BER Performance of OFDM based hybrid PLC-VLC system

Abstract

In the present paper, the BER performance of integrated power line communication Multiple-input multiple-output visible light communication (PLC-MIMO-VLC) system has been analysed using OF DM modulation technique. The Orthogonal Frequency Division multiplexing (OFDM) technique has been used to mitigate the effect of impulsive noise and Intersymbol interference (ISD introduced due to multipath propagation in PLC system. The simulation has been done for two scenarios using Line-of-sight (LOS) and LOS plus first reflection (L-R1) signals in MIMO-VLC channel. In the scenario 1, the separation between LED is taken as 0.6m and in scenario 2, the separation is 0.2m. For scenario 1, it has been found that for BER of $10^{-5}$, the LOS signal outperforms L-R1 signal by a gain-margin of15 dB in SNR For scenario 2, the BER increases by a gain margin of 20 dB and 6 dB for LOS and L-R1 signals respectively as compared with scenario 1.