Adaptive User Grouping and Power Allocation for Indoor VLC‑NOMA

Huanlin Liu; Wenjie Song; Yong Chen; Tong Zhang; Haonan Chen; Yuxin Xie; Di Deng

doi:10.3788/CJL231531

Chinese Journal of Lasers, Volume. 51, Issue 14, 1406003(2024)

Adaptive User Grouping and Power Allocation for Indoor VLC‑NOMA

Huanlin Liu^1、*, Wenjie Song¹, Yong Chen², Tong Zhang¹, Haonan Chen², Yuxin Xie¹, and Di Deng¹

¹School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

²Key Laboratory of Industrial Internet of Things & Network Control, Ministry of Education, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

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Figures & Tables(8)

Fig. 1. Relationship between the sum of MOS and UE in NOMA grouping

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Fig. 2. Relationship between the sum MOS and demand rate increment of UE in NOMA grouping

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Fig. 3. Relationship between the sum MOS and UE in power allocation

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Fig. 4. Relationship between the sum MOS and demand rate increment of UE in power allocation

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Fig. 5. Relationship between JFI and number of UE under different NOMA groups

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Fig. 6. Relationship between JFI and number of UE under different power allocation algorithms

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Table 1. Default simulation parameters of indoor VLC-NOMA network

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Table 1. Default simulation parameters of indoor VLC-NOMA network

Symbol	Meaning	Value	Symbol	Meaning	Value
H	Height of PD	0.85 m	γ	Photoelectric conversion coefficient	0.53 A/W
P_VLC	VLC AP emission power	10 W	M	Number of users	10
B_VLC	Bandwidth of VLC-NOMA	20 MHz	N₀	Noise power spectral density	10^-21A² /Hz
$θ_{1 / 2}$	Half power angle of LED	60°	$P_{t o l}$	Minimum power difference	10 dBm
ψ_C	Field of view	60°	$M_{M O S t h}$	Threshold of MOS	2
$T_{S} (ϕ_{m})$	Gain of optical concentrator	1	$Δ p_{1}$	Power adjustment value 1	0.0001
A	Receiving area of PD	1 cm²	$Δ p_{2}$	Power adjustment value 2	0.002

Table 2. Types of data
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Table 2. Types of data
Data Minimum demand rate Recommended rate
Type 1 1 2
Type 2 5 10
Type 3 10 20
Type 4 17.5 35

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Huanlin Liu, Wenjie Song, Yong Chen, Tong Zhang, Haonan Chen, Yuxin Xie, Di Deng. Adaptive User Grouping and Power Allocation for Indoor VLC‑NOMA[J]. Chinese Journal of Lasers, 2024, 51(14): 1406003

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