Abstract
Simultaneously improving the communication speed and equalizing the nonlinear frequency response are still challenging for tunnel visible light communication (TVLC) system. Here, we propose and numerically investigate a frequency domain pre-equalization scheme for discrete multitone (DMT) modulation TVLC system. The amplitude of each subscriber is appropriately pre-equalized by optimized nonlinear compensation parameters. Simulation results demonstrate that our proposed equalization technique can resist the channel attenuation of the signal high-frequency part and further flatten the nonlinear channel response. Without forward error correction technique, the bit error ratio (BER) performance can reach 7.66×10−6 in a 2.05 Gbit/s DMT-TVLC system.
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BRIEND O, MINHH L, ZENG L, et al. Indoor visible light communications: challenges and prospects[J]. SPIE, 2008, 7091: 709106–1-9.
COSSU G, WAJAHAT A, CORSINI R, et al. 5.6Gbit/s downlink and 1.5Gbit/s uplink optical wireless transmission at indoor distances (>1.5m)[C]//2014 The European Conference on Optical Communication (ECOC), September 21–25, 2014, Cannes, France. New York: IEEE, 2014: 14768268.
KHALIDA M, COSSU G, CORSINI R, et al. 1Gb/s transmission over a phosphorescent white LED by using rate-adaptive discrete multitone modulation[J]. IEEE photonics journal, 2012, 4: 1465–1473.
WANG Y, TAO L, HUANG X, et al. Enhanced performance of high-speed WDM CAP64 VLC system employing Volterra series-based nonlinear equalizer[J]. IEEE photonics journal, 2015, 7: 1–8.
GHASSEMLOOY Z, POPOOLA W, RAJBHANDARI S. Optical wireless communication system and channel modeling with Matlab[M]. Boca Raton: CRC Press, 2013: 81–83.
WANG Y, WANG Y, CHI N, et al. Demonstration of 575 Mb/s downlink and 225Mb/s uplink bi-directional SCM-WDM visible light communication using RGB LED and phosphor-based LED[J]. Optics express, 2013, 21: 1203–1208.
ZENG L, BRIEN D, LE-MINH H, et al. Improvement of date rate by using equalization in an indoor visible light communication system[C]//Proceedings of 2008 4th IEEE International Conference on Circuits & Systems for Communications, May 26–28, 2008, Shanghai, China. New York: IEEE, 2008: 678–682.
WANG D, LI C, WANG Y H, et al. Tunnel visible light communication system utilizing nonlinear suppression technique[J]. Optik, 2021, 228: 166195.
ZHOU Z, LIU L, WANG G. 2.03 Gbps visible light communication system with 64-QAM-OFDM utilizing a single flip-chip blue GaN-LED[J]. Journal of modern optics, 2019, 66: 2114–2118.
CHOU H H, LIAW S K, JIANG J S, et al. Experimental study of red-, green-, and blue-based light emitting diodes visible light communications for micro-projector application[J]. Fiber and integrated optics, 2016, 35: 98–113.
HSU C, CHEN G, WEI L. Adaptive filtering for white-light LED visible light communication[J]. Optical engineering, 2017, 56: 016115–1–5.
CHOW C, YEH C, LIU Y. Improved modulation speed of LED visible light communication system integrated to main electricity network[J]. Electronics letters, 2011, 47: 867–1–2.
YEH C, CHEN H, CHOW C, et al. Utilization of multi-band OFDM modulation to increase traffic rate of phosphor-LED wireless VLC[J]. Optics express, 2015, 23: 1133–11138.
RANGEET M, SANDESH J, VIMAL B. Least minimum symbol error rate based post-distortion for VLC using random Fourier features[J]. IEEE communications letters, 2020, 24: 830–834.
MITRA R, JAIN S, BHATIA V. Kernel MSER-DFE based post-distorter for VLC using random Fourier features[J]. IEEE transactions on vehicular technology, 2020, 69(12): 16241–16246.
MITRA R, JAIN S, BHATIA V. On BER analysis of nonlinear VLC systems under ambient light and imperfect/outdated CSI[J]. OSA continuum, 2020, 3: 3125–3140.
WANG J L, CHEN N, ZHANG S R, et al. Sparse kernel affine projection-based nonlinear distortion compensation and memory effect depression algorithm in VLC systems[J]. Photonics journal IEEE, 2022, 14: 1–6.
FARSHAD M, MEHDI K, ENGIN Z, et al. Enabling 5G indoor services for residential environment using VLC technology[J]. Physical communication, 2022, 53: 101679.
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The authors declare that there are no conflicts of interest related to this article.
This work has been supported by the National Natural Science Foundation of China (No.61905091), and the PhD Foundation of University of Jinan (No.XBS1901).
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Wang, D., Li, C. & Che, Y. Tunnel visible light communication system utilizing frequency domain pre-equalization technique. Optoelectron. Lett. 18, 484–488 (2022). https://doi.org/10.1007/s11801-022-2006-9
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DOI: https://doi.org/10.1007/s11801-022-2006-9