Performance Analysis of IQI Impaired Cooperative NOMA for 5G-Enabled Internet of Things

被引：5

作者：

Guo, Hui ^{[1
]}

Guo, Xuejiao ^{[1
]}

Deng, Chao ^{[1
]}

Zhao, Shangqing ^{[2
]}

机构：

[1] Henan Polytech Univ, Sch Phys & Elect Informat Engn, Jiaozuo 454000, Henan, Peoples R China

[2] Univ S Florida, Dept Elect Engn, Tampa, FL 33620 USA

来源：

WIRELESS COMMUNICATIONS & MOBILE COMPUTING | 2020年 / 2020卷

基金：

中国国家自然科学基金;

关键词：

NONORTHOGONAL-MULTIPLE-ACCESS; I/Q IMBALANCE; HARDWARE IMPAIRMENTS; COGNITIVE RADIO; SYSTEMS; CHANNEL; OPTIMIZATION; PROBABILITY; NETWORKS;

D O I：

10.1155/2020/3812826

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页数：12

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