Radio over fiber is becoming an increasingly important technology for the wireless market since it introduces a good data transmission rate and large bandwidth. We have implemented a bidirectional radio over fiber (ROF) system. It is combination of SCM-ROF and optical wavelength division multiplexing (WDM) techniques to simplify the access network architecture. The combination of two different types has been performed to provide high bit data rate and wide bandwidth in cellular communication. The system allows different Base Stations (BS's) to be fed by a common fiber. Different wavelength channels can be allocated to different BSs depending on user requirements. This paper consists of two parts: I. Introduction of Radio of Fiber technology & methodology II. Quality parameter & Challenges for Implementation. Wireless communication was one of the paramount ways in term ofhigh bandwidth data communication. Technology like microwave, wireless, optical communication & their combination are used and have improved the performance of the communication. Radio over Fiber technology (RoF), an Integration of microwave and optical communication is an essential technology for the provision of unmetered access to broadband wireless communications. For the future provisions of broadband, multimedia the radio over fibre systems are a good alternative. RoF systems are used basically because of their low loss and extremely wide bandwidth and robustness. Radio over fibre can use millimetre waves and serve as a high speed wireless local or personal area network. In this paper various parts of the Radio over fibre systems are studied, ROF is an analog optical link transmitting optical carrier modulated by the radio frequency signal. This technique facilitates to transmit radio frequency signal through the optical fiber in downlink and uplink