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Blocking Analysis for Priority Classes in Hybrid WDM-OCDMA Passive Optical Networks

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3 Author(s)
J. S. Vardakas ; Wire Commun. Lab., Univ. of Patras, Patras ; V. G. Vassilakis ; M. D. Logothetis

We study the call-level performance behavior of two Passive Optical Network (PON) configurations in the upstream direction: an Optical Code Division Multiple Access (OCDMA) PON and a hybrid Wavelength Division Multiplexing (WDM)-OCDMA PON. Each PON accommodates 2K service-classes, which are grouped in two service priorities. The latter are denoted by thresholds in accessing the PON resources. The input traffic is assumed quasi-random, (finite number of traffic sources). Our analysis results in recursive formulas for the calculation of the system state probabilities, as well as of the call blocking probabilities and connection failure probabilities. To evaluate the proposed models the analytical results are compared with simulation results. The comparison reveals that the accuracy of the proposed analysis is quite satisfactory.

Published in:

Telecommunications, 2009. AICT '09. Fifth Advanced International Conference on

Date of Conference:

24-28 May 2009