Comparative Study of Error Performance in Modulation Schemes for VLC Systems

Abstract

— Wireless communication technology is emerging very fast with reliable communication lead to emergence of very
numerous technologies. There are various modulation schemes suitable in optical wireless communication like OOK, PPM, DPIM, DHPIM,
and OFDM. As modulation techniques is categorized into bandwidth & power efficient but for error performance there are few
assumptions where there is no bandwidth limitation. In this paper we analyze the error rate in AWGN channel for these modulation
techniques & the combined result shows that DPIM, DH-PIM & OFDM are applicable for future applications.