Radio over Fibre for Wireless Access

Radio over Fibre technology (RoF), is a technology where the light modulated by a radio signal and then passed through the optical fibre. This technology can be used in wireless communication. There is a optical link between the base station and control station and a wireless link between the base station and mobile station. Previously the link between the BS and CS were coaxial cable which have been replaced by optical fibre as it offers many advantages like low loss, high bandwidth, small size, low cost. In this work we have calculated the CNR for the Rof system as a function of received power and oscillator linewidth and CNR as a function of laser linewidth and transmission distance using MATLAB SOFTWARE.