This letter studies the impact of network-coded multiple access (NCMA) on the outage performance of full-duplex cooperative non-orthogonal multiple access (NOMA). In particular, we propose a network-coded cooperative NOMA (NC-CNOMA) strategy, under which user devices utilize physical-layer network coding (PNC) to demodulate signals with greater probability. The exact analytical expression of the outage probability is derived to evaluate the performance of the proposed scheme. The provided simulation results validate our analysis and the proposed NC-CNOMA scheme outperforms the conventional cooperative NOMA with regard to outage performance.

中文翻译：

---

下行全双工网络编码协作NOMA的中断性能

这封信研究了网络编码多路访问 (NCMA) 对全双工协作非正交多路访问 (NOMA) 中断性能的影响。特别是，我们提出了一种网络编码协作 NOMA (NC-CNOMA) 策略，在该策略下，用户设备利用物理层网络编码 (PNC) 以更大的概率解调信号。推导出中断概率的精确解析表达式以评估所提出方案的性能。提供的模拟结果验证了我们的分析，并且所提出的 NC-CNOMA 方案在停电性能方面优于传统的合作 NOMA。