Joint subcarrier and power allocation in uplink OFDMA systems
Joint subcarrier and power allocation in uplink OFDMA systems
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DOI：
10.1109/lcomm.2005.1437359
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发表时间：
2005-08
期刊：
影响因子：
--
通讯作者：
Keunyoung Kim;Youngnam Han;Seong-Lyun Kim
中科院分区：
文献类型：
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作者：
Keunyoung Kim;Youngnam Han;Seong-Lyun Kim
在这封信中，我们专注于联合子载波和功率分配在OFDMA系统的上行链路。我们的目标是最大化上行链路的速率和容量。为此，我们制定了一个优化问题的子载波和功率约束，并得出必要条件的最优性，从中我们得到联合子载波和功率分配算法。仿真结果表明，我们提出的方案提高了系统容量，提供几乎接近最优的解决方案，计算负担低。
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.