Capacity Scaling for D2D Aided Cooperative Relaying Systems Using NOMA
Capacity Scaling for D2D Aided Cooperative Relaying Systems Using NOMA
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DOI：
10.1109/lwc.2017.2752162
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发表时间：
2018-02-01
影响因子：
6.3
通讯作者：
Lee, JunHwan
中科院分区：
文献类型：
--
作者：
Kim, Jung-Bin;Lee, In-Ho;Lee, JunHwan
本文提出了一种使用非正交多址（NOMA）来提高频谱效率的设备对设备（D2D）辅助合作中继系统（CRS）。此外，提出了一种基于信噪比的功率分配策略，以实现最大的容量缩放。与常规CRS相比，采用NOMA和功率分配的D2D辅助CRS的可达率大大提高。特别是，证明了所提出的和容量缩放的信噪比为对数信噪比，而传统的和容量缩放的信噪比为（2/3）对数信噪比。
This letter proposes a device-to-device (D2D) aided cooperative relaying system (CRS) using non-orthogonal multiple access (NOMA) to enhance the spectral efficiency. In addition, a power allocation strategy is proposed to achieve the maximum capacity scaling according to signal-to-noise ratio (SNR). The proposed D2D aided CRS using NOMA with the power allocation is shown to improve the achievable rate greatly compared to conventional CRSs with and without NOMA. In particular, it is proved that the sum-capacity scaling is log SNR for the proposed one, whereas (2/3) log SNR for the conventional ones.