Abstract
Motivated by the design goals of Global Environment for Network Innovation
(GENI), we consider how to support the slicing of link bandwidth resources
as well as the virtualization of optical access networks and optical backbone
mesh networks. Specifically, in this paper, we study a novel programmable
mechanism called optical orthogonal frequency division multiplexing (OFDM)/orthogonal
frequency division multiple access (OFDMA) for link virtualization. Unlike
conventional time division multiplexing (TDM)/time division multiple access
(TDMA) and wavelength division multiplexing (WDM)/wavelength division multiple
access (WDMA) methods, optical OFDM/OFDMA utilizes advanced digital signal
processing (DSP), parallel signal detection (PSD), and flexible resource management
schemes for subwavelength level multiplexing and grooming. Simulations as
well as experiments are conducted to demonstrate performance improvements
and system benefits including cost-reduction and service transparency.
© 2009 IEEE
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