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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 3, Iss. 4 — Apr. 1, 2011
  • pp: 347–358

An Analytical Approach for Dynamic Wavelength Allocation in WDM–TDMA PONs Servicing ON–OFF Traffic

John S. Vardakas, Ioannis D. Moscholios, Michael D. Logothetis, and Vassilios G. Stylianakis  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 3, Issue 4, pp. 347-358 (2011)
http://dx.doi.org/10.1364/JOCN.3.000347


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Abstract

Optical access systems are now considered a feasible alternative to the predominant broadband access technologies, while, at the same time, passive optical networks (PONs) are viewed as an attractive and promising type of fiber access system. In this paper we present and analyze three basic dynamic wavelength allocation scenarios for a hybrid wavelength division multiplexing–time division multiple access (WDM–TDMA) PON. We propose new teletraffic loss models for calculating call-level performance measures, like connection failure probabilities (due to unavailability of a wavelength) and call blocking probabilities (due to the restricted bandwidth capacity of a wavelength). The PON accommodates bursty service-classes of ON–OFF traffic. The proposed models are extracted from one-dimensional Markov chains, which describe the wavelength occupancy in the PON, and two-dimensional Markov chains, which describe the bandwidth occupancy inside a wavelength. The accuracy of the proposed models is validated through simulation and is found to be quite satisfactory. Moreover, these models are computationally efficient because they are based on recursive formulas.

© 2011 OSA

OCIS Codes
(060.1155) Fiber optics and optical communications : All-optical networks
(060.4264) Fiber optics and optical communications : Networks, wavelength assignment

ToC Category:
Research Papers

History
Original Manuscript: July 29, 2010
Revised Manuscript: January 10, 2011
Manuscript Accepted: January 13, 2011
Published: March 31, 2011

Citation
John S. Vardakas, Ioannis D. Moscholios, Michael D. Logothetis, and Vassilios G. Stylianakis, "An Analytical Approach for Dynamic Wavelength Allocation in WDM–TDMA PONs Servicing ON–OFF Traffic," J. Opt. Commun. Netw. 3, 347-358 (2011)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-3-4-347


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