AN IMPROVED EXPRESSNET

Abstract

Expressnet is a local area communication network having an inbound channel and an outbound channel to which the stations are connected. Stations transmit on the outbound channel and receive on the inbound channel. The inbound channel is connected to the outbound channel so that all signals transmitted on the outbound channel are duplicated on the inbound channel, thus achieving broadcast communication among the stations. The need of today's local area network consisted of data communications such as computer-to-computer data traffic, terminal-to-computer data traffic and the like. It is the desire to integrate voice communication on local data networks because voice in an office communication application just as computer data, fascimile etc. This dissertation is concerned with the study and simulation oI Expressnet. To bring out the superior performance of Expressnet over other broadcast bus system, a review of existing broadcast bus systems and their underlying access protocols is carried out. Expressnet is suitable for the integration of voice and data. A detailed study of Expressnet and its access protocols is carried out. Finally to increase the throughput-delay performance of the existing Expressnet, a new model of Expressnet has been proposed and analyzed through simulation.