Earticle

초록

영어

In this paper, we proposed a new dimming control scheme by using direct sequence spreading coding (DSSC) scheme in visible light communication (VLC). VLC systems using LED lighting can provide illumination functions and communication services at the same time. In order to provide simultaneous illumination and communication services, dimming control should be considered. Dimming control means that LED lighting should maintain a constant brightness in accordance with user requirements while communication services are offered. In IEEE 802.15.7 VLC standard, on-off keying (OOK) and variable pulse position modulation (VPPM) are defined as pulse modulation schemes for dimming control. In particular, 4B/6B, 8B/10B block coding and Manchester coding schemes have been proposed for stable dimming control in OOK. However, in such a case, stable dimming control is possible although the communication performance is degraded. In order to solve those problems, we propose a VLC system based on OOK modulation with DSSC. The proposed system can simultaneously stabilize dimming control and improve communication performance by obtaining spread diversity gain. The simulation results show that the proposed system provides superior dimming and BER performances compared to conventional dimming modulation schemes.

목차

Abstract
 1. Introduction
 2. Dimming Properties of Conventional Modulation Schemes
  2.1. Dimming Properties
 3. Proposed System
 4. Simulation Results and Analysis
  4.1. Optical Channel Noise Model
  4.2. Simulation Results
 5. Conclusions
 References

키워드

저자

• Kyuntak Kim [ Department of Electronics and Radio Engineering, Kyunghee University, Korea ]
• Kyujin Lee [ 2Department of Electronic Engineering, Semyung University, Korea ]
• Kyesan Lee [ Department of Electronics and Radio Engineering, Kyunghee University, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605