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
来源：
2005 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-4: WCNC 2005: BROADBAND WIRELESS FOR THE MASSES READY FOR TAKE-OFF. | 2005年
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D O I：
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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.
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页码：1206 / 1212
页数：7
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