Experimental demonstration of GFDM-OFDM hybrid modulation in an IM-DD system

A GFDM-OFDM hybrid modulation scheme is experimentally demonstrated in a 60-Gb/s IM-DD system. 1.9-dB and 3.1- dB receiver sensitivity improvements are achieved compared to the conventional GFDM and OFDM signals in the back-to-back case, respectively.