  Deployment Video on Demand (VoD) over the next generation (WiMAX) has become
one of the intense interest subjects in the research these days, and is
expected to be the main revenue generators in the near future. In this paper,
the performance of Quilty of Service of video streaming (IPTV) over fixed
mobile WiMax network is investigated under different terrain environments,
namely Free Space, Outdoor to Indoor and Pedestrian. OPNET is used to
investigate the performance of VoD over WiMAX. Our findings analyzing different
network statistics such as packet lost, path loss, delay, network throughput.
