Error Performance Analysis of Serial-relayed Underwater Wireless Optical Communication Systems over Generalized Gamma Distribution Weak Turbulence Environment with Pointing Error

Yixu WANG; Yueheng LI; Ping HUANG; Meiyan JU

doi:10.3788/gzxb20245302.0206002

Journals >Acta Photonica Sinica >Volume 53 >Issue 2 >Page 0206002 > Article

Acta Photonica Sinica
Vol. 53, Issue 2, 0206002 (2024)

Error Performance Analysis of Serial-relayed Underwater Wireless Optical Communication Systems over Generalized Gamma Distribution Weak Turbulence Environment with Pointing Error

Yixu WANG, Yueheng LI^*, Ping HUANG, and Meiyan JU

Author Affiliations

School of Computer and Information，Hohai University，Nanjing 211100，China

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DOI: 10.3788/gzxb20245302.0206002 Cite this Article

Yixu WANG, Yueheng LI, Ping HUANG, Meiyan JU. Error Performance Analysis of Serial-relayed Underwater Wireless Optical Communication Systems over Generalized Gamma Distribution Weak Turbulence Environment with Pointing Error[J]. Acta Photonica Sinica, 2024, 53(2): 0206002 Copy Citation Text

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Fig. 1. Schematic diagram of serial-relayed UWOC systems

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Fig. 2. FFIRs of laser-based collimated and diffusive UWOC links in coastal waters

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Fig. 3. The theoretical and simulated BER values of the serial-relayed UWOC systems varying with the average transmission power per bit under different node numbers（

σ_{s} = 10 c m, R_{b} = 2 G b p s, r = 10 c m, σ_{I}^{2} = 0.107 4

）

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Fig. 4. The theoretical and simulated BER values of the serial-relayed UWOC systems varying with the average transmission power per bit under different node numbers（

σ_{s} = 20 c m, R_{b} = 2 G b p s, r = 10 c m, σ_{I}^{2} = 0.107 4

）

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Fig. 5. The theoretical and simulated BER values of the serial-relayed UWOC systems varying with the average transmission power per bit under different node numbers（

σ_{s} = 2 c m, R_{b} = 2 G b p s, s = 5 c m, σ_{I}^{2} = 0.3

）

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Fig. 6. The theoretical and simulated BER values of the serial-relayed UWOC systems varying with the average transmission power per bit under different node numbers（

σ_{s} = 7 c m, R_{b} = 2 G b p s, s = 5 c m, σ_{I}^{2} = 0.3

）

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Fig. 7. The theoretical and simulated BER values of the serial-relayed UWOC systems varying with the average transmission power per bit under different node numbers（

σ_{s} = 7 c m, R_{b} = 2 G b p s, s = 10 c m, σ_{I}^{2} = 0.3

）

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Coefficient	Symbol	Value
Transmission rate	$R_{b}$	$2 G b p s$
Half divergence angle for laser beam	$θ_{l a s e r}^{d i v}$	$0.01 ° / 3 °$
Source wavelength	$λ$	$532 n m$
Asymmetric factor of HG model	$g$	$0.924$
Receiver half angle	$θ_{F O V}$	$40 °$
Laser beam waist radius	$W_{r}$	$3 m m$
Total number of transmitted photons	$N_{t}$	$10^{9}$
Aperture diameter	$D_{0}$	$20 c m$
Photon weight survival threshold	$W_{t h}$	$10^{- 4}$
Quantum efficiency	$η$	$0.8$
Electron charge	$q$	$1.6 \times 10^{- 19}$
Planck constant	$h$	$6.626 \times 10^{- 34}$
Underwater speed of light	$c_{0}$	$2.26 \times 10^{8}$
Boltzmann constant	$K$	$1.38 \times 10^{- 23} J / K$
Equivalent temperature	$T$	$290 K$
Filter bandwidth	$B$	10 GHz
Load resistance	$R_{L}$	$100 Ω$
Transmission distance	$Z$	$11.25 / 15 / 22.5 / 45 m$
Scintillation index	$σ_{I}^{2}$	$0.1074 / 0.3$
GGD model shape parameters	$c$	$3$
Absorption and scattering coefficients （coastal waters）	$(a^{'}, b^{'})$	$(0.179,0.219) m^{- 1}$

Table 1. Main parameters for numerical simulation of FFIR and system BER^{［14，26-27］}

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