Real-time FPGA-based half-duplex underwater wireless optical communication system with high-loss link

Haipeng Wang; Xiaying Wu; Han Peng; Guangbin Song; Zihao Du; Jing Xu

doi:10.1117/12.3018835

30 April 2024 Real-time FPGA-based half-duplex underwater wireless optical communication system with high-loss link

Haipeng Wang, Xiaying Wu, Han Peng, Guangbin Song, Zihao Du, Jing Xu

Proceedings Volume 13155, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems; 1315510 (2024) https://doi.org/10.1117/12.3018835
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

Underwater wireless optical communication (UWOC) is a promising technology because of its high transmission rate, low latency, and small volume advantages. Therefore, it has drawn a lot of attention for real-time underwater wireless communication (UWC), especially for large-capacity transmission under short and medium distances. In this paper, we designed a real-time UWOC system with blue/green light sources and high-sensitive multi-pixel photon counters (MPPC), which can achieve an 8-Mbps half-duplex UWOC link in a standard 50-m swimming pool. Specifically, orthogonal frequency division multiplexing (OFDM) modulation was deployed and realized using a field programmable gate array (FPGA) to complete real-time signal processing. Moreover, we have also analyzed the transmission stability under misalignment of the optical axis. Under an inclination no more than 2° for the blue-light receiver or an inclination no more than 7° for the green-light receiver, the 8-Mbps communication link was always steady, and the measured bit error ratios (BER) were both below 1×10^-4. The results reveal that the proposed scheme can be beneficial to the real deployment of UWOC.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haipeng Wang, Xiaying Wu, Han Peng, Guangbin Song, Zihao Du, and Jing Xu "Real-time FPGA-based half-duplex underwater wireless optical communication system with high-loss link", Proc. SPIE 13155, Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems, 1315510 (30 April 2024); https://doi.org/10.1117/12.3018835

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