PAPR Reduction for OFDM based Visible Light Communication Systems using Proposed Hybrid Technique

Document Type : Original Article

Authors

1 Dept. of Electronics and Electrical Comm., High Institute of Engineering and Technology, Kafrelsheikh, EGYPT.

2 Dept. of Electronics and Electrical Comm., Faculty of Electronic Eng., Menoufia University, 32952, Menouf, EGYPT.

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is utilized with visible light communication (VLC) systems to decrease the impacts of inter-symbol interference (ISI) and to achieve communication with high speed of data transmission and huge bandwidth. In any case, the main problem in OFDM based VLC systems is high peak-to-average power ratios (PAPRs). This paper proposes a hybrid PAPR reduction technique based on signal transformation combined with clipping. The Hadamard transform is used in the proposed technique to reduce the PAPR without affecting the bit error rate (BER) of the VLC systems. The optimum clipping threshold at which the PAPR is reduced simultaneously with the improvement the BER of the VLC systems is also determined. The performance of the proposed system is assessed in terms of complementary cumulative distribution function (CCDF) and the BER. The obtained results demonstrate that the proposed procedure can simultaneously decrease the PAPR and achieve good BER performance compared to the OFDM based VLC system.

oke-width: 0px; "> [1] Z. Ghassemlooy, W. Popoola, and S. Rajbhandari, Optical Wireless
Communications: System and Channel Modelling with MATLAB, CRC
Press, 2012.
[2] 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. 100107, 2004.
[3] S. Randel, F. Breyer, S. C. Lee, and J. W. Walewski, “Advanced
modulation schemes for short-range optical communications,” IEEE
Journal of Selected Topics in Quantum Electronics, vol. 16, no. 5, pp.
12801289, 2010.
[4] T. Komine and M. Nakagawa, “Integrated system of white led visible light
communication and power-line communication,” IEEE Transactions on
Consumer Electronics, vol. 49, no. 1, pp. 7179, 2003.
ebkit-text-size-adjust: auto; -webkit-[5] S. Arnon et al.: “Advanced Optical Wireless Communication Systems”,
Cambridge Uni. Press, July 2012.
[6] S. Haruyama “Visible light communication,” IEICE Trans.Fundamentals,
vol. J84-A, No. 12, pp. 12841291, Dec, 2003.
[7] L. Grobe, A. Paraskevopoulos, J. Hilt, D. Schulz, F. Lassak, F. Hartlieb, C.
Kottke, V. Jungnickel, and K.-D. Langer, “High-speed visible light
communication systems,” IEEE Communications Magazine, vol. 51, no.
12, pp. 6066, 2013.
[8] Hoa Le Minh, Dominic 0 Brien, Grahame Faulkner, Lubin Zeng,
Kyungwoo Lee, and Daekwang Jung, "100-Mb/s NRZ Visible Light
Communications Using a Postequalized White LED," IEEE Photonics
Technology Letters, vol. 21, no. 15, pp. 1063-1065,2009.
[9] D. C. O’Brien, L. Zeng, H. Le-Minh, G. Faulkner, J. W. Walewski, and S.
Randel, “Visible
light communications: challenges and possibilities,” in IEEE International
Symposium on
Personal, Indoor and Mobile Radio Communications, ser. ISBN: 978-1-
4244-2644-7/08, Cannes, France, Sept. 2008.
[10] J. Armstrong, “OFDM for optical communications,” J. Lightw. Technol.,
vol. 27, no. 3, pp. 189204, Feb. 2009.
[11] O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, and A. Ayala,
“OFDM over indoor wireless optical channel,” IEE Proc. Optoelectron.,
