Today, Due to mobility wireless network have a heavy demand especially for wireless Ad-Hoc network. In Ad-Hoc network a group of wireless mobile nodes cooperate with each other by routing of packets. So it is necessary to design a wireless network which gives the best performance by suitable protocol selection and path routing. The selection of protocol should be suitable in terms of data integrity as well as data delivery. Hence performance evaluation of protocol is a major issue before selection of a routing protocol. In this paper our aim is to analyse the performance matrices including end to end delay, jitter, packet loss and packet delivery fraction of multi hop network by simulation. Performance evaluation of wireless ad hoc network routing protocols specially Ad-hoc On Demand Distance Vector (AODV), Optimized Link State Routing (OLSR), Destination Sequenced Distance Vector (DSDV) have been completed using NS-3 Simulator. After simulation we have found that OLSR routing protocol gives the best result comparison to AODV and DSDV in large and dense network.

In this paper, we use three traffic generators namely exponential, Pareto and CBR (Constant Bit Rate) over an ad hoc network and analyze the behavior of routing protocols. Moreover, we take two parameters offered load and packet size which are important to determine the nature of ad hoc network routing protocols in the different traffic patterns. Further, simulation shows that there is an optimal value for which value of throughput and packet delivery ratio are optimal.

In this paper, we simulate three ad hoc network routing protocols namely DSDV(Destination Sequenced Distance Vector), DSR(Dynamic Source Routing) and AODV(Ad Hoc On Demand Distance Vector) and simulation carries out using network simulator version 2. Furthermore, end-to-end delay, normalized routing load, packet delivery ratio, throughput and jitter are evaluated as function of number of nodes and pause time.