This work studies the meta distribution (MD) in a two-user partial non-orthogonal multiple access (pNOMA) network. Compared to NOMA where users fully share a resource-element, pNOMA allows sharing only a fraction $\alpha$ of the resource-element. The MD is computed via moment-matching using the first two moments where reduced integral expressions are derived. Accurate approximates are also proposed for the $b{\rm th}$ moment for mathematical tractability. We show that in terms of percentile-performance of links, pNOMA only outperforms NOMA when $\alpha$ is small. Additionally, pNOMA improves the percentile-performance of the weak-user more than the strong-user highlighting its role in improving fairness.

翻译：本文研究了双用户部分非正交多址接入(pNOMA)网络中的元分布(MD)。与用户完全共享资源单元的NOMA相比，pNOMA仅允许共享该资源单元的$\alpha$部分。元分布通过矩匹配方法计算，利用前两个矩导出简化积分表达式。为便于数学可解性，还提出了$b$阶矩的精确近似方法。结果表明，从链路百分位性能的角度看，仅当$\alpha$较小时pNOMA才优于NOMA。此外，pNOMA对弱用户百分位性能的提升程度大于强用户，凸显其在改善公平性方面的作用。