vol. 152, no. 4, pp. 199204, Aug. 2005.
[12] S. Hranilovic, “On the design of bandwidth efficient signalling for indoor
wireless optical
channels,” International Journal of Communication Systems, vol. 18, no. 3,
pp. 205228, 2005.
[13] J. Armstrong and A. J. Lowery, “Power efficient optical OFDM,”
Electronics Letters, vol. 42, no. 6, pp. 370372, 2006.
[14] Raed Mesleh, Hany Elgala, and Harald Haas, “LED Nonlinearity
Mitigation Techniques in Optical Wireless OFDM Communication
Systems,” Journal of Optical Communications and Networking, vol. 4, no.
11, pp. 865, Oct. 2012.
[15] S. Dissanayake and J. Armstrong, “Comparison of ACO-OFDM,
DCOOFDM and ADO-OFDM in IM/DD systems,” J. Lightw. Technol.,
vol. 31, no. 7, pp. 10631072, April 2013.
[16] Zhenhua Yu, Kai Ying, Robert J. Baxley and G. Tong Zhou, “PAPR
Reduction for Bit-loaded OFDM in Visible Light Communications,”IEEE
Wireless Communications and Networking Conference, 334 339, March
2015.
[17] Zhenhua Yu, Robert J. Baxley, and G. Tong Zhou, “Impulses Injection for
PAPR
just: auto; -webkit-text-stroke-width:Visible Light OFDM Communications,” in Proc. IEEE Global Conference
on Signal
Information Processing (GlobalSIP), Atlanta, GA, 2014, pp. 15.
[18] J. Armstrong and B. J. C. Schmidt, “Comparison of Asymmetrically
Clipped Optical OFDM and DC-Biased Optical OFDM in AWGN,” vol.
12, no. 5, pp. 343345, May 2008.
[19] S. Dissanayake, K. Panta, and J. Armstrong, “A novel technique to
simultaneously transmit ACO-OFDM and DCO-OFDM in IM/DD
systems,” Proc. of IEEE Global Telecommun. Conf., (GLOBECOM), pp.
782786, Dec 2011.
[20] X. Li, et al., “On the Capacity of Intensity-Modulated Direct-Detection
Syste-ms and the Information Rate of ACO-OFDM for Indoor Optical
Wireless Applications,” IEEE Trans Commun, vol. 60, no. 3, March 2012.
[21] Zhenhua Yu, Robert J. Baxley, and G. Tong Zhou, "Distributions of upper
PAPR and lower PAPR of OFDM signals in visible light
communications," in Proc. IEEE Inti. Conference on Acoustics, Speech,
and Signal Processing (ICASSP), Florence, Italy, 2014.
[22] Zhenhua Yu, Robert J. Baxley, and G. Tong Zhou, "Iterative Clipping for
PAPR Reduction in Visible Light OFDM Communications," in Proc. IEEE
Military Communications Conference (MILCOM), Baltimore, pp. 16,
MD, 2014.
[23] S. H. Han and J. H. Lee, “An overview of peak-to average power ratio
reduction techniques for multicarrier transmission,” IEEE Wireless
Communications, vol. 12, no. 2, pp. 5665, Apr. 2005.
[24] J. Armstrong, “Peak-to-average power reduction for OFDM by repeated
clipping and frequency domain filtering,” Electronics Letters, vol. 38, no.
5, pp. 246, Feb. 2002.
[25] A. Aggarwal and T. H. Meng, “Minimizing the peak to average power
ratio of OFDM signals using convex optimization,” IEEE Transactions on
Signal Processing, vol. 54, no. 8, pp. 30993110, Aug. 2006.
[26] M. Park, H. Jun, J. Cho, N. Cho, D. Hong, C. Kang, PAPR reduction in
OFDM Transmission using Hadamard transforms, IEEE Int. Conf.
Commun. 1 (2000).
[27] E.S. Hassan, S.E. El-Khamy, M.I. Dessouky, S.A. El-Dolil, F.E. Abd ElSamie, “Peak-to-average power ratio reduction in spacetime block coded
multi-input multi- output orthogonal frequency division multiplexing
systems using a small overhead selective mapping scheme”, The Institution
of Engineering and Technology, Vol. 3, Iss. 10, pp. 16671674, 200