KEYWORDS: Radio over Fiber, Wavelength division multiplexing, Modulation, Modulators, Signal attenuation, Upconversion, Radio optics, Heterodyning, Broadband telecommunications, Analog electronics
Radio-over-Fiber (RoF) is a promising technology with a number of benefits including huge
bandwidth, high reliability, transparency and flexibility that make it attractive to fulfill the future
broadband bandwidth requirements. These optical-wireless network architectures have potential
to support broadband wireless access at over 1Gbps. Potential areas include WDM-based RoF
architectures with dispersion mitigation to further enhance spectral efficiency of overall system.
Cost-effective full-duplex solution that supports uplink and downlink data transmission at high RF
is another area to focus and is covered in the review. This paper explains the RoF approach and
various related aspects. It also provides a comparative analysis on recently proposed RoF
architectures. In addition, strengths and weaknesses of proposed architectures and employed
techniques are identified with future directions for possible enhancements indicated.
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