Uplink Nonorthogonal Multiple Access in 5G Systems
Uplink Nonorthogonal Multiple Access in 5G Systems
复制标题
5G 系统中的上行链路非正交多址接入
DOI：
10.1109/lcomm.2016.2521374
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发表时间：
2016-03-01
期刊：
影响因子：
--
通讯作者：
Liu, Yang
中科院分区：
文献类型：
--
作者：
Zhang, Ningbo;Wang, Jing;Liu, Yang
为了在上行非正交多址接入（NOMA）中实现不同的到达功率，提出了一种上行功率控制方案。所提出的方案使得演进节点B（eNB）在功率域中区分复用的用户设备（UE）。对该方案的中断性能和可达和数据速率进行了理论分析，推导出了中断概率和可达和数据速率的闭式表达式。通过仿真，我们发现中断性能与功率回退步长和目标数据速率有关。与传统的正交多址（OMA）方案相比，所提出的NOMA方案显着提高了可达到的和数据速率。
In order to achieve diverse arrived power in uplink nonorthogonal multiple access (NOMA), an uplink power control scheme is proposed. The proposed scheme makes evolved NodeB (eNB) distinguish the multiplexing user equipments (UEs) in power domain. The outage performance and the achievable sum data rate for the proposed scheme are theoretically analyzed, and the closed-form expressions of outage probability and achievable sum data rate are derived. By simulation, we show that the outage performances are related to both the power backoff step and the target data rate. Compared with the traditional orthogonal multiple access (OMA) scheme, the proposed NOMA scheme significantly improves the achievable sum data rate.