An Appropriate Modulation Scheme for High Density Visible Light Communicaton System

xdlinchenzhou@126.com Abstract. An appropriate modulation scheme SC-PPM is considered in this a rticle for the high density visible light communication (VLC) system. Compared with OOK, SC-PPM is a more power efficient and reliable scheme and it can achieve the requirement for both illumination and communication. An optimization problem is formulated to reduce the total transmitted energy produced by LED lamps while satisfying the desired illuminance level and communication quality index. the simulation result show that SC-PPM can save the energy consuming compared with traditional PPM. I. Introduction