OPNET based Performance Evaluation of MANET using IEEE 802.11a/b?

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 Proactive is a table?driven protocols. The proactive routing protocols use link- state 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 Ad-hoc WLANs. This paper compares the performance of Small size and large network over different IEEE 802.11a and IEEE 802.11b standards and draws a conclusion based on performance of the network over different QoS parameters. The different QoS parameters are delay, network load, throughput, routing traffic sent and received and hello traffic sent.