Research on underwater optical communication technology based on RS coding and OFDM

Xiaole Zhang; Xiaochuan Tan; Zhe Li; Shaobo Li; Biyao Wang

doi:10.1117/12.2653444

18 November 2022 Research on underwater optical communication technology based on RS coding and OFDM

Xiaole Zhang, Xiaochuan Tan, Zhe Li, Shaobo Li, Biyao Wang

Proceedings Volume 12473, Second International Conference on Optics and Communication Technology (ICOCT 2022); 1247310 (2022) https://doi.org/10.1117/12.2653444
Event: Second International Conference on Optics and Communication Technology (ICOCT 2022), 2022, Hefei, China

Abstract

Underwater wireless optical communication can realize short-distance, high-speed communication. It effectively supplements the vacancy of optical cable communication, radio communication and underwater acoustic communication in underwater networking. Using Orthogonal Frequency Division Multiplexing (OFDM) technology in underwater wireless optical communication can effectively reduce the influence of multipath effects in the channel and improve system communication performance. The error correction ability of Reed-solomon (RS) code under medium code length is close to the theoretical value. This letter analyzes the underwater optical channel model, simulates the underwater optical communication system based on RS coding and OFMD, and studies the influence of communication distance and signal-to-noise ratio (SNR) on bit error rate (BER), as well as the error code distribution in the presence of Doppler shift and the impact of interleaving on system performance. The simulation results show that the BER of received signal increases with the increase of communication distance and the decrease of SNR; When Doppler shift exists, error codes appear in concentrated positions. Deep interleaving can effectively utilize the error correction ability of RS coding, reduce the influence of Doppler shift, and improve the communication quality of the system.

Citation Download Citation

Xiaole Zhang, Xiaochuan Tan, Zhe Li, Shaobo Li, and Biyao Wang "Research on underwater optical communication technology based on RS coding and OFDM", Proc. SPIE 12473, Second International Conference on Optics and Communication Technology (ICOCT 2022), 1247310 (18 November 2022); https://doi.org/10.1117/12.2653444

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KEYWORDS

Orthogonal frequency division multiplexing

Optical communications

Remote sensing

Doppler effect

Signal to noise ratio

Signal attenuation

Telecommunications

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