The analysis of outage performance in a Non-Orthogonal Multiple Access (NOMA) based network is conducted for a hybrid model that combines an IRS with a decode-forward relay. The use of an IRS-assisted relay network is particularly significant in environments with deep fading. The outage performance of each user in different ordered NOMA configurations has been evaluated, taking into account different numbers of IRS elements. The optimal number of users that can be accommodated by a source using NOMA for a specific threshold has been identified. The required number of active reflecting elements has been estimated to achieve a target SINR for a given order of NOMA. Additionally, a closed-form expression and its asymptotic expressions have also been derived for the outage probability of all users. The analytical results have been validated via Monte Carlo simulations.

基于非正交多址 (NOMA) 的网络中的中断性能分析是针对将 IRS 与解码转发中继相结合的混合模型进行的。在深度衰落的环境中，使用 IRS 辅助中继网络尤其重要。考虑到不同数量的 IRS 元件，对不同有序 NOMA 配置中每个用户的中断性能进行了评估。已确定使用 NOMA 达到特定阈值的源可以容纳的最佳用户数量。已估计了为实现给定 NOMA 阶数的目标 SINR 所需的有源反射元件数量。此外，还导出了所有用户的中断概率的闭式表达式及其渐近表达式。分析结果已通过蒙特卡罗模拟得到验证。