With the aim of distribution of millimeter wave signals while merging of radio frequency and optical fiber technologies, A Radio over Fiber (RoF) system is taking under research and its time-domain analysis is used while considering the phase noise effect with a power spectral density (PSD) and autocorrelation function to its performance improvements. This analysis uses a dual-drive Mach-Zehnder modulator (DD-MZM) and photodetector (PD) for transmitted single sideband (OSSB) signal as the OSSB signal is tolerable for power degradation due to a chromatic fiber-dispersion effect. In time domain, we have shown the output current of PD is the function of Phase Noise from Laser linewidth and RF Oscillator linewidth. In this paper, we have calculate the received signal power with respect to the power spectral density (PSD), derive a closed-form of signal to noise ratio and shall analyse the bit error rate (BER) performance using different modulation scheme. In simulation results, we have illustrated the variation of signal to noise ratio with respect to RF Oscillator linewidth under different values of percentage of received power. Also, we shall observe the BER performance using different modulation scheme variation with RF Oscillator linewidth. Finally, we suggest the condition for choosing RF Oscillator linewidth for better performance of RoF system for its future implementation.

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Rf Oscillator Laser Linewidth Dual-drive Mach-zehnder Modulator (dd-mzm) Optical Single Sideband (ossb) Oscillator Phase Noise And Power Spectral Density (psd).