Joint subcarrier and power allocation in uplink OFDMA systems

被引：198
|
作者：
Kim, K [1 ]
Han, Y
Kim, SL
机构：
[1] Informat & Commun Univ, Sch Engn, Taejon, South Korea
[2] Yonsei Univ, Sch Elect & Elect Engn, Seoul 120749, South Korea
来源：
IEEE COMMUNICATIONS LETTERS | 2005年 / 9卷 / 06期
关键词：
OFDMA; uplink; resource allocation; waterfilling;
D O I：
10.1109/LCOMM.2005.06018
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, we focus on joint subcarrier and power allocation in the uplink of an OFDMA system. Our goal is to maximize the rate-sum capacity in the uplink. For the purpose, we formulate an optimization problem subject to subcarrier- and power constraints and draw necessary conditions for optimality, from which we derive joint subcarrier and power allocation algorithms. Simulation results show that our proposed scheme enhances the system capacity, providing almost near optimal solutions with low computational burden.
引用
收藏
页码：526 / 528
页数：3
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