The network on chip (NoC) is used as a solution for the communication p roblems in a complex system on chip (SoC) design. To further enhance performance s

the NoC architectures

a high level modeling and an evaluat ion method based on OPNET are proposed to analyze their performances on differ ent injectio n rates and traffic patterns. Simulation results for general NoC in terms of the average latency and the throughput are analyzed and used as a guideline to make appropriate choices for a given application. Finally

a MPEG4 decoder is mapped on different NoC architectures. Results prove the effectiveness of the evalua tion method.