Cooperative Non-Orthogonal Multiple Access in 5G Systems
Cooperative Non-Orthogonal Multiple Access in 5G Systems
复制标题
DOI：
10.1109/lcomm.2015.2441064
复制
发表时间：
2015-08-01
期刊：
影响因子：
--
通讯作者：
Poor, H. Vincent
中科院分区：
文献类型：
--
作者：
Ding, Zhiguo;Peng, Mugen;Poor, H. Vincent
非正交多址 (NOMA) 作为 5G 系统的有希望的候选者最近受到了相当多的关注。 NOMA 的一个关键特性是，信道条件较好的用户可以先验了解其他用户的消息。这封信充分利用了这些先验知识，提出了一种合作 NOMA 方案。分析了该协作NOMA方案实现的中断概率和分集阶数，并提出了一种基于用户配对的方法来降低系统复杂度。
Non-orthogonal multiple access (NOMA) has received considerable recent attention as a promising candidate for 5G systems. A key feature of NOMA is that users with better channel conditions have prior information about the messages of other users. This prior knowledge is fully exploited in this letter, where a cooperative NOMA scheme is proposed. The outage probability and diversity order achieved by this cooperative NOMA scheme are analyzed, and an approach based on user pairing is also proposed to reduce system complexity.