Research On Radio Resource Allocation Algorithm In WiMAX OFDMA Systems

Based on the research of the present development and the demand of radio resource management, the allocation algorithm in radio resource management is researched. Based on the utility function and game theory, two improved algorithm are researched in the thesis.This thesis first introduces the OFDMA system theory and system model, and discusses the wireless resource allocation mechanism in WiMAX OFDMA system. Then on the basis of the existing algorithms, combined with the utility function and game theory of microeconomics, two improved algorithms are researched. Through WiMAX request-grant scheduling mechanism and a simple admission control, they maximize the total system utility, based on the combination of QoS mechanisms and utility function and game theory.Finally, this thesis introduces a simulation by OPNET and MATLAB, and analyses the performance of the researched algorithms, including throughput, delay and fair comparison. The result of simulation show that the algorithms can improve system throughput, reduced latency, and the fairness of the user data stream has also been assurance.