Optimal design of integrated visible light communication and positioning system with energy harvesting

Zihuan Liang; Huimin Lu; Huimin Lu; Danyang Chen; Danyang Chen; Qingxuan Wang; Huimin Kong; Xinling Liu; Jianli Jin; Jianli Jin; Hongyao Chen; Jianping Wang

doi:10.1364/AO.497355

Applied Optics
Vol. 62,
Issue 30,
pp. 7985-7993
(2023)
•https://doi.org/10.1364/AO.497355

Optimal design of integrated visible light communication and positioning system with energy harvesting

Zihuan Liang, Huimin Lu, Danyang Chen, Qingxuan Wang, Huimin Kong, Xinling Liu, Jianli Jin, Hongyao Chen, and Jianping Wang

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Zihuan Liang, Huimin Lu, Danyang Chen, Qingxuan Wang, Huimin Kong, Xinling Liu, Jianli Jin, Hongyao Chen, and Jianping Wang, "Optimal design of integrated visible light communication and positioning system with energy harvesting," Appl. Opt. 62, 7985-7993 (2023)

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Table of Contents Category
- Fiber Optics, Fiber Sensors, and Optical Communications
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The topics in this list come from the Optics and Photonics Topics applied to this article.

About this Article
History
- Original Manuscript: June 8, 2023
- Revised Manuscript: August 2, 2023
- Manuscript Accepted: September 27, 2023
- Published: October 13, 2023

Abstract

In this paper, an optimization scheme that can simultaneously transmit communication information, positioning the information and energy in a visible light communication and positioning (VLCP) system with energy harvesting is proposed. The time switching-power splitting (TS-PS) method is applied, where the power and time allocation factors are defined as optimization variables, so that the system can maximize the harvested energy under the constraints of the information rate and positioning error. The multi-verse optimization (MVO) algorithm is introduced to obtain the optimal power and time allocation. In addition, the performance of the integrated system using the TS-PS method is investigated and compared with that using other conventional methods. The results show that a maximized harvested energy solution using the TS-PS method can harvest the most energy. Moreover, the effects of main external environment conditions, namely, the room height and field of view (FoV) of a photo diode (PD) on the system performance are also analyzed. The increase of the room height and FoV of the PD reduces the harvested energy, but does not change the information rate and positioning accuracy in the optimized system adopted in this paper.

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Data availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Parameter	Value	Parameter	Value
Electron charge (q)	$1.6 \times 10^{- 19} C$	Fill factor (f)	0.75
Dark current ( $I_{bg}$ )	5 pA	Detector effective area ( $A_{r}$ )	$1 {c m}^{2}$
Channel noise factor ( $T$ )	1.5	Thermal voltage ( $V_{t}$ )	25 mv
Transconductance ( $g_{m}$ )	30 ms	Refractive index ( $n_{p}$ )	1
Equivalent noise bandwidth ( $B_{w}$ )	450 MHz	Dark saturation current of PD ( $I_{0}$ )	$10^{- 9}$ A
Open-loop voltage gain (G)	10	Electrical power ( $P_{s}$ )	2 W
Absolute temperature ( $T_{k}$ )	300 K	Detector responsivity (R)	0.4 $A / W$
Bandwidth of optical fiber (λ)	400 nm	Maximum input bias current ( $I_{H}$ )	3 A
Background spectral irradiance (pBS)	$5.8 \times 10^{- 6} W / c m \cdot n m$	Minimum input bias current ( $I_{L}$ )	1 A
Bandwidth of the signal ( $B_{n}$ )	10 MHz	LED power per unit ( $P_{L E D}$ )	$10 W / A$

Parameter	Value	Parameter	Value
Electron charge (q)	$1.6 \times 10^{- 19} C$	Fill factor (f)	0.75
Dark current ( $I_{bg}$ )	5 pA	Detector effective area ( $A_{r}$ )	$1 {c m}^{2}$
Channel noise factor ( $T$ )	1.5	Thermal voltage ( $V_{t}$ )	25 mv
Transconductance ( $g_{m}$ )	30 ms	Refractive index ( $n_{p}$ )	1
Equivalent noise bandwidth ( $B_{w}$ )	450 MHz	Dark saturation current of PD ( $I_{0}$ )	$10^{- 9}$ A
Open-loop voltage gain (G)	10	Electrical power ( $P_{s}$ )	2 W
Absolute temperature ( $T_{k}$ )	300 K	Detector responsivity (R)	0.4 $A / W$
Bandwidth of optical fiber (λ)	400 nm	Maximum input bias current ( $I_{H}$ )	3 A
Background spectral irradiance (pBS)	$5.8 \times 10^{- 6} W / c m \cdot n m$	Minimum input bias current ( $I_{L}$ )	1 A
Bandwidth of the signal ( $B_{n}$ )	10 MHz	LED power per unit ( $P_{L E D}$ )	$10 W / A$

Abstract

Data availability

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Figures (6)

Tables (2)

Equations (19)

Applied Optics