Visible light communication (VLC) is a short range optical wireless communication using the light emitting diode (LED) lights, which can provide both illumination and communication. In this paper, we characterize the indoor multipath dispersion for VLC and propose multiple pulse position modulation (MPPM) as a power efficient modulation. Due to the reflections in indoor environment, equalization process is essential to mitigate inter-symbol interference (ISI). Frequency domain equalizer (FDE) is implemented to reduce computational complexity. We evaluate communication performance in terms of bit error rate (BER) and the spectral efficiency. Simulation results show that the proposed system yields a comparable BER performance to other equalization systems with lower complexity.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.