Performance Analysis of Non-Regenerative Massive-MIMO-NOMA Relay Systems for 5G
Performance Analysis of Non-Regenerative Massive-MIMO-NOMA Relay Systems for 5G
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DOI：
10.1109/tcomm.2017.2739728
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发表时间：
2017-08
影响因子：
8.3
通讯作者：
Di Zhang;Yuanwei Liu;Zhiguo Ding;Zhenyu Zhou;A. Nallanathan;Takuro Sato
中科院分区：
文献类型：
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作者：
Di Zhang;Yuanwei Liu;Zhiguo Ding;Zhenyu Zhou;A. Nallanathan;Takuro Sato
介绍了非再生大规模多输入多输出（MIMO）非正交多址（NOMA）中继系统。NOMA在发射机处使用叠加编码技术，在接收机处使用连续干扰消除（SIC）技术。此外，最大均方误差-SIC接收机的设计。借助确定性等效和矩阵分析工具，推导出信号干扰噪声比（SINR）的封闭表达式。为了表征所考虑的系统的性能，容量和和速率的封闭形式的表达式，进一步获得基于推导的SINR表达式。从推导的分析结果的见解表明，发射机天线数量和中继数量之间的比率是系统性能的主导因素。最后，通过蒙特卡罗模拟的数值结果验证了推导公式的正确性。仿真结果还表明：1）发射机天线、平均功率值和用户数对容量和和速率性能表现出正相关性，而中继数目对性能表现出负相关性;以及2）与传统MIMO-NOMA、中继辅助NOMA相比，组合MIMO-NOMA方案能够实现更高的容量性能，以及MIMO正交多址（OMA）方案。
The non-regenerative massive multi-input-multi-output (MIMO) non-orthogonal multiple access (NOMA) relay systems are introduced in this paper. The NOMA is invoked with a superposition coding technique at the transmitter and successive interference cancellation (SIC) technique at the receiver. In addition, a maximum mean square error-SIC receiver design is adopted. With the aid of deterministic equivalent and matrix analysis tools, a closed-form expression of the signal to interference plus noise ratio (SINR) is derived. To characterize the performance of the considered systems, closed-form expressions of the capacity and sum rate are further obtained based on the derived SINR expression. Insights from the derived analytical results demonstrate that the ratio between the transmitter antenna number and the relay number is a dominate factor of the system performance. Afterward, the correctness of the derived expressions are verified by the Monte Carlo simulations with numerical results. Simulation results also illustrate that: 1) the transmitter antenna, averaged power value, and user number display the positive correlations on the capacity and sum rate performances, whereas the relay number displays a negative correlation on the performance and 2) the combined massive-MIMO-NOMA scheme is capable of achieving higher capacity performance compared with the conventional MIMO-NOMA, relay-assisted NOMA, and massive-MIMO orthogonal multiple access (OMA) scheme.