The Performance Analysis Fiber Optic Dispersion on OFDM-QAM System
Performance of Orthogonal Frequency Division Multiplexing (OFDM) combined with Quadrature Amplitude Modulation (QAM) has been analyzed in presence of fiber optic dispersion. The influence of dispersion on the OFDM spectrum is investigated with fiber lengths, bit rates, no. of channels and source line-widths. The inter-channel interference occurs due to dispersion-induced broadening of OFDM spectrum. The results obtained from the OFDM-QAM system demonstrate that the influence of dispersion is lower in OFDM - QAM spectrum in comparison with single bit transmission with same bandwidth.