The densification of mobile networks should enable the fifth generation (5G) mobile networks to cope with the ever increasing demand for higher rate traffic, reduced latency, and improved reliability. The large scale deployment of small cells and distributed antenna systems in heterogeneous environments will require more elaborate interference mitigating techniques to increase spectral efficiency and to help unlock the expected performance leaps from the new network topologies. Coordinated multi-point (CoMP) is the most advanced framework for interference management enabling the cooperation between base stations to mitigate inter-cell interference and boost cell-edge user performance. In this paper, we study the combination of CoMP with mutual SIC, an interference cancellation technique based on power-domain non-orthogonal multiple access (NOMA) that enables multiplexed users to simultaneously cancel their corresponding interfering signals. A highly efficient inter-cell interference cancellation scheme is then devised, that can encompass several deployment configurations and coordination techniques. The obtained results prove the superiority of this approach compared to conventional NOMA-CoMP systems.

中文翻译：

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NOMA 中用于提高 CoMP 系统频谱效率的相互连续干扰消除策略

移动网络的密集化应该使第五代 (5G) 移动网络能够应对对更高速率流量、减少延迟和提高可靠性的不断增长的需求。在异构环境中大规模部署小型蜂窝和分布式天线系统将需要更精细的干扰缓解技术，以提高频谱效率并帮助解锁新网络拓扑的预期性能飞跃。协调多点 (CoMP) 是最先进的干扰管理框架，支持基站之间的合作，以减轻小区间干扰并提高小区边缘用户性能。在本文中，我们研究了 CoMP 与相互 SIC 的结合，一种基于功率域非正交多址 (NOMA) 的干扰消除技术，可使复用用户同时消除其相应的干扰信号。然后设计了一种高效的小区间干扰消除方案，该方案可以包含多种部署配置和协调技术。与传统的 NOMA-CoMP 系统相比，获得的结果证明了这种方法的优越性。