Strategies for resource provisioning in optical networks supporting broadband wireless access networks

We investigate the provisioning of optical-frequency (wavelength) resources in optical networks that support broadband wireless access networks (BWANs). Millimeter-wave–over–fiber technology with operation in the 60-GHz license-free band is considered for the BWANs. The WDM-based optical network (handling BWAN traffic) is heterogenous, implying that it also bears traffic originating from (or destined for) wireline terminals. A discrete-event simulation is devised to ascertain the minimum number of wavelength channels required for various cases. Three WDM transmission schemes (pure, semihybrid, and hybrid) are described and used in the simulations. Hybrid WDM was observed to require the least number of wavelengths. However, the easily implementable pure-WDM scheme could be considered even if only a limited number of wavelength converters were deployed in the network.

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