Browse > Article
http://dx.doi.org/10.7840/KICS.2011.36A.3.189

PAPR Reduction Technique and BER Performance Improvement in OFDM-based Wireless Visible Light Communication  

Ryu, Sang-Burm (충북대학교 전자정보대학 전자공학과)
Ryu, Heung-Gyoon (충북대학교 전자정보대학 전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.3A, 2011 , pp. 189-197 More about this Journal
Abstract
OFDM systems are much studied for the recent high speed wireless optical communication system. OFDM system has basically high PAPR and ICI easily generated because of non-linearity and RF impairments. In the wireless optical communication system, optical output power driven by current of LED is not linear so that transmission signals are distorted. Therefore, research about reception performance of this nonlinear optical output emitted by non-linear LED transfer function and OFDM signal has been conducted. Nonlinear effect of LED is different from nonlinear effect of OFDM system in the conventional radio communication system, which degrades the BER performance. In this paper, we apply non-linear transfer function of recently studied LED into OFDM system. So, for reducing the PAPR and suppressing the ICI in frequency domain of receiver, we suggest a new PAPR reduction technique to reduce non-linear distortion of LED and an adaptive ICI suppression algorithm so that BER performance may be improved. Also, the proposed method is verified through simulation results.
Keywords
visible light communication; PAPR; ICI; white LED; DFTS OFDM;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. Panta, K. J. Armstrong, "Effects of phase noise on performance of OFDM systems using an ICI cancellation scheme", IEEE Transactions on Broadcasting, Vol.49, No.2, pp.221-224, Jun. 2003.   DOI   ScienceOn
2 Hsiao-Chun Wu, Xiaozhou Huang, "Joint phase/amplitude estimation and symbol detection for wireless ICI self-cancellation coded OFDM systems," IEEE Transactions on Broadcasting, Vol.50, pp.49-55, 2004.   DOI   ScienceOn
3 H. G. Ryu, Y. Li, and J.S. Park, "An improved ICI reduction method in OFDM communication system", IEEE Transactions on Broadcasting, Vol.51, Issue 3, pp.395-400, Sep. 2005.   DOI   ScienceOn
4 이영선, 김남일, 김상우, 유흥균, "위상 잡음 보상 과 PAPR 저감을 고려한 DFT-Spread OFDM 통 신 시스템 설계와 성능 평가, " 한국전자파학회논문지, 제 17권, 7호, pp.638-647, 7월, 2006년
5 I. Neokosmidis, T. Kamalakis, J.W. Walewski, B. Inan, T. Sphicopoulos, "Impact of Nonlinear LED Transfer Function on Discrete Multitone Modulation: Analytical Approach," Journal of Lightwave Technology, Vol.27, pp.4970-4978, Nov. 2009   DOI   ScienceOn
6 H. Elgala, R. Mesleh, H. Haas, " study of LED nonlinearity effects on optical wireless transmission using OFDM," Wireless and Optical Communications Networks, pp.1-5, 2009.
7 R.J. Baxley and G.T. Zhou, "Comparing Selected Mapping and Partial Transmit Sequence for PAR Reduction," IEEE Transactions on Broadcasting, Vol.53, pp.797-803, Dec. 2007   DOI   ScienceOn
8 G. Huang, A. Nix, and S. Armour, "Decision feedback equalization in SC-FDMA", IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, pp.1-5, Sept. 2008.
9 Armstrong, "Analysis of new and existing methods of reducing intercarrier interference due to carrier frequency offset in OFDM," IEEE Transactions on Communications, Vol.47, No. 3, pp.365-369, Mar.1999   DOI   ScienceOn
10 Visible Light Communications: Tutorials, IEEE 802.15 VLC SG, 2008. 3. 17.
11 B. nan, S.C.J. Lee, S. Randel, I. Neokosmidis, A.M.J. Koonen, J.W. Walewski, "Impact of LED Nonlinearity on Discrete Multitone Modulation," IEEE/OSA Journal of Optical Communications and Networking, Vol.1, pp.439-451, Oct. 2009   DOI   ScienceOn