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Power-optimal Design of Multicast Light-trees in WDM Networks

Fen Zhou 1 Miklós Molnár 2 Bernard Cousin 3 Gwendal Simon 1
2 MAORE - Méthodes Algorithmes pour l'Ordonnancement et les Réseaux
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
3 ATNET - Advanced Technolgy in Networking
Abstract : Given a multicast session in Wavelength Division Multiplexing (WDM) networks, we try to find the multicast light-trees with the minimum power budget while taking into account the optical power loss as light splitting loss, node tapping loss and light attenuation loss. Although light splitting causes non-linear power relationship, we succeed to formulate this problem as a Mixed-Integer Linear Programming (MILP) by developing a set of equivalent linear equations to replace the non-linear ones. The distribution of power loss is analyzed by simulations, which suggests to bound the combined power loss ratio of the node tapping loss and the light attenuation in each source-destination path, and make power-symmetric light-trees by properly using light-splitters in order to minimize the overall power loss.
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Contributor : Miklos Molnar <>
Submitted on : Thursday, December 15, 2011 - 3:42:58 PM
Last modification on : Wednesday, June 16, 2021 - 3:41:57 AM



Fen Zhou, Miklós Molnár, Bernard Cousin, Gwendal Simon. Power-optimal Design of Multicast Light-trees in WDM Networks. IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2011, 15 (11), pp.1240-1242. ⟨10.1109/LCOMM.2011.090611.111529⟩. ⟨lirmm-00652433⟩



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