4-QAM and 16-QAM modulation employing single dual drive Mach-Zehnder modulator and FBG for OFDM-radio-over-fiber system

In this work, we have simulated a 4QAM and 16QAM based OFDM-RoF system employing FBG centered dispersion compensator and using single DD-MZM capable of directly generating a SSB signal over a transmission distance of 70km and 50km respectively. Simulation results are presented for the above schemes for data rate of 10Gbps without using any optical amplifier in the transmission path.