Cost-effective radio over fiber system for multi service wireless signal

The feasibility of the simultaneous transmission of several wireless signals over a cost-effective Radio over Fiber (RoF) link is investigated. A RoF link simulation tool is presented and applied to validate the experimental results in the case of the transmission of two wireless signals, one compliant to Universal Mobile Telecommunications Service (UMTS) and one to Worldwide Interoperability for Microwave Access (WiMAX) standards. The cross-talk between the transmitted signals is showed and related to the RoF transmitter's characteristic in terms of frequency chirping. Both for uplink and downlink of the wireless signal RoF distribution system practical design aspects are finally evidenced.

Research Highlights
► Simultaneous transmission of UMTS and WiMAX signals in a Radio over Fiber link.
► Theoretical and experimental analysis of Adjacent Channel Leakage Ratio (ACLR).
► Major importance of Radio over Fiber transmitter characteristics.
► Considerations on design aspects for uplink and downlink.
► Feasibility of cost-effective multi service wireless distribution systems.