Study of the resource allocation in MIMO/OFDM systems based users' QoS

A low complexity,adaptive resource allocation scheme for the multiuser MIMO/OFDM system is proposed,which included adaptive subcarrier allocation,power allocation and beamforming.To minimize the total transmit power,and ensure the users' QoS requirements at the same time are the research intent.Based on the theory about random matrix and order statistics,a though and exact performance analysis is carried out.Mathematic analysis and simulation examinations all show that the proposed scheme can efficiently improve the system's performance and guarantee the users' QoS.The analytical results are verified by simulation in the end.