simulation results demonstrate that the mean square error (MSE) of the estimated location is reduced with an increase in the number of visible access points (VAPs). The MSE of the distance for number of VAPs 12 and 16 are the best, however, the scenario with 16 VAPs is preferable with a better uniformity illuminance ratio (UIR) parameter. In terms of illuminance, all the cases have the average illuminance value more than 450 lux.

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Section: Optical Received Powermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

LED Dağılımının RSSI Tabanlı Görünür Işık Konum Belirleme Sistemleri Üzerindeki Etkisi

Celik¹

2019

European Journal of Science and Technology

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“…Recent research works have addressed the impact of (i) LED power uncertainty [13]; (ii) reflections from walls and objects within the transmission paths [14]; and (iii) noise on the positioning performance [15]. The multipath channel has a direct influence on the model for the estimation of the received signal power, which has been addressed previously using machine learning algorithms [16].…”

Section: Introductionmentioning

confidence: 99%

Impact of Transmitter Positioning and Orientation Uncertainty on RSS-Based Visible Light Positioning Accuracy

Chaudhary

Alves

Ghassemlooy

2021

Sensors

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This paper present simulation-based results on the impact of transmitter (Tx) position and orientation uncertainty on the accuracy of the visible light positioning (VLP) system based on the received signal strength (RSS). There are several constraining factors for RSS-based algorithms, particularly due to multipath channel characteristics and set-up uncertainties. The impact of Tx uncertainties on positioning error performance is studied, assuming a statistical modelling of the uncertainties. Simulation results show that the Tx uncertainties have a severe impact on the positioning error, which can be leveraged through the usage of more transmitters. Concerning a smaller Tx’s position uncertainty of 5 cm, the average positioning errors are 23.3, 15.1, and 13.2 cm with the standard deviation values of 6.4, 4.1, and 2.7 cm for 4-, 9-, and 16-Tx cases, respectively. While for a smaller Tx’ orientation uncertainty of 5°, the average positioning errors are 31.9, 20.6, and 17 cm with standard deviation values of 9.2, 6.3, and 3.9 cm for 4-, 9-, and 16-Tx cases, respectively.

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“…When using Received Signal Strength Indicator (RSSI)-based positioning [3], VLP has an advantage over well-known Radio-Frequency (RF) solutions, thanks to the absence of small-scale fading effects. Research has shed light on the impact of noise on positioning performance [4], the impact of reflections [5,6], or the impact of LED power uncertainty [7]. Also the impact of receiver tilt has been characterized [8][9][10][11], and ways to compensate for this, but it remains unclear to what extent random small tilts of the LED at the ceiling impact positioning performance.…”

Section: Introduction On Visible Light Positioningmentioning

confidence: 99%

An Analysis of the Impact of LED Tilt on Visible Light Positioning Accuracy

et al. 2019

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Whereas the impact of photodiode noise and reflections is heavily studied in Visible Light Positioning (VLP), an often underestimated deterioration of VLP accuracy is caused by tilt of the Light Emitting Diodes (LEDs). Small LED tilts may be hard to avoid and can have a significant impact on the claimed centimeter-accuracy of VLP systems. This paper presents a Monte-Carlo-based simulation study of the impact of LED tilt on the accuracy of Received Signal Strength (RSS)-based VLP for different localization approaches. Results show that trilateration performs worse than (normalized) Least Squares algorithms, but mainly outside the LED square. Moreover, depending on inter-LED distance and LED height, median tilt-induced errors are in the range between 1 and 6 cm for small LED tilts, with errors scaling linearly with the LED tilt severity. Two methods are proposed to estimate and correct for LED tilts and their performance is compared.

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Indoor visible light communication localization system utilizing received signal strength indication technique and trilateration method

Abstract: Indoor visible light communication localization system utilizing received signal strength indication technique and trilateration method. Optical Engineering, 57 (1). 016107.

Cited by 15 publications

References 24 publications

LED Dağılımının RSSI Tabanlı Görünür Işık Konum Belirleme Sistemleri Üzerindeki Etkisi

LED Dağılımının RSSI Tabanlı Görünür Işık Konum Belirleme Sistemleri Üzerindeki Etkisi

Impact of Transmitter Positioning and Orientation Uncertainty on RSS-Based Visible Light Positioning Accuracy

An Analysis of the Impact of LED Tilt on Visible Light Positioning Accuracy

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