计算机科学
诺玛
电信线路
网络数据包
块错误率
计算机网络
收发机
水准点(测量)
光谱效率
信噪比(成像)
延迟(音频)
频道(广播)
无线
电信
大地测量学
地理
作者
Chunli Xia,Zhongwu Xiang,Binbin Su,Hongbo Liu,Jin Meng,Gaofeng Pan
出处
期刊:IEEE Internet of Things Journal
[Institute of Electrical and Electronics Engineers]
日期:2024-01-15
卷期号:11 (2): 2990-3002
被引量:3
标识
DOI:10.1109/jiot.2023.3294257
摘要
To address the stringent demands of next-generation networks for massive connectivity, ultra-low latency, and ultrahigh spectral efficiency, the win-win integration of reconfigurable intelligent surface (RIS) and nonorthogonal multiple access (NOMA) is considered as a promising solution.In this paper, we investigate a downlink RIS-empowered NOMA system with short packet communications (SPC) in the presence of hardware impairments at the transceiver nodes.To characterize the performance of the proposed network, the approximate and asymptotic closed-form expressions of average block error rate (BLER) at far and near users are derived and analyzed.Based on asymptotic average BLER in high signal-to-noise ratio regime, the diversity order, minimum blocklength, and optimal power allocation are examined.RIS exhibits an improvement in diversity order and minimum blocklength.The achieved results show that users with poorer channel conditions have less sensitivity to hardware impairments whether for near users or RIS-assisted far users.Furthermore, our results manifest the benefits of NOMA and RIS in SPC over the benchmark orthogonal multiple access (OMA) scheme.
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