Amplify and forward relay performance in WiMAX 802.16j

WiMAX has been proven to be a better alternative to the DSL and cable broadband services and also supports point to multipoint and mesh networks. Furthermore, the WiMAX 802.16j Network has been proposed by the relay task group to improve coverage, throughput and cost effectiveness.;The WiMAX relay task group has proposed different relaying techniques using various types of relays mainly 'Decode and Forward' and 'Amplify and Forward'. In this thesis, the performance of the two hop relay network has been evaluated using the 'Amplify and Forward Relay' due to the ability of an 'Amplify and forward' relay to provide better performance in short distances with reduction in cost. The effects of placement of the relay station on the performance of the network for different applications were also studied. The two hop network with an "Amplify and forward" relay was successfully evaluated to provide better link quality to users.