On the Performance of NOMA-Based Cooperative Relaying Systems Over Rician Fading Channels
On the Performance of NOMA-Based Cooperative Relaying Systems Over Rician Fading Channels
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基于 NOMA 的协作中继系统在莱斯衰落信道上的性能研究
DOI：
10.1109/tvt.2017.2728608
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发表时间：
2017-12-01
影响因子：
6.8
通讯作者：
Hao, Mo
中科院分区：
文献类型：
--
作者：
Jiao, Ruicheng;Dai, Linglong;Hao, Mo
非正交多址（NOMA）是第五代（5G）无线通信的一项有前途的技术。由于信道条件良好的用户可以充当中继，通过使用连续干扰消除（SIC）来增强系统性能，NOMA 和协作中继的集成最近引起了越来越多的兴趣。本文研究了基于 NOMA 的协作中继系统，并开发了一个分析框架来评估其性能。具体来说，研究了 NOMA 在莱斯衰落信道上的性能，并导出了平均可实现速率的精确表达式。此外，我们还提出了一种使用高斯-切比雪夫积分计算可实现速率的近似方法。数值结果证实我们得出的分析结果与蒙特卡罗模拟非常吻合。
Non-orthogonal multiple access (NOMA) is a promising technique for the fifth generation (5G) wireless communications. As users with good channel conditions can serve as relays to enhance the system performance by using successive interference cancellation (SIC), the integration of NOMA and cooperative relaying has recently attracted increasing interests. In this paper, a NOMA-based cooperative relaying system is studied, and an analytical framework is developed to evaluate its performance. Specifically, the performance of NOMA over Rician fading channels is studied, and the exact expression of the average achievable rate is derived. Moreover, we also propose an approximation method to calculate the achievable rate by using the Gauss–Chebyshev Integration. Numerical results confirm that our derived analytical results match well with the Monte Carlo simulations.