A Comparative Analysis of Different QOS Strategies in OFDM Wireless Network

Data strong networks have appeared as a new call in the field of wireless networks. To facilitate data users with the uprising need of high data transfer rate is a prime concern to the network provider community. Quality of service (Qos) in terms of network is to provide network resources and services to users so that it satisfies their needs and manages the network resources efficiently altogether. In this paper, we have studied different Qos approaches which have been applied in the past for achieving QoS for various kinds of applications. The kind of network we are using for communication changes the QoS dynamics substantially as providing Qos in a wireless network is way more intriguing, for many complexities being involved in a wireless channel. This paper surveys various Qos strategies and methods that have been implemented in past. To achieve Qos several scheduling and resource allocation schemes are devised by researchers as Network resources must be distributed in such a manner that bandwidth, power allocation, energy efficiency, and throughput is optimized. These QoS approaches have been analysed and compared on account of their methodology, advantages and disadvantages. The performance evaluation is done on all the strategies over some significant key metrics.