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Transmission limitations of WiMax over fiber transmission employing optical upconversion schemes

Medeiros M C R,; Thakur M P,; Paula Laurêncio,; J. E. Mitchel,; (2012) Transmission limitations of WiMax over fiber transmission employing optical upconversion schemes. In: (Proceedings) ICTON 2012 (Invited).

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Abstract

WiMax is a promising technology for the delivery of last mile wireless broadband access which when combined with fiber access networks can provide cost effective solution for next generation integrated networks. WiMax fiber transmission employing up-conversion techniques by means of external modulation of an optical carrier by LiNbO3 Mach-Zehnder (MZ) modulators has proven to be a reliable approach. However, robustness of such techniques against dispersion is impaired by the finite extinction ratio (ER) encountered in commercially available MZMs which is typically 20-35 dB. This paper analyses through simulation the effect of the ER on the transmission over optical fiber of up-converted WiMax signals emphasizing the importance of configurations able to compensate the finite extinction ratio of commercially available MZ modulators.

Type:Proceedings paper
Title:Transmission limitations of WiMax over fiber transmission employing optical upconversion schemes
Event:ICTON 2012 (Invited)
Location:Warwick
Keywords:Radio over fiber, Orthogonal Frequency Division Multiplexing, 60 GHz, fiber chromatic dispersion, Optical Single Sideband modulation, inter-subcarrier interference, Relative Constelation Error
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
UCL > School of BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office

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