Opportunistic downlink scheduling for multiuser OFDM systems

被引:0
|
作者
Zhang, Z [1 ]
He, Y [1 ]
Chong, EKP [1 ]
机构
[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA
关键词
D O I
暂无
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
We consider the problem of downlink scheduling for multiuser OFDM (Orthogonal Frequency Division Multiplexing) systems. We derive optimal scheduling policies under three QoS/fairness constraints-temporal fairness, utilitarian fairness, and minimum-performance guarantees. To calculate these optimal policies, we interpret the problem as a maximal bipartite matching problem. To solve this problem, we apply the modified Hungarian algorithm and a practical suboptimal algorithm. The simulation results show that our schemes achieve significant improvement in system performance compared with a non-opportunistic scheme.
引用
收藏
页码:1206 / 1212
页数:7
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