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The main aim of this paper is to analyze the influence of the modulation techniques; on the performance of coded orthogonal frequency-division multiplexing (COFDM) based Radio over Fiber (RoF) system. The modelling of the COFDM scheme for RoF system has been completely done by using software Optisystem. Both analysis and simulation results are presented for 16-QAM and 16-QPSK modulation techniques and performance is analyzed for optical amplifier and Erribium Doped Fiber Amplifier (EDFA). The parameter Quality factor (Q) of the COFDM signal transmitted through the fiber optic link is examined. From the analysis for Radio over Multimode Fiber with link length of 2 km (medium haul communication) optical amplifier gives better results than EDFA for either of the modulation schemes for set of bit rates.

Performance Analysis of Coded OFDM Signal for Radio over Fiber Transmission