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This paper investigates the implications of topologies on the average path length of networks, which is the dominant parameter affecting performance. Based on the available literature, classic network topologies are reviewed and analyzed. Furthermore, a new class of communication networks is introduced, and a topology design algorithm is proposed to improve network performance in terms of average...
In this work we present new architectures having new sets of link connections for mesh network (Manhattan St. type) and a for ring topology, with both using unidirectional and (one case) bi-directional links. For the comparative analysis we adopt two types of optical node configurations for both ring and mesh topologies, using 2??2 and 3??3 input/output connections. Other node functionalities such...
Traffic engineering based on cross-layer communications to counter-act inter-channel impairments in optical networks is shown to yield significant throughput gains for a variety of traffic models.
In the wavelength division multiplexing (WDM) optical networks, user's requirement is much less (in Mbps range) than the capacity of a wavelength channel (in Gbps range) and number of wavelength channels is limited in a fiber due to several constraints. Each wavelength channel between end nodes requires a pair of transmitter and receiver for digital to optical conversion. In order to decrease the...
Component failure in a WDM network is a serious problem that has attracted considerable attention in recent times. In a standard protection (or restoration) scheme the objective is to preserve the logical topology by switching over to back-up paths (or by setting up new lightpaths) after a fault occurs. In this paper we have proposed a new scheme where we handle a fault simply by modifying the traffic...
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