A Resource Allocation Algorithm Based on goodput in OFDMA System

Resource allocation is an important issue in resource scheduling of OFDMA system.Aiming at the actual error problems in obtaining channel information of downlink,a resource allocation algorithm based on goodput is proposed.This paper focuses on the allocation of power and data rate in among the users.Some known algorithms are always based on ideal channel information,and the allocated rate is not supported by actual channel condition,thus causing the outage events.The algorithm considers the errors of channel estimation,and the resource allocation is thus optimized on goodput.Computer simulation shows that the proposed algorithm could acquire fair multi-user diversity gain and goodput performance.