Performance Analysis of MANET (WLAN) Using Different Routing Protocols in Multi service Environments-An Quantitative Study

----------------------------------------------------------------------ABSTRACT---------------------------------------------------------------A mobile ad-hoc network is a network (MANET) of wireless mobile nodes (MNs) that communicate with each other without centralized control or established infrastructure. Routing protocols are divided into Proactive and Reactive.Pro-active is a table–driven protocols. The proactive routing protocols use linkstate routing algorithm which frequently flood the link information about its neighbors. Reactive or on-demand routing protocols create routes when they are needed by the source host and these routes are maintained while they are needed. This paper proposes a solution for performance enhancement of VoIP and HTTP in Ad-hoc WLANs. This paper compares the performance of VoIP and HTTP over different IEEE standards and draws a conclusion based on performance of the network over different QoS parameters. Later the suitability of different routing protocols like AODV, DSR, OLSR and GRP for VoIP and HTTP traffic is compared and OLSR is found to have highest throughput with least delay as compared to other protocols. Thus we observed that, the throughput increase of around 80% over the existing routing standard and enormous decrease in end to end delay.