Research and Implementation of Indoor 3D Positioning Algorithm Based on LED Visible Light Communication and Corresponding Parameter Estimation

Table 3

Positioning system parameters.

Symbol	Significance	Numeric value
	Electronic charge	1.6 × 10^19 C
	Dark current	5 pA
	Channel noise factor	1.5
	Probe responsiveness	0.53 AAV
	Equivalent noise bandwidth	400 MHz
	Open-loop voltage gain	10
	Boltzmann's constant	1.38 × 10^−23
	Absolute temperature	300 K
	Detector effective area	1 dm^2
	Transducer	30 m/s
	The bandwidth of the optical filter	400 nm
	Background spectral irradiance	5.8 × 10^W/cm^2
	Fixed capacitance of photodetectors	112 pF/cm^2