Non-orthogonal multiple access (NOMA) for future downlink radio access of 5G
Non-orthogonal multiple access (NOMA) for future downlink radio access of 5G
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DOI：
10.1109/cc.2015.7386168
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发表时间：
2015-12
影响因子：
4.1
通讯作者：
L. Anxin;Lan Yang;Xiaohang Chen;Huiling Jiang
中科院分区：
文献类型：
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作者：
L. Anxin;Lan Yang;Xiaohang Chen;Huiling Jiang
多址（MA）技术对于 5G 来说最为重要。利用功率域和先进接收器的非正交多址（NOMA）最近被认为是一种有前途的候选 MA 技术。本文提出了 NOMA 概念，旨在提高 5G 系统下行链路较低频段的频谱效率。介绍并讨论了NOMA的关键组成技术，包括多用户发射功率分配、调度算法、接收机设计以及NOMA与多天线技术的结合。 NOMA 的性能增益是通过系统级模拟和非常实际的假设来评估的。在多种配置和设置下，即使考虑到实际情况，NOMA 可实现的系统级增益也显示出良好的前景。
Multiple access (MA) technology is of most importance for 5G. Non-orthogonal multiple access (NOMA) utilizing power domain and advanced receiver has been considered as a promising candidate MA technology recently. In this paper, the NOMA concept is presented toward future enhancements of spectrum efficiency in lower frequency bands for downlink of 5G system. Key component technologies of NOMA are presented and discussed including multiuser transmission power allocation, scheduling algorithm, receiver design and combination of NOMA with multi-antenna technology. The performance gains of NOMA are evaluated by system-level simulations with very practical assumptions. Under multiple configurations and setups, the achievable system-level gains of NOMA are shown promising even when practical considerations were taken into account.