.png){kind=icon}
返回
Multi-RIS-Aided Wireless Systems: Statistical Characterization and Performance Analysis
.png){kind=icon}
OA
AI
DOI：10.1109/TCOMM.2021.3117599.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
In this paper, we study the statistical characterization and modeling of distributed multi-reconfigurable intelligent surface (RIS)-aided wireless systems. Specifically, we consider a practical system model where the RISs with different geometric sizes are distributively deployed, and wireless channels associated to different RISs are assumed to be independent but not identically distributed (i.n.i.d.). We propose two purpose-oriented multi-RIS-aided schemes, namely, the exhaustive RIS-aided (ERA) and opportunistic RIS-aided (ORA) schemes. A mathematical framework, which relies on the method of moments, is proposed to statistically characterize the end-to-end (e2e) channels of these schemes. It is shown that either a Gamma distribution or a Log-Normal distribution can be used to approximate the distribution of the magnitude of the e2e channel coefficients in both schemes. With these findings, we evaluate the performance of the two schemes in terms of outage probability (OP) and ergodic capacity (EC), where tight approximate closed-form expressions for the OP and EC are derived. Representative results show that the ERA scheme outperforms the ORA scheme in terms of OP and EC. In addition, under i.n.i.d. fading channels, the reflecting element settings and location settings of RISs have a significant impact on the system performance of both the ERA or ORA schemes.
Keyword:
Wireless communication
Analytical models
Signal to noise ratio
Rayleigh channels
Performance analysis
Log-normal distribution
Gamma distribution
Reconfigurable intelligent surfaces (RIS)
multi-RIS
Gamma distribution
Log-Normal distribution
method of moments
ergodic capacity
outage probability
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
机构
引用论文
Performance Analysis of Reconfigurable Intelligent Surface-Assisted Wireless Systems and Comparison With Relaying.png)
IEEE ACCESSOAAI
IEEE ACCESSIF3.6
OAAI分享收藏分享收藏Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead由可重构智能表面支持的智能无线电环境: 工作原理、研究现状和未来之路
OAAI
OAAI分享收藏Reconfigurable Intelligent Surfaces for Energy Efficiency in Wireless Communication无线通信能效的可重构智能表面OAAI
OAAI分享收藏Cerebrospinal fluid norepinephrine, 3-methoxy-4-hydroxyphenylglycol and neuropeptide Y levels in Parkinson's disease, multiple system atrophy and dementia of the Alzheimer type帕金森氏病，多系统萎缩和阿尔茨海默氏型痴呆中的脑脊液去甲肾上腺素，3-甲氧基-4-羟基苯基乙二醇和神经肽Y水平
PREAI
分享收藏
查看更多内容