Call-level Analysis of Hybrid WDM-OCDMA Passive Optical Networks with Finite Traffic Sources
نویسندگان
چکیده
Passive Optical Network (PONs) are becoming a mature concept for the provision of enormous bandwidth to endusers with low cost. In this paper we study the call-level performance of two PON configurations: the OCDMA-PON and the Hybrid WDM-OCDMA PON. We propose analytical models for calculating connection failure probabilities (due to unavailability of a wavelength) and call blocking probabilities (due to the total interference on a call that may exceed a permissible threshold) in the upstream direction. The PONs are described/modeled by one-dimensional Markov chains. By solving them, we derive recurrent formulas for the blocking probabilities. The proposed analytical models are validated through simulation; their accuracy was found to be absolutely satisfactory.
منابع مشابه
Blocking Analysis in Hybrid TDM-WDM Passive Optical Networks
Optical access networks are the ultimate solution to the problem of the last mile bottleneck between high-capacity metro networks and customer premises, capable of delivering future integrated broadband services. Nowadays, passive optical networks are the most promising and cost-effective class of fiber access systems. This rapid evolvement of fiber in access networks motivates the study of the...
متن کاملPerformance analysis of OCDMA PON configuration supporting multi-rate bursty traffic with retrials and QoS differentiation
An Optical Code Division Multiple Access (OCDMA) Passive Optical Network (PON) is a highly promising PON configuration, thanks to the potential of OCDMA technology in eliminating channel contention and efficiently supporting multi-rate traffic with different QoS requirements. In this paper, we provide a mathematical framework for a call-level performance analysis of an OCDMA PON that accommodat...
متن کاملOptical Code-Division Multiple-Access and Wavelength Division Multiplexing: Hybrid Scheme Review
Problem statement: Hybrid Optical Code-Division Multiple-Access (OCDMA) and Wavelength-Division Multiplexing (WDM) have flourished as successful schemes for expanding the transmission capacity as well as enhancing the security for OCDMA. However, a comprehensive review related to this hybrid system are lacking currently. Approach: The purpose of this paper is to review the literature on OCDMA-W...
متن کاملPerformance and Confidentiality Comparison of Different Hybrid SAC/OCDMA-WDM Overlay Schemes
Code pulses of a spectral amplitude coding/optical code division multiple-access (SAC/OCDMA) system are overlaid onto a multichannel wavelength division multiplexing (WDM) system. Modified quadratic congruence (MQC) codes are developed as the signature codes for the SAC/OCDMA system. The developed code is to avoid the overlapping between signals of both systems with no use of notch filters. In ...
متن کاملMonitoring and Fault-Recovery Capacity with Waveguide Grating-based Optical Switch over WDM/OCDMA-PON
In order to implement flexibility as well as survivable capacities over passive optical network (PON), a new automatic random fault-recovery mechanism with array-waveguide-grating based (AWG-based) optical switch (OSW) is presented. Firstly, wavelength-division-multiplexing and optical code-division multiple-access (WDM/OCDMA) scheme are configured to meet the various geographical locations req...
متن کامل