International Journal of Scientific Engineering and Applied Science (IJSEAS)
The wireless ad hoc networks have no proper fixed topology. These networks therefore face multiple challenges regarding medium access scheme; routing and multicasting; transport layer protocol; pricing scheme; quality of service provisioning; security; energy management; scalability, etc. To resolve the routing problem, many protocols have been developed for ad hoc networks which are table driven protocols, reactive protocols and hybrid protocols. Every protocol has its own pros and cons. This paper presents an implemented comparison of three ad hoc routing protocols i.e. AODV, OLSR and DSR on the basis of parameters: media access delay, network load, retransmission attempts and throughput in the OPNET modeler simulation tool.