On the Impact of Phase Shifting Designs on IRS-NOMA
On the Impact of Phase Shifting Designs on IRS-NOMA
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DOI：
10.1109/lwc.2020.2991116
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发表时间：
2020-10-01
影响因子：
6.3
通讯作者：
Poor, H. Vincent
中科院分区：
文献类型：
--
作者：
Ding, Zhiguo;Schober, Robert;Poor, H. Vincent
研究了相干相移和随机离散相移两种相移设计对智能反射面（IRS）辅助非正交多址（NOMA）系统性能的影响。分析和仿真结果表明，这两种设计实现了不同的可靠性和复杂性之间的权衡。为了进一步提高随机移相设计的接收可靠性，本文还提出了一种低复杂度的选相方案。
In this letter, the impact of two phase shifting designs, namely coherent phase shifting and random discrete phase shifting, on the performance of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) is studied. Analytical and simulation results are provided to show that the two designs achieve different tradeoffs between reliability and complexity. To further improve the reception reliability of the random phase shifting design, a low-complexity phase selection scheme is also proposed in this letter.