Adaptive Resource Allocation with Adaptive Beamforming for MIMO-OFDMA System with a Priority User

摘要：

In this paper, we propose a new resource allocation scheme for MIMO-OFDMA systems with a priority user. With the goal of minimizing the total transmission power and exploiting spatial diversity and multiuser diversity efficiently, the proposed algorithm firstly allocates the subcarrier to the priority user, and it selects the N relatively largest eigenvalues of all subcarriers and allocates the best subcarrier to the priority user adaptively until its data rate is fulfilled. Then the remaining subcarriers are dynamically allocated to the other users without considering their Qos requirements. Finally, the proposed algorithm reallocates some subcarriers from the satisfied users to the unsatisfied users to guarantee all users Qos requirements and the additional power because of the subcarriers reallocation is also minimized. Simulation results confirm the effectiveness of the proposed algorithm.

关键词： Adaptive beam-forming MIMO OFDMA

作者: Guili Chen Lin Qi Yanhui Lu Xiaomin Mu

作者单位: College of Information Engineering, Zhengzhou University Daxue Road 75, Zhengzhou, China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）