Modeling of Multipath Channel and Performance Analysis of MIMO-DCO-OFDM System in Visible Light Communications
JIA Kejun1,2, HAO Li1
1. Key Laboratory of Information Coding and Transmission, Southwest Jiaotong University, Chengdu 610031, China; 2. School of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China
Modeling of Multipath Channel and Performance Analysis of MIMO-DCO-OFDM System in Visible Light Communications
JIA Kejun1,2, HAO Li1
1. Key Laboratory of Information Coding and Transmission, Southwest Jiaotong University, Chengdu 610031, China; 2. School of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China
摘要 When a big path difference exists between the multiple transmitter-receiver links, time dispersion is inevitable. A multipath channel model is proposed for Multiple-input multiple-output (MIMO) Visible light communications (VLC). To combat Intersymbol interference (ISI) as well as increase the channel capacity, a combination of MIMO and Direct-currentbiased Optical orthogonal frequency division multiplexing (DCO-OFDM) is studied. The performance analysis of MIMO-DCO-OFDM taking into account the limitation of the forward current of the off-the-shelf LED is derived. The accuracy of the theoretical results is verified by comparison with the Monte Carlo Bit error ratio (BER) simulation results under different DC bias and different clipping levels.
Abstract：When a big path difference exists between the multiple transmitter-receiver links, time dispersion is inevitable. A multipath channel model is proposed for Multiple-input multiple-output (MIMO) Visible light communications (VLC). To combat Intersymbol interference (ISI) as well as increase the channel capacity, a combination of MIMO and Direct-currentbiased Optical orthogonal frequency division multiplexing (DCO-OFDM) is studied. The performance analysis of MIMO-DCO-OFDM taking into account the limitation of the forward current of the off-the-shelf LED is derived. The accuracy of the theoretical results is verified by comparison with the Monte Carlo Bit error ratio (BER) simulation results under different DC bias and different clipping levels.
基金资助:This work is supported by the National Natural Science Foundation of China (No.61461026).
作者简介: JIA Kejun was born in Shanxi Province, China, in 1978. He received his M.S. degree in communication and information system from Xi'an University of Technology, Xi'an, China, in 2007. He received the Ph.D. degree at the key lab of information coding and transmission, southwest jiaotong university, Chengdu, China. Now he is with the School of Computer and Communication, Lanzhou University of Technology, China, where he is currently a associate professor. His research interests include visible light communication and MIMO-OFDM systems. (Email:kjjia@lut.cn)
引用本文:
JIA Kejun, HAO Li. Modeling of Multipath Channel and Performance Analysis of MIMO-DCO-OFDM System in Visible Light Communications[J]. 电子学报, 2019, 28(3): 630-639.
JIA Kejun, HAO Li. Modeling of Multipath Channel and Performance Analysis of MIMO-DCO-OFDM System in Visible Light Communications. Chinese Journal of Electronics, 2019, 28(3): 630-639.
[1] T. Komine, and M. Nakagawa "Fundamental analysis for visible-light communication system using LED lights", IEEE Transactions on Consumer Electronics, Vol.50, No.1, pp.100-107, 2004. [2] L. Zeng, D. O'brien, H. Minh,et al., "High data rate multiple input multiple output (MIMO) optical wireless communications using white LED lighting", IEEE Journal on Selected Areas in Communications, Vol.27, No.9, pp.1654-1662, 2009. [3] E. Zhou and L. Hao, "On the detection of multiple-access spatial modulations", Chinese Journal of Electronics, Vol.26, No.1, pp.172-178, 2017. [4] K. Jia and L. Hao, "The design and performance analysis of optical wireless ACO-MC-CDMA system in the presence of clipping noise", Science China Information Sciences, Vol.61, No.2, pp.029304:1-029304:3, 2018. [5] A. Nuwanpriya, S.