Anti error and erasure coding for water-to-air visible light communication through wavy water surface with wave height up to 0.6 meters

Considering large dynamic optical intensity range in a water-to-air (W2A) channel, we propose two promising channel coding schemes, namely the concatenated Reed Solomon-Low Density Parity Check (RS-LDPC) code and Raptor code, for W2A visible light communication (VLC). We establish a W2A-VLC link to...

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Veröffentlicht in:Optics express 2022-05, Vol.30 (11), p.18743-18761
Hauptverfasser: Fu, Chunfang, Lin, Tianrui, Gong, Chen, Huang, Nuo, Wei, Tianjian, Liu, Xinhui, Tang, Li, Su, Liang, Luo, Jianghua, Xu, Zhengyuan
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container_end_page 18761
container_issue 11
container_start_page 18743
container_title Optics express
container_volume 30
creator Fu, Chunfang
Lin, Tianrui
Gong, Chen
Huang, Nuo
Wei, Tianjian
Liu, Xinhui
Tang, Li
Su, Liang
Luo, Jianghua
Xu, Zhengyuan
description Considering large dynamic optical intensity range in a water-to-air (W2A) channel, we propose two promising channel coding schemes, namely the concatenated Reed Solomon-Low Density Parity Check (RS-LDPC) code and Raptor code, for W2A visible light communication (VLC). We establish a W2A-VLC link to verify the performance under different wavy water environments and different water depths with a green light emitting diode (LED). A wave generator is adopted to emulate the wavy water surface with wave height up to 0.6 m. The receiver is fixed 3.2 m above the water, and the transmitter varies from 2.5 m to 4.0 m under the water through a up-down-moveable platform. We test the coding schemes with different code lengths and code rates under 5 MSym/s air-interface symbol rate. Experimental results show that both schemes can reduce the bit error ratio (BER) and frame error rate (FER) of a W2A-VLC system, and thus can improve the reliability. Via comparing the two codes with the same overhead and approximately the same code length, it is demonstrated that Raptor code can generally outperform the concatenated RS-LDPC code. Our research provides promising channel coding methods without feedback for a W2A-VLC system.
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title Anti error and erasure coding for water-to-air visible light communication through wavy water surface with wave height up to 0.6 meters
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