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Link Performance of an CDMA-Based Time-of-Flight Ranging by Using LED Visible Light

  • Wang, Yang (Department of Electronic Engineering, Inha University) ;
  • Liang, Chengchao (Department of Electronic Engineering, Inha University) ;
  • Su, Xin (Department of Electronic Engineering, Inha University) ;
  • Chang, KyungHi (Department of Electronic Engineering, Inha University)
  • 왕양 (인하대학교 전자공학과) ;
  • 양승초 (인하대학교 전자공학과) ;
  • 소신 (인하대학교 전자공학과) ;
  • 장경희 (인하대학교 전자공학과)
  • Received : 2012.07.11
  • Accepted : 2012.09.28
  • Published : 2012.10.30

Abstract

The use of ranging sensors on automobiles is becoming common with the desire of traffic safety by providing drivers the information of the relative distance between the vehicles. In this paper, the LED visible light ranging system different from the conventional ranging systems using the RF signal is investigated. For such a system, we propose a novel ranging algorithm which combines the time-of-flight (TOF) with the CDMA technology. Via the CDMA technology, the TOF ranging system can accurately distinguish the desired ranging signal from the visible light interferences of the neighbor vehicles. In addition, the proposed system can also overcome the light noise from other luminaries, i.e. sun-light, traffic-light, and so on. The simulation results show that the CDMA-based LED ranging system has a significant improvement for the ranging accuracy compared with the case without employing the CDMA.

Keywords

References

  1. R. Roberts, P. Gopalakrishnan, and S. Rathi, "Visible light positioning: automotive use case," in Proc. IEEE Vehicular Technology Conference 2010 (IEEE VTC-spring 2010), pp.1-6, Taipei, Taiwan, April 2010.
  2. S. Rajagopal, R. D. Robert and S. K. Lim, "IEEE 802.15.7 visible light communication : modulation schemes and dimming support," IEEE Comm. Magazine, vol. 50, no. 3, pp. 72-82, Mar. 2012.
  3. C. Kaiyun, C. Gang, and X. Zheng, "Line-of-sight visible light communication system design and demonstration" in Proc. Communication Systems, Networks and Digital Signal Processing 2010, (CSNDSP-2010), pp. 621-625, Newcastle, UK, July 2010.
  4. D. R. Kim, S. H. Yang, and Y. H. Son, "Line-of-sight visible light communication system design and demonstration" in Proc. Internaticnal Conference on Signal Processing and Communication Systems 2011 (ICSPCS-2011), pp. 1-7, Hawaii, US, Dec. 2011.
  5. J. S. Lee and L. E. Miller, CDMA Systems Engineering Handbook. 2nd ED., Boston and London: Artech House Press, 2003.
  6. Siddharth Jain, Technical report on a survey of Laser Range Finding. pp. 1-14, Aug. 2003, from http://www-video.eecs.berkeley.
  7. C. C. Liang, Y. Wang, and K. H. Chang, "Fundamentals and applications of VLC on distance measurement," in Proc. KICS Summer Convergence Conference 2012 (KICS-summer 2012), pp. 603-604, Jeju Island, Korea, June 2012.
  8. T. Komine, and M. Nakagawa, "Fundamental analysis for visible-light communication system using LED lights," IEEE Trans. on on Consumer Electronics, vol.50, no.1, pp. 100-107, Feb. 2004. https://doi.org/10.1109/TCE.2004.1277847