A Novel Transmission System using Broadband Fiber Optic link for Remote Antenna
Pages : 299-309Download PDF
Worldwide Interoperability for Microwave Access (WiMAX) is a broadband wireless data communications technology based on the IEEE 802.16 standard for providing high speed data over a wide area. This wireless network, when based on radio-over-fiber (RoF) technology, provides the most useful solution to the ever increasing demand for larger transmission bandwidth. In this paper, a novel transmission system for seamless integration of RoF with centralized lightwave Orthogonal Frequency Division Multiplexing (OFDM) for Next-Generation Passive Optical Network (NG-PON) based on an integrated external modulator is demonstrated. Here we have investigated the performance limitation when transmitting WiMAX signal over RoF/PON, the change in Signal-to-Noise Ratio (SNR) with the receiver power when varying fiber length with splitter ratio, and the number of Base Stations (BSs) that can be supported at a particular distance in a PON. The result shows that RIN has negative effects by limiting the SNR of the subcarriers.
Keywords: WiMAX, RoF, OFDM, PON, SNR, BSs, RIN.