Waterfilling-Based Proportional Fairness Scheduler for Downlink Non-Orthogonal Multiple Access
Waterfilling-Based Proportional Fairness Scheduler for Downlink Non-Orthogonal Multiple Access
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DOI：
10.1109/lwc.2017.2665470
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发表时间：
2017-04-01
影响因子：
6.3
通讯作者：
Douillard, Catherine
中科院分区：
文献类型：
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作者：
Hojeij, Marie-Rita;Nour, Charbel Abdel;Douillard, Catherine
在这封信中，提出了一种低复杂度的基于注水的功率分配(PA)技术，并将其应用于蜂窝下行链路系统中的非正交多址(NOMA)方案。提出的联合PA和调度方案的目的是通过对子带之间的发射功率进行准最优重新划分来最大化所获得的平均吞吐量，同时保证在资源分配中的高水平的公平性。大量的仿真结果表明，与采用静态功率分配的正交信令或NOMA相比，该方法同时提高了系统容量和用户公平性。
In this letter, a low-complexity waterfilling-based power allocation (PA) technique, incorporated within the proportional fairness scheduler, is proposed and applied to a non-orthogonal multiple access (NOMA) scheme in a cellular downlink system. The aim of the proposed joint PA and scheduling scheme is to maximize the achieved average throughput through a quasi-optimal repartition of the transmit power among subbands, while guaranteeing a high level of fairness in resource allocation. Extensive simulation results show that the proposed technique enhances both system capacity and user fairness, when compared to either orthogonal signaling or NOMA with static PA.