Relay Selection for Cooperative NOMA
Relay Selection for Cooperative NOMA
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DOI：
10.1109/lwc.2016.2574709
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发表时间：
2016-08-01
影响因子：
6.3
通讯作者：
Poor, H. Vincent
中科院分区：
文献类型：
--
作者：
Ding, Zhiguo;Dai, Huaiyu;Poor, H. Vincent
本文研究了中继选择对协作非正交多址接入系统性能的影响。特别地，提出了一种两阶段的RS策略，分析结果表明，这种两阶段的策略可以实现最小的中断概率在所有可能的RS方案，并实现最大的分集增益。仿真结果表明，合作NOMA与这两个阶段的RS计划优于传统的最大-最小方法的基础上，也可以产生一个显着的性能增益超过正交多址。
This letter studies the impact of relay selection (RS) on the performance of cooperative non-orthogonal multiple access (NOMA). In particular, a two-stage RS strategy is proposed, and analytical results are developed to demonstrate that this two-stage strategy can achieve the minimal outage probability among all possible RS schemes, and realize the maximal diversity gain. The provided simulation results show that cooperative NOMA with this two-stage RS scheme outperforms that based on the conventional max-min approach, and can also yield a significant performance gain over orthogonal multiple access.