Wi-Fi 802.11g VS Wi-Fi 802.11n: Comparative study from a QOS Point of View

The main challenge in the development of future wireless communication systems is to provide users with a wide range of services (allow the user access to multimedia information efficiently) across different radio access technologies. This paper presents some comparison between Wi-Fi 802.11 g In term of throughput, delay and load using opnet simulator. This paper gives in details a description for each technique and the frequencies used and the extent of coverage and its advantages and disadvantages