累积分布函数
计算机科学
信噪比(成像)
信道状态信息
无线
不完美的
误码率
干扰(通信)
频道(广播)
算法
拓扑(电路)
概率密度函数
电信
数学
统计
语言学
哲学
组合数学
作者
Ping Yang,Liang Yang,Shan Jin Wang
出处
期刊:IEEE Wireless Communications Letters
[Institute of Electrical and Electronics Engineers]
日期:2022-03-01
卷期号:11 (3): 588-592
被引量:24
标识
DOI:10.1109/lwc.2021.3136930
摘要
The impact of imperfect channel state information (CSI) on a reconfigurable intelligent surface (RIS)-aided wireless system is investigated in this letter. More specifically, considering the imperfect CSI from the RIS to the destination, we develop the cumulative distribution function (CDF) of the end-to-end signal-to-interference-plus-noise ratio (SINR). Then, using the CDF, we derive the closed-form expressions of the outage probability (OP), average bit error rate (BER), and average capacity. Furthermore, we also derive the asymptotic OP, average BER, and average capacity at high signal-to-noise ratio (SNR). Simulation results show that inaccurate CSI results in zero diversity order and a floor phenomenon. Also, numerical results demonstrate that the derived closed-form expressions match the simulated results.
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