Non-orthogonal multiple access (NOMA) has been identified as one of the promising technologies to enhance the spectral efficiency and throughput for the fifth generation (5G) and beyond 5G cellular networks. Alternatively, Coordinated multi-point transmission and reception (CoMP) improves the cell edge users' coverage. Thus, CoMP and NOMA can be used together to improve the overall coverage and throughput of the users. However, user grouping and pairing for CoMP-NOMA-based cellular networks have not been suitably studied in the existing literature. Motivated by this, we propose a user grouping and pairing scheme for a CoMP-NOMA-based system. Detailed numerical results are presented comparing the proposed scheme with the purely OMA-based benchmark system, NOMA only, and CoMP only systems. We show through simulation results that the proposed scheme offers a trade-off between throughput and coverage as compared to the existing NOMA or CoMP based system.
翻译：非横向多重存取(NOMA)已被确定为提高第五代(5G)及以后5G蜂窝网络光谱效率和吞吐量的有希望的技术之一,或者,协调多点传输和接收(COMP)提高了细胞边缘用户的覆盖面,因此,可同时使用COMP和NOMA来提高用户的总体覆盖面和吞吐量,然而,现有文献并未适当研究基于COMP-NOMA的蜂窝网络的用户组合和配对。为此,我们提议了一个基于COMP-NOMA系统的用户组合和配对计划。详细的数字结果将拟议的计划与纯基于OMA的基准系统(仅NOMA)和仅基于COMP的系统(COMP)进行比较。我们通过模拟结果显示,拟议的计划提供了与现有的NOMA或基于COMP的系统相比,通过量和覆盖面之间的交易。
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