Impact of Various Propagation Models on Performance

Mobile Adhoc Network (MANET) routing protocols facilitates the creation of dynamic reconfigurable networks without any centralized infrastructure. Due to very limited transmission range of wireless network interfaces, multi hop networks are required by node to exchange data with other nodes in the network. In recent years, large number of protocols were developed and targeted specifically at this development. In multihop system, it is assumed that all the routes in a nodes is active and available for routing at any time during transmission. Hence many performance parameters improved as compared to single path routing as there is no need to update the routing tables periodically and hence the control traffic is reduced for entire networks. The Quality of Service depends upon various parameters. The performance of MANET depends upon certain parameters like by varying the nodes mobility, propagation model or traffic scenario. Performance of these networks can be analysed by measuring various performance parameters like Packet Delivery Ratio, End to End Delay, Instant Jitter, Throughput, Energy Consumption etc. In this work the the performance measure of three on-demand routing protocols (AODV,AOMDV,DSR ) are done by varying number of nodes and propagation models in network simulator 2.35. Simulation studies show that AOMDV performs the best when mobility is high and consume lesser energy as compared with other two protocols and at low mobiltity all the three protocols are closely matched each other.