Cramer-Rao bound for indoor visible light positioning using an aperture-based angular-diversity receiver

2016 ◽  
Author(s):  
Heidi Steendam ◽  
Thomas Q. Wang ◽  
Jean Armstrong
Keyword(s):  
Visible Light ◽  
Angular Diversity ◽  
Cramer Rao Bound ◽  
Diversity Receiver

scholarly journals Indoor Visible Light Positioning: Overcoming the Practical Limitations of the Quadrant Angular Diversity Aperture Receiver (QADA) by Using the Two-Stage QADA-Plus Receiver

Sensors ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 956 ◽  
Author(s):  
Stefanie Cincotta ◽  
Cuiwei He ◽  
Adrian Neild ◽  
Jean Armstrong
Keyword(s):  
Visible Light ◽  
Estimation Accuracy ◽  
Receiver Design ◽  
Angle Of Arrival ◽  
Two Stage ◽  
Positioning Accuracy ◽  
Angular Diversity ◽  
Promising Solution ◽  
Imaging Sensors ◽  
The Impact

Visible light positioning (VLP), using LED luminaires as beacons, is a promising solution to the growing demand for accurate indoor positioning. In this paper, we introduce a two-stage receiver that has been specifically designed for VLP. This receiver exploits the advantages of two different VLP receiver types: photodiodes and imaging sensors. In this new receiver design a quadrant angular diversity aperture (QADA) receiver is combined with an off-the-shelf camera to form a robust new receiver called QADA-plus. Results are presented for QADA that show the impact of noise and luminaire geometry on angle of arrival estimation accuracy and positioning accuracy. Detailed discussions highlight other potential sources of error for the QADA receiver and explain how the two-stage QADA-plus can overcome these issues.

scholarly journals Interference Mitigation Using Angular Diversity Receiver With Efficient Channel Estimation in MIMO VLC

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 54060-54073 ◽  
Author(s):  
Mona Hosney ◽  
Hossam A. I. Selmy ◽  
Anand Srivastava ◽  
Khaled M. F. Elsayed
Keyword(s):  
Channel Estimation ◽  
Interference Mitigation ◽  
Angular Diversity ◽  
Diversity Receiver

scholarly journals Communication Aspects of Visible Light Positioning (VLP) Systems Using a Quadrature Angular Diversity Aperture (QADA) Receiver

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1977 ◽  
Author(s):  
Mohammed M. A. Mohammed ◽  
Cuiwei He ◽  
Stefanie Cincotta ◽  
Adrian Neild ◽  
Jean Armstrong
Keyword(s):  
Visible Light ◽  
Indoor Localization ◽  
Signal To Noise Ratio ◽  
Light Emitting Diode ◽  
Data Communication ◽  
Error Rates ◽  
Limiting Factor ◽  
Angle Of Arrival ◽  
Angular Diversity ◽  
The Impact

Visible light positioning (VLP) is a promising indoor localization system in which light emitting diode (LED) luminaires are used as positioning beacons. Data communication is an essential aspect of any VLP system, as each luminaire must transmit information about its own location to the receiver. The quadrature angular diversity aperture (QADA) is a new receiver designed specifically for VLP systems using angle-of-arrival estimation. Previous QADA research has focused only on positioning and assumed error-free communication. In this paper, we investigate, via simulations and experiment, the actual communication characteristics of a VLP system that uses a QADA receiver. We calculate the signal-to-noise ratio and bit-error-rates for a range of scenarios and demonstrate the impact of the dimensions of the receiver. We show that reliable communication is assured in typical operating scenarios, proving that communication will not be a limiting factor when using QADA in VLP systems.

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