A Hybrid Relay and Intelligent Reflecting Surface Network and Its Ergodic Performance Analysis

被引：94
|
作者：
Abdullah, Zaid [1 ]
Chen, Gaojie [1 ]
Lambotharan, Sangarapillai [2 ]
Chambers, Jonathon A. [1 ]
机构：
[1] Univ Leicester, Sch Engn, Leicester LE1 7RU, Leics, England
[2] Loughborough Univ, Wolfson Sch Mech Elect & Mfg Engn, Loughborough LE11 3TU, Leics, England
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2020年 / 9卷 / 10期
基金：
英国工程与自然科学研究理事会;
关键词：
Relays; Fading channels; Upper bound; Rician channels; Optimization; Hybrid power systems; Array signal processing; Intelligent reflecting surface; decode-and-forward; power optimization; ergodic capacity; WIRELESS