Experimental demonstration of NOMA visible light communications based on SCFDM

We experimentally demonstrated a non-orthogonal multiple access (NOMA) scheme in combination with single carrier frequency division multiplexing (SCFDM) for visible light communications (VLC), which in principle could provide high spectral efficiency, high tolerance against multi-path and a lower peak-to-average ratio (PAPR). Compared with orthogonal frequency division multiplexing (OFDM) based NOMA, NOMA-SCFDM has higher tolerance to LED nonlinearity and better bit error rate (BER) performance.