Full-duplex relay VLC in LED lighting triangular system topology

Visible light communications (VLC), in terms of luminaire-to-luminaire communications, can play an important role in a wide range of applications in indoor light emitting diode (LED) lighting systems. One of the main challenges in such VLC systems though is the limited range of reliable communications. In order to enhance the VLC range without compromising the network throughput, we consider full-duplex relay VLC in a general triangular topology under amplify-and-forward and decode-and-forward processing at the relay luminaire. We analyze the system performance in terms of bit error rate (BER) and show that multiple orders of magnitude improvement in BER is achieved as compared to direct link VLC under practical indoor conditions.