The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지
DOI QR코드

DOI QR Code

Additional Data Transmission Technique Based on SSB-OFDM Visible Light Communication System

SSB-OFDM 가시광 통신 기반 부가정보 전송기법

  • Received : 2013.06.14
  • Accepted : 2013.08.08
  • Published : 2013.08.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, additional data transmission scheme was proposed based on SSB-OFDM Communication system which was know as efficient technique for bandwidth, because it used only single side band instead of double side band. When sending additional data which should be well spreaded for low power characteristics and error robustness. Gold code was selected for spreading code because it has excellent low-cross correlation characteristics. Through computer simulation, the validity was proved that proposed system is well worked with SSB-OFDM system.

본 논문에서는 특정 주파수 대역을 이용하는 통신 방식에서 기저 대역의 주파수 보다 2배의 주파수 대역을 점유하여 발생하는 주파수 자원의 낭비 해결하기 위한 SSB(Single Side Band) 방식의 OFDM(Orthogonal Frequency Division Multiplexing) 시스템에 부가적인 데이터를 동시에 전송하는 방식을 제안하였다. 골드 코드(Gold code)를 이용하여 부가 데이터를 대역 확산하여 전송하며, SSB-OFDM 신호에 영향을 주지 않도록 아주 작은 신호의 크기를 갖도록 하였다. 모의실험을 통하여 SSB-OFDM 시스템과 부가전송 데이터 시스템이 동시에 동작할 수 있음을 확인하여, 제안한 방식이 유효함을 입증하였다.

Keywords

References

  1. T. Kang, "Development strategy of future technology for LED and Communication industry," TTA J., no. 123, pp. 12-17, June 2009.
  2. D. Kim, S. Lim, and T. Kang, "Application service model of visible light wireless communication as a LED light and communication convergence," J. KICS, vol. 26, no. 5, May 2009.
  3. Y. Tanaka, K. Komine, S. Haruyama, and M. Nakagawa, "Indoor visible light data transmission system utilizing white LED lights," IEICE Trans. Commun., vol. E86-B, no. 8, pp. 2440-2454, Aug. 2003.
  4. J. Armstrong, "OFDM for optical communications," J. Lightw. Technol., vol. 27, no. 3, pp. 189-204, Feb. 2009. https://doi.org/10.1109/JLT.2008.2010061
  5. H. Elgala, R. Mesleh, H. Haas, and B. Pricope, "OFDM visible light wireless communication based on white LEDs," in Proc. Int. Conf. Veh. Technol. Conf (VTC2007-Spring), pp. 2185-2189, Dublin, Ireland, Apr. 2007.