Design of PON using VQ-based fiber optimization

Abstract

The rapid development of broadband technologies has already set the stage for next generation access networks with optical fibers proliferating from the long haul backbone into the local area networks (LANs). However, the bottleneck of bandwidth availability still remains at the end-user. Passive optical network (PON) has the potential to solve this “last mile problem”. In this paper we have investigated into the major research issues regarding the deployment of the PON technology. An estimate of effective bandwidth consumption by residential and business users is obtained to maximize the bandwidth utilization. A new vector quantization (VQ) based location determination algorithm is formulated to determine the optimal location of splitters, thus minimizing the fiber layout cost. Inherent drawbacks of the standard ranging scheme is also discussed. Simulation results corroborate the maximization of bandwidth utilization, minimization of fiber layout cost and points out the necessity of an efficient ranging scheme to reduce the ranging overhead time.