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<p>Underlay networks (UNs) with nonorthogonal multiple access (NOMA) and energy harvesting (UNNoEH) concatenate cutting-edge wireless technologies including NOMA, energy harvesting (EH), cognitive radio with expectation of high energy efficiency and total throughput. Nonetheless, these networks face practical challenges such as nonlinear EH, primary interference, and channel impairments (fading, path-loss, shadowing). This paper quickly analyzes the performance of UNNoEH considering these challenges by proposing mathematical formulas of key performance metrics. The results show that these challenges negatively impact system performance. Nevertheless, by carefully choosing system parameters, the performance can be improved, optimized, and even complete outage avoidance. Additionally, the findings demonstrate UNNoEH’s superiority to UNs with traditional orthogonal multiple access and EH.</p>

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Underlay networks with nonorthogonal multiple access and energy harvesting: performance analysis

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • Toi Le-Thanh,
  • Cuong Tran-Minh,
  • Khuong Ho-Van

摘要

Underlay networks (UNs) with nonorthogonal multiple access (NOMA) and energy harvesting (UNNoEH) concatenate cutting-edge wireless technologies including NOMA, energy harvesting (EH), cognitive radio with expectation of high energy efficiency and total throughput. Nonetheless, these networks face practical challenges such as nonlinear EH, primary interference, and channel impairments (fading, path-loss, shadowing). This paper quickly analyzes the performance of UNNoEH considering these challenges by proposing mathematical formulas of key performance metrics. The results show that these challenges negatively impact system performance. Nevertheless, by carefully choosing system parameters, the performance can be improved, optimized, and even complete outage avoidance. Additionally, the findings demonstrate UNNoEH’s superiority to UNs with traditional orthogonal multiple access and EH.