Abstract
Radio over Fiber (RoF) is being used increasingly for the distribution of cellular/radio and CATV signals to extend both coverage and capacity within buildings and also in metropolitan areas. In this paper we have investigated by simulating the influence of Continuous Wave (CW) laser source power operating at a center frequency of 1550 nm for RZ and NRZ data formats at different bit rates of 2.5Gb/s, 5.0Gb/s and 10Gb/s for SCM (sub carrier multiplexing) based RoF system. The simulated results have been analyzed in this paper for fixed no. of channels (N = 70) and constant dispersion level (16.75 ps/nm/km) over a bidirectional single mode optical fiber. Further it has been investigated in this paper that the NRZ data format is comparatively better for RoF communication systems over short to medium transmission distances (from 2–12 km) for wireless/mobile communication than RZ data format. Maximum Q-factor of 15.94 dB with minimum bit error rate (less than 10−9 ) at a bit rate of 5.0 GB/s has been achieved for this RoF communication model.
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