-W. Ho and C. S. Chen, "Indoor MIMO visible light communications:Novel angle diversity receivers for mobile users", IEEE Journal on Selected Areas in Communications, Vol.33, No.9, pp.1780-1792, 2015. [6] T. Q. Wang, Y. A. Sekercioglu and J. Armstrong, "Analysis of an optical wireless receiver using a hemispherical lens with application in MIMO visible light communications", Journal of Lightwave Technology, Vol.31, No.11, pp.1744-1754, 2013. [7] T. Q. Wang, R. J. Green and J. Armstrong, "MIMO optical wireless communications using ACO-OFDM and a prism-array receiver", IEEE Journal on Selected Areas in Communications, Vol.33, No.9, pp.1959-1971, 2015. [8] Y. Hong, J. Chen, Z. Wang, et al., "Performance of a precoding MIMO system for decentralized multiuser indoor visible light communications", IEEE Photonics Journal, Vol.5, No.4, pp.7800211, 2013. [9] T. Fath and H. Haas, "Performance comparison of MIMO techniques for optical wireless communications in indoor environments", IEEE Transactions on Communications, Vol.61, No.2, pp.733-742, 2013. [10] J. R. Barry, J. M. Kahn, W. J. Krause, et al., "Simulation of multipath impulse response for indoor wireless optical channels", IEEE Journal on Selected Areas in Communications, Vol.11, No.3, pp.367-379, 1993. [11] R. Perez-Jimenez, J. Berges and M. J. Betancor, "Statistical model for the impulse response on infrared indoor diffuse channels", Electronics Letters, Vol.33, No.15, pp.1298-1300, 1997. [12] F. J. Lopez-Hermandez and M. J. Betancor, "DUSTIN:Algorithm for calculation of impulse response on IR wireless indoor channels", Electronics Letters, Vol.33, No.21, pp.1804-1806, 1997. [13] F. J. Lopez-Hernandez, R. Perez-Jimenez and A. Santamaria, "Monte Carlo calculation of impulse response on diffuse IR wireless indoor channels", Electronics Letters, Vol.34, No.12, pp.1260-1262, 1998. [14] J. B. Carruthers and J. M. Kahn, "Modeling of nondirected wireless infrared channels", IEEE Transactions on Communications, Vol.45, No.10, pp.1260-1268, 1997. [15] F. J. Lopez-Hernandez, R. Perez-Jiménez and A. Santamarís, "Ray-tracing algorithms for fast calculation of the channel impulse response on diffuse IR wireless indoor channels", Optical engineering, Vol.39, No.10, pp.2775-2780, 2000. [16] V. Jungnickel, V. Pohl, S. Nonnig, et al., "A physical model of the wireless infrared communication channel", IEEE Journal on Selected Areas in Communications, Vol.20, No.3,pp.631-640, 2002. [17] J. B. Carruthers and J. M. Kahn, "Multiple-subcarrier modulation for nondirected wireless infrared communication", IEEE Journal on Selected Areas in Communications, Vol.14, No.3, pp.538-546, 1996. [18] J. Armstrong and A. Lowery, "Power efficient optical OFDM", Electronics Letters, Vol.42, No.6, pp.370-372, 2006. [19] D. Tsonev, S. Sinanovic and H. Haas, "Novel unipolar orthogonal frequency division multiplexing (U-OFDM) for optical wireless", Proc. of IEEE 75th Vehicular Technology Conference (VTC Spring), Yokohama, Japan, pp.1-5, 2012. [20] A. H. Azhar, T. Tran and D. O'Brien, "A Gigabit/s indoor wireless transmission using MIMO-OFDM visiblelight communications", IEEE Photonics Technology Letters, Vol.25, No.2, pp.171-174, 2013. [21] O. Gonzalez, S. Rodriguez R. Perez-Jimenez, F. Delgado, et al., "Multi-user adaptive orthogonal frequency-division multiplexing system for indoor wireless optical communications", IET Optoelectronics, Vol.1, No.2, pp.68-76, 2007. [22] F. Yan, Y. Wang, Y. Shao, et al., "Experimental demonstration of sub-carrier multiplexing-based MIMO-OFDM system for visible light communication", 18th Asia-Pacific Conference on Communications (APCC), Jeju Island, South Korea, pp.924-926, 2012. [23] S. Dimitrov, S. Sinanovic and H. Haas, "Clipping noise in OFDM-based optical wireless communication systems",IEEE Transactions on Communications, Vol.60, No.4, pp.1072-1081, 2012. [24] J. ZHAO, X. GUAN, X. LI, et al., "Cross-layer in MIMOOFDM System with Adaptive Modulation and Coding:Design and Analysis", Chinese Journal of Electronics, Vol.23, No.2, pp.371-376, 2014. [25] C. Kyongkuk and Y. Dongweon, "On the general BER expression of one-and two-dimensional amplitude modulations", IEEE Transactions on Communications, Vol.50, No.7, pp.1074-1080, 2002.
2019, Vol. 28 
