Multivariate Regression Transform for Hybrid Optical OFDM in Visible Light Communications

In this paper, a multivariate regression transform (MRT) is proposed for pulse-amplitude-modulated-based hybrid optical orthogonal frequency division multiplexing (PHO-OFDM) visible light communications (VLC). PHO-OFDM is a hybrid modulation scheme that combines pulse amplitude modulated discrete multitone (PAM-DMT) and DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) for simultaneous transmission. The proposed method reduces the peak-to-average power ratio of PHO-OFDM to improve its system performance. Complementary cumulative distribution function simulation results show that the proposed method can effectively mitigate the PAPR of PHO-OFDM under different constellation combinations.

[1]  Junyi Li,et al.  Visible light communication: opportunities, challenges and the path to market , 2013, IEEE Communications Magazine.

[2]  Harald Haas,et al.  OFDM Visible Light Wireless Communication Based on White LEDs , 2007, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring.

[3]  Harald Haas,et al.  A study of LED nonlinearity effects on optical wireless transmission using OFDM , 2009, 2009 IFIP International Conference on Wireless and Optical Communications Networks.

[4]  Zabih Ghassemlooy,et al.  Emerging Optical Wireless Communications-Advances and Challenges , 2015, IEEE Journal on Selected Areas in Communications.

[5]  Darwish A. E. Mohamed,et al.  Linear Companding Transform for the Reduction of Peak-to-Average Power Ratio of OFDM Signals , 2009, IEEE Transactions on Broadcasting.

[6]  Tian Zhang,et al.  Design of PAM-DMT-Based Hybrid Optical OFDM for Visible Light Communications , 2019, IEEE Wireless Communications Letters.

[7]  Harald Haas,et al.  What is LiFi? , 2015, 2015 European Conference on Optical Communication (ECOC).

[8]  Lie-Liang Yang,et al.  Piecewise Companding Transform Assisted Optical-OFDM Systems for Indoor Visible Light Communications , 2017, IEEE Access.

[9]  Harald Haas,et al.  Visible light communication using OFDM , 2006, 2nd International Conference on Testbeds and Research Infrastructures for the Development of Networks and Communities, 2006. TRIDENTCOM 2006..

[10]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[11]  Andrew J Palmer,et al.  A multivariate logistic regression equation to screen for diabetes: response to Tabaei and Herman. , 2003, Diabetes care.

[12]  G. Maury,et al.  Hermitian symmetry free optical-single-carrier frequency division multiple access for visible light communication , 2018 .

[13]  Jean Armstrong,et al.  Comparison of Asymmetrically Clipped Optical OFDM and DC-Biased Optical OFDM in AWGN , 2008, IEEE Communications Letters.

[14]  Insoo Sohn,et al.  New SLM scheme to reduce the PAPR of OFDM signals using a genetic algorithm , 2016, ICT Express.

[15]  Volker Jungnickel,et al.  High-speed visible light communication systems , 2013, IEEE Communications Magazine.

[16]  Yeheskel Bar-Ness,et al.  A novel power-efficient scheme asymmetrically and symmetrically clipping optical (ASCO)-OFDM for IM/DD optical systems , 2015, EURASIP J. Adv. Signal Process..