ERWPM-MANET: Evaluation of Radio Wave Propagation Models in Mobile Ad-hoc Network by using Distance Scenario

Institute of Computer Sciences and IT (ICS/IT), The University of Agriculture Peshawar 25000, Pakistan

Abstract: Mobile Ad-hoc Networks (MANETs) are a kind of networks comprised of nodes which are mobile from place to place in nature, hence the name is MANET. Being an ad-hoc network, it does not need a centralised control infrastructure. Along with the mobile nodes, these type of networks also deals with the radio propagation models in which the nodes communicate with one another using different propagation models. These propagation models have their own kind of communication scenarios in which direct Line of Sight (LoS), Non-Line of Sight (N-LoS), two ray ground reflection etc. By communicating with one another, these propagation models undergo issues like going away from each other in which the distance increases and it directly affects their efficiency. In this paper, two-ray ground and free-space radio waves propagation models have been taken into consideration to check the distance-based scenarios in different distance ranges. With the help of Ad-hoc On-demand Distance Vector (AODV) routing scheme the simulations have been performed in NS-2 by taking the performance evaluation metrics that are average throughput, average latency and average packet drop. The simulations revealed that distance has a direct impact on the performance of propagation models. It has been concluded that two ray ground gives the best performance in contrast with the free space propagation model. The main reason is that two ray ground uses the two-way ground reflection in which it communicates via LOS and N-LOS. The simulations results have revealed that the proposed radio wave propagation models have a huge impact with the distance-based scenario to evaluate the performance of AODV routing scheme.

Keywords: MANET, AODV, Two Ray Ground Model, Free Space Model, Distance Based Performance.

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Altaf HUSSAIN, ERWPM-MANET: Evaluation of Radio Wave Propagation Models in Mobile Ad-hoc Network by using Distance Scenario, Romanian Journal of Information Technology and Automatic Control, ISSN 1220-1758, vol. 32(2), pp. 35-50, 2022.