A WDM CHANNEL SHARING SCHEME FOR MULTIHOP LIGHTWAVE NETWORKS USING LOGICALLY BIDIRECTIONAL PERFECT SHUFFLE INTERCONNECTION PATTERN

Optical WDM (Wavelength Division Multiplexing) technology is a method of exploiting the huge bandwidth of optical fibers. Local lightwave ne tworks which use fixed wavelength transmitters and receivers can be bu ilt in a multihop fashion. In multihop local lightwave networks, packe ts arrive at their destination by hopping a number of intermediate nod es. The channel sharing schemes for multihop lightwave networks have b een proposed for efficient channel utilization, but those schemes resu lt in the degradation of network capacity and the user throughput. In this paper, we propose an improved WDM channel sharing scheme using th e logically bidirectional perfect shuffle interconnection pattern, ach ieving smaller number of average hops for transmission and better chan nel utilization efficiency. Better channel utilization efficiency is o btained without much deteriorating the network capacity and the user t hroughput. TDMA (Time Division Multiple Access) protocol can be used t o control the sharing of channels, and time delay and lost packet prob ability analysis based on TDMA is performed.