NDLI: Effect of impairment modeling errors on reachability graph based lightpath setup in translucent optical networks

Content Provider	IEEE Xplore Digital Library
Author	Chava, V.S. Salvadori, E. Zanardi, A. Dalsass, S. Galimberti, G. Tanzi, A. Martinelli, G. Gerstel, O.
Copyright Year	2011
Description	Author affiliation: Cisco Photonics, Via Philips 12, Monza, Italy 20052 (Galimberti, G.; Tanzi, A.; Martinelli, G.; Gerstel, O.) \|\| Create-Net, Via Alla Cascata 56C/D, Trento, Italy 38100 (Chava, V.S.; Salvadori, E.; Zanardi, A.; Dalsass, S.)
Abstract	GMPLS-based transparent optical networks suffer from accumulation of physical layer impairments (PLIs) and wavelength continuity constraint along the transparent optical path. To increase optical reach, resource utilization, and average call acceptance ratio (and hence the revenues), network operators resort to translucent optical networks. In these networks a limited number of regenerators are placed at a selected set of network nodes. Hence, it is important to develop GMPLS-based distributed optical control plane (OCP) for on-demand lightpath provisioning considering both PLIs and availability of regenerators. In this paper, we propose and study a novel three phase approach — reachability graph construction, route computation on reachability graph, and signaling, for routing lightpaths with multiple transparent segments. However, the reachability graph — which contains all network nodes and a set of new optically reachable links — is computed based on approximate PLIs models. Hence, in this paper we analyze the effect of PLIs modeling errors on the network performance in two scenarios — fixed additional OSNR penalty and adaptive cost penalty based on error feedback. The simulation results suggest that adaptive cost penalty is independent of network topological characteristics and provides a good trade-off between blocking probability and additional number of required regenerators.
Starting Page	1
Ending Page	6
File Size	131712
Page Count	6
File Format	PDF
ISBN	9781424495962
e-ISBN	9783901882425
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-08
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	IFIP
Subject Keyword	Computational modeling quality of transmission optical layer impairments Optical fiber networks Repeaters Translucent optical networks Adaptive optics Optical noise Optical amplifiers IA-RWA reachability graph Signal to noise ratio
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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