Non-orthogonal multiple access (NOMA) along with wireless power transfer have recently been adapted to cooperative communications for 5G and beyond wireless networks. This paper investigates NOMA based cooperative relaying wireless-powered networks (CRWPNs) where, decode-and-forward (DF) relaying and successive interference cancellation are both employed at a wireless-powered intermediate node. For simultaneous wireless information and power transfer (SWIPT), power-splitting relaying (PSR) and time switching-based relaying (TSR) protocols are considered in the NOMA based CRWPN. As a result, the combination of cooperative relaying power domain NOMA network and PSR and TSR protocols is proposed in this paper. The outage performance and ergodic rate of both protocols are analysed for evaluation of the impacts of energy harvesting (EH) time, EH efficiency, power splitting ratio, source data rate, and the distance between the nodes. In addition, two delay limited transmission (DLT) and delay tolerant transmission (DTT) modes are considered in this network model to investigate the throughput and ergodic rate of the system according to the source transmission rate. It is shown that the cooperative relaying NOMA (CRNOMA) scheme achieves a lower outage probability when compared to the conventional orthogonal multiple access (OMA) schemes. Additionally, the PSR outperforms the TSR in both low and high signal-to-noise ratio ($SNR$) regions in terms of throughput, ergodic rate and energy efficiency. For instance, the outage probability of CRNOMA for both PSR and TSR in $SNR$ range of from -10 dB to +20 dB (i.e. a low $SNR$ region) decreases gradually but not linearly. However, in $SNR$ range of from +20 dB to +40 dB (i.e. a high $SNR$ region), the outage probability of CRNOMA for both PSR and TSR decreases quickly. Furthermore, the energy efficiency is shown to be considerably enhanced with the employment of EH for CRNOMA. Finally, the impacts of the distance between the nodes on the performance and a comparison between two scenarios of having and without having direct links are evaluated.

非正交多路访问（NOMA）以及无线功率传输最近已适应于5G和无线网络以外的协作通信。本文研究了基于NOMA的协作中继无线供电网络（CRWPN），其中在无线供电的中间节点上都采用了解码转发（DF）中继和连续干扰消除技术。对于同时进行的无线信息和功率传输（SWIPT），在基于NOMA的CRWPN中考虑了功率分配中继（PSR）和基于时间切换的中继（TSR）协议。因此，本文提出了协作中继功率域NOMA网络与PSR和TSR协议的结合。分析了两种协议的中断性能和遍历率，以评估能量收集（EH）时间的影响，EH效率，功率分配比，源数据速率以及节点之间的距离。此外，在此网络模型中考虑了两种延迟限制传输（DLT）模式和延迟容忍传输（DTT）模式，以根据源传输速率来研究系统的吞吐量和遍历速率。结果表明，与传统的正交多址访问（OMA）方案相比，协作中继NOMA（CRNOMA）方案实现了更低的中断概率。此外，无论是低信噪比还是高信噪比，PSR均优于TSR（在该网络模型中考虑了两种延迟限制传输（DLT）模式和延迟容忍传输（DTT）模式，以根据源传输速率研究系统的吞吐量和遍历速率。结果表明，与传统的正交多址访问（OMA）方案相比，协作中继NOMA（CRNOMA）方案实现了更低的中断概率。此外，无论是低信噪比还是高信噪比，PSR均优于TSR（在该网络模型中考虑了两种延迟限制传输（DLT）模式和延迟容忍传输（DTT）模式，以根据源传输速率研究系统的吞吐量和遍历速率。结果表明，与传统的正交多址访问（OMA）方案相比，协作中继NOMA（CRNOMA）方案实现了更低的中断概率。此外，无论是低信噪比还是高信噪比，PSR均优于TSR（$\mathrm{小号}ñ\mathrm{[R}$）区域的吞吐量，遍历速度和能效。例如，在CSR中，PSR和TSR的CRNOMA中断概率$\mathrm{小号}ñ\mathrm{[R}$ 范围从-10 dB到+20 dB（即低 $\mathrm{小号}ñ\mathrm{[R}$区域）逐渐减少，但不是线性减少。但是，在$\mathrm{小号}ñ\mathrm{[R}$ 从+20 dB到+40 dB（即高 $\mathrm{小号}ñ\mathrm{[R}$区域），PSNO和TSR的CRNOMA中断概率迅速降低。此外，通过在CRNOMA中使用EH，能源效率显着提高。最后，评估节点之间的距离对性能的影响以及具有和不具有直接链接的两种情况之间的比较。