Affiliation:
1. School of Electronics and Electrical Engineering, Wuhan Textile University, Wuhan 430200, China
2. School of Electronic Information, Wuhan University, Wuhan 430072, China
Abstract
The performance of Low-Density Parity-Check (LDPC)-coded Orthogonal Frequency Division Multiplexing (OFDM) is investigated over turbulence channels in underwater wireless optical communications (UWOC). The relation between the bit error ratio (BER) and parameters such as the scintillation coefficient, signal-to-noise ratio (SNR), length of LDPC code, and order of OFDM is quantified by simulation. Results show that while the OFDM with subcarrier quadrature amplitude modulation (QAM-OFDM) has slightly better anti-turbulence performance than the OFDM with subcarrier phase shift keying modulation (PSK-OFDM), the LDPC-coded QAM-OFDM has a much better performance than the QAM-OFDM and the LDPC-coded PSK-OFDM, and, at SNR = 12, it decreases the BER by four orders of magnitude compared to the 16QAM-OFDM system when the scintillation coefficient σξ2 = 0.05.
Funder
National Natural Science Foundation of China
Subject
Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics
Reference7 articles.
1. Underwater Optical Wireless Communication;Kaushal;IEEE Access,2016
2. Optical MIMO-OFDM With Fully Generalized Index-Spatial LED Modulation;Hussein;IEEE Commun. Lett.,2019
3. Jiang, H., Qiu, H., and He, N. (2020). LDPC-Coded CAP with Spatial Diversity for UVLC Systems over Generalized-Gamma Fading Channel. Sensors, 20.
4. Underwater turbulence, its effects on optical wireless communication and imaging: A review;Baykal;Opt. Laser Technol.,2022
5. On the capacity of M-distributed atmospheric optical channels;Paris;Opt. Lett.,2013
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献