当前位置: X-MOL 学术Wireless Netw. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Exploiting effects of imperfect-CSI and SIC, and intercell interference on the outage performance of NOMA over $$\kappa -\mu , \alpha -\kappa -\mu$$ κ - μ , α - κ - μ shadowed faded channels
Wireless Networks ( IF 3 ) Pub Date : 2022-08-07 , DOI: 10.1007/s11276-022-03085-8
Shaik Thaherbasha, Ravindra Dhuli

Non-orthogonal multiple access (NOMA) is very promising for the future wireless communication systems. The primary goal of this paper is to provide precise outage probability formulas for downlink-NOMA-based communication systems over non-homogeneous fading scenarios. The outage probability of NOMA is analyzed over \(\kappa -\mu , \alpha -\kappa -\mu\) faded and shadowed faded channels. Other fading channels result as special cases of this analysis. The closed-form expressions of outage probability are derived in a more realistic scenario considering the imperfect-channel state information (CSI) and successive interference cancellation, intra and inter-cellular interference. The derived expressions are very beneficial to asses the performance of NOMA with different fading parameters. We calculate the outage probability for two users in a Voronoi cell: near user and edge user. The obtained results are very promising, when compared with the simulated NOMA based wireless communication system. It is observed that the impact of imperfect-CSI on both users is the same. The effect of inter-cell interference is not a serious concern for the MSs which lie at the proximity of the BS. However, the performance of the MS which lies at the edge of the cell is degraded with the number of interferers.



中文翻译:

利用不完美 CSI 和 SIC 的影响,以及小区间干扰对 NOMA 在 $$\kappa -\mu 、 \alpha -\kappa -\mu$$ κ - μ 、 α - κ - μ 阴影衰减通道上的中断性能的影响

非正交多址(NOMA)对于未来的无线通信系统非常有前景。本文的主要目标是为非均匀衰落场景下基于下行链路 NOMA 的通信系统提供精确的中断概率公式。在\(\kappa -\mu , \alpha -\kappa -\mu\)上分析 NOMA 的中断概率褪色和阴影褪色通道。其他衰落信道是这种分析的特殊情况。考虑到不完善的信道状态信息(CSI)和连续的干扰消除、蜂窝内和蜂窝间干扰,在更现实的场景中推导出了中断概率的封闭式表达式。导出的表达式对于评估具有不同衰落参数的 NOMA 的性能非常有益。我们计算了 Voronoi 小区中两个用户的中断概率:近用户和边缘用户。与基于模拟 NOMA 的无线通信系统相比,获得的结果非常有前景。可以观察到,不完美 CSI 对两个用户的影响是相同的。对于位于 BS 附近的 MS 来说,小区间干扰的影响并不是一个严重的问题。然而,

更新日期:2022-08-08
down
wechat
bug