论文标题
物联网中收获设备的异质能量曲线和QoS要求：WPT-NOMA与BAC-NOMA
Harvesting Devices' Heterogeneous Energy Profiles and QoS Requirements in IoT: WPT-NOMA vs BAC-NOMA
论文作者
论文摘要
下一代物联网（IoT）具有独特的功能，IoT设备具有不同的能源配置文件和服务质量（QoS）要求。 在本文中，提出了两种能源和频谱高效的传输策略，即无线功率传输辅助非正交多重访问（WPT-NOMA）和反向散射通信辅助NOMA（BAC-NOMA），通过利用IoT的这一特征并在设备之间采用光谱和能量合作来提出。此外，对于拟议的WPT-NOMA方案，还考虑了混合连续的干扰取消（SIC）的应用，并开发了分析结果以证明WPT-NOMA可以避免中断误差层，并实现全部多样性增益。与WPT-Noma不同，BAC-NOMA患有中断概率误差地板，并且通过应用极值理论在论文中分析了该误差层的渐近行为。此外，研究了BAC-NOMA独特特征的效果，即使用一个设备的信号作为另一个设备的载体信号，并揭示了其对多样性增益的影响。还提供了模拟结果，以比较提出的策略的性能并验证开发的分析结果。
The next generation Internet of Things (IoT) exhibits a unique feature that IoT devices have different energy profiles and quality of service (QoS) requirements. In this paper, two energy and spectrally efficient transmission strategies, namely wireless power transfer assisted non-orthogonal multiple access (WPT-NOMA) and backscatter communication assisted NOMA (BAC-NOMA), are proposed by utilizing this feature of IoT and employing spectrum and energy cooperation among the devices. Furthermore, for the proposed WPT-NOMA scheme, the application of hybrid successive interference cancelation (SIC) is also considered, and analytical results are developed to demonstrate that WPT-NOMA can avoid outage probability error floors and realize the full diversity gain. Unlike WPT-NOMA, BAC-NOMA suffers from an outage probability error floor, and the asymptotic behaviour of this error floor is analyzed in the paper by applying the extreme value theory. In addition, the effect of a unique feature of BAC-NOMA, i.e., employing one device's signal as the carrier signal for another device, is studied, and its impact on the diversity gain is revealed. Simulation results are also provided to compare the performance of the proposed strategies and verify the developed analytical results.
