This paper investigates the joint effects of in-phase and quadrature-phase imbalance (IQI) and imperfect successive interference cancellation (ipSIC) on the cooperative Internet of Things (IoT) nonorthogonal multiple access (NOMA) networks where the Nakagami-m fading channel is taken into account. The closed-form expressions of outage probability for the far and near IoT devices are derived to evaluate the outage behaviors. For deeper insights of the performance of the considered system, the approximate outage probability and diversity order in high signal-to-noise ratio (SNR) regime are obtained. In addition, we also analyze the throughput and energy efficiency to characterize the performance of the considered system. The simulation results demonstrate that, compared with IQI, ipSIC has a greater impact on the outage performance for the near-IoT-device of the considered system. Furthermore, we also find that the outage probabilities of IoT devices can be minimized by selecting a specific power allocation scheme.

中文翻译：

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IQI受损的合作NOMA在支持5G的物联网中的性能分析

本文研究的共同作用相和物联网（IOT）合作因特网上的正交相位失衡（IQI）和不完善的连续干扰消除（ipSIC）非正交多址（NOMA）网络，其中Nakagami-米考虑了衰落信道。推导了远距离物联网设备和近距离物联网设备的中断概率的封闭式表达式，以评估中断行为。为了更深入地了解所考虑系统的性能，获得了高信噪比（SNR）机制下的近似中断概率和分集阶数。此外，我们还分析了吞吐量和能效，以表征所考虑系统的性能。仿真结果表明，与IQI相比，ipSIC对所考虑系统的近IoT设备的中断性能具有更大的影响。此外，我们还发现，通过选择特定的电源分配方案，可以使IoT设备的停电概率最小化。