An improved scheme of OFDM underwater visible wireless optical communication system

BAI Jurong; GUO Yucheng; WANG Yanben

doi:10.7510/jgjs.issn.1001-3806.2021.05.019

LASER TECHNOLOGY > 2021 > 45(5): 647-653. > DOI: 10.7510/jgjs.issn.1001-3806.2021.05.019

BAI Jurong, GUO Yucheng, WANG Yanben. An improved scheme of OFDM underwater visible wireless optical communication system[J]. LASER TECHNOLOGY, 2021, 45(5): 647-653. DOI: 10.7510/jgjs.issn.1001-3806.2021.05.019

Citation:

PDF (4439 KB)

An improved scheme of OFDM underwater visible wireless optical communication system

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

More Information

Received Date: October 14, 2020
Revised Date: November 30, 2020
Published Date: September 24, 2021

Graphical Abstract

Abstract

Abstract

In the underwater optical wireless communication-direct current bias-optical-orthogonal frequency division multiplexing (UOWC-DCO-OFDM) system, in order to ensure that the optical signal has a low peak-to-average power ratio (PAPR) at the transmitting end and can carry out long-distance low underwater, the method combining the tone reservation-least squares algorithm (TR-LSA) and companding transformation was adopted. At the same time, the optimized neural network was used to estimate the channel of the underwater environment. Based on this method, the channel equalizer was designed at the receiving end to deal with the strong attenuation of the optical signal in the underwater environment. The results show that the PAPR of the UOWC-DCO-OFDM system is reduced by 9dB, and the bit error rate is 10^-3 lower when the signal-to-noise ratio is 10dB, which is under the bit error rate standard of wireless optical communication. The system can realize long-distance underwater transmission of optical signals with low bit error rate.

FullText(HTML)

References (19)

References

[1]	ZENG Z, FU S, ZHANG H, et al. A survey of underwater optical wireless communications[J]. IEEE Communications Survey & Tutorials, 2017, 19(1): 204-238. http://smartsearch.nstl.gov.cn/paper_detail.html?id=c36728202f2edba803bee96545ff8b59
[2]	DJORDJEVIC I B, VASIC B. Orthogonal frequency division multiplexing for high-speed optical transmission[J]. Optics Express, 2006, 14(9): 3767-3775. DOI: 10.1364/OE.14.003767
[3]	BAI J R, LI Y, YANG Y, et al. PAPR reduction based on tone re-servation scheme for DCO-OFDM in door visible light communications[J]. Optics Express, 2017, 25(20): 24630-24638. DOI: 10.1364/OE.25.024630
[4]	BAI J R, DAI H, YANG Y, et al. A combinding PAPR reduction method for DCO-OFDM UOWC[EB/OL]. [2018-11-31]. https://ieeexplore.ieee.org/document/8596029.
[5]	KAREEM A N, SATAR S M A, HUSEIN M A. Performance improvement of OOFDM systems based on modified A-law companding technique[J]. Journal of Engineering and Applied ences, 2018, 13(13): 4022-4027. http://www.arpnjournals.org/jeas/research_papers/rp_2018/jeas_0718_7164.pdf
[6]	LIU Y, LI Y, SHENG M, et al. Reliability prediction method and application in distribution system based on genetic algorithm-back-propagation neural network[J]. IET Generation Transmission & Distribution, 2019, 13(7): 984-988. http://ieeexplore.ieee.org/document/8689374/
[7]	WANG F, YANG Y, DUAN Z L, et al. Characteristic analysis of underwater laser signal transmission channel based on visible light[J]. Optical Communication Technology, 2016, 40(3): 26-28(in Chin-ese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GTXS201603009.htm
[8]	ARMSTRONG J. OFDM for optical communications[J]. Journal of Lightwave Technology, 2009, 27(1): 189-204.
[9]	JIANG T, WU Y. An overview: Peak-to-average power ratio reduction techniques for OFDM signals[J]. IEEE Transactions on Broadcasting, 2008, 54(2): 257-268. DOI: 10.1109/TBC.2008.915770
[10]	WANG B, SI Q, JIN M. A novel tone reservation scheme based on deep learning for PAPR reduction in OFDM systems[J]. IEEE Communications Letters, 2020, 24(6): 1271-1274. DOI: 10.1109/LCOMM.2020.2980832
[11]	JAMALI M V, MIRANI A, PARSAY A, et al. Statistical studies of fading in underwater wireless optical channels in the presence of air bubble, temperature, and salinity random variations (long version)[J]. IEEE Transactions on Communications, 2018, 66(10): 4706-4723. http://ieeexplore.ieee.org/document/8370053
[12]	MORELLI M, MENGALI U. A comparison of pilot-aided channel estimation methods for OFDM systems[J]. IEEE Transactions on Signal Processing, 2002, 49(12): 3065-3073. http://www.researchgate.net/profile/Umberto_Mengali/publication/3318186_A_comparison_of_pilot-aided_channel_estimation_methods_for_OFDM_systems/links/00b4952adecd6030e7000000.pdf
[13]	BAGADI K P, DAS S. MIMO-OFDM channel estimation using pilot carries[J]. International Journal of Computer Applications, 2010, 2(3): 81-88. DOI: 10.5120/638-893
[14]	BASHEER I A, HAJMEER M N. Artificial neural networks: fundamentals, computing, design, and application[J]. Journal of Microbiological Methods, 2000, 43(1): 3-31. DOI: 10.1016/S0167-7012(00)00201-3
[15]	HAO Z, KEFA C, JIANBO M. combing neural network and genetic algorithms to optimize low NO_x pulverized coal combustion[J]. Fuel, 2001, 80(15): 2163-2169. DOI: 10.1016/S0016-2361(01)00104-1
[16]	SUPRAJA P, GAYATHRI V M, PITCHAI R. Optimized neural network for spectrum prediction using genetic algorithm in cognitive radio networks[J]. Cluster Computing, 2018, 22(1): 157-163.
[17]	DISSANAYAKE S D, ARMSTRONG J. Comparison of ACO-OFDM, DCO-OFDM and ADO-OFDM in IM/DD systems[J]. Journal of Lightwave Technology, 2013, 31(7): 1063-1072. DOI: 10.1109/JLT.2013.2241731
[18]	HE F T, WANG M, YANG Y. Analysis of spatial transmission characteristics of laser beam in seawater [J]. Laser & Infrared, 2018, 48(11): 28-33(in Chinese). http://en.cnki.com.cn/Article_en/CJFDTotal-JGHW201811006.htm
[19]	HUANG A P, ZHANG Y L, TAO L W. Monte Carlo simulation on channel characteristics of underwater laser communications [J]. Infrared and Laser Engineering, 2017, 46(4): 219-224(in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HWYJ201704034.htm

Cited By

Cited by

Periodical cited type(1)

胥晗，孙科学，徐荣青. 基于LSPR效应的金属-半导体-金属光电探测器性能的研究. 激光与光电子学进展. 2025(03): 87-93 .

Other cited types(0)

Get Citation

PDF

XML

Article views (5) PDF downloads (15) Cited by(1)

Turn off MathJax

Article Contents

Abstract

References

An improved scheme of OFDM underwater visible wireless optical communication system

Abstract

References

Cited by

Periodical cited type(1)

Other cited types(0)

Catalog

Links：

An improved scheme of OFDM underwater visible wireless optical communication system

Abstract

References

Cited by

Periodical cited type(1)

Other cited types(0)

Catalog

Links：

Export File

Citation

Format

Content