Indoor Visible Light Communication Security Systems Based on Cooperative Jamming

Ziwen Wan; Yating Wu; Rubin Liang; Qianwu Zhang

doi:10.3788/AOS221530

Acta Optica Sinica, Volume. 43, Issue 4, 0406002(2023)

Indoor Visible Light Communication Security Systems Based on Cooperative Jamming

Ziwen Wan, Yating Wu^*, Rubin Liang, and Qianwu Zhang

Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China

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Figures & Tables(8)

Fig. 1. Indoor multi-user MISO VLC security system model

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Fig. 2. Proposed VLC security scheme based on cooperative jamming

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Fig. 3. Iterative steps of CCP algorithm

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Fig. 4. Locations of LEDs and users in room

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Fig. 5. SINR of eavesdroppers in different schemes at k=1 and k=2. (a) SINR of eavesdroppers at $k = 1$ ; (b) SINR of eavesdroppers at $k = 2$

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Fig. 6. System secrecy sum-rate in different schemes. (a) AN-based precoding; (b) spatial jamming; (c) proposed scheme

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Table 1. System parameters

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Table 1. System parameters

Parameter	Value
Half power angle of LED $θ_{1 / 2}$ /（°）	60
Dynamic range of LED $[I_{m i n}, I_{m a x}]$ /A	$[1, 5]$
Conversion factor of LED $η$ /（W·A^-1）	0.4
Active area of PD $S_{P D}$ /cm²	1
Responsivity of PD $ζ$ /（A·W^-1）	0.54
Field of view at receiver $ψ_{F O V}$ /（°）	60
Gain of optical filter $T (ψ)$	1
Average noise power $σ_{N}^{2}$ /dBm	-95
Refractive index of lens $κ$	1.5
Variance of signal $σ_{U}^{2}$	1/3
Optical power coefficient $ρ$	0.5

Table 2. SINR of eavesdroppers in different schemes
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Table 2. SINR of eavesdroppers in different schemes
Scheme Average Maximum Minimum Standard deviation
AN based precoding in Ref.［12］ -16.46 -5.49 -22.33 4.04
Spatial jamming in Ref.［13］ -15.12 7.08 -27.93 9.30
Proposed -29.10 -17.22 -36.56 5.13

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Ziwen Wan, Yating Wu, Rubin Liang, Qianwu Zhang. Indoor Visible Light Communication Security Systems Based on Cooperative Jamming[J]. Acta Optica Sinica, 2023, 43(4): 0406002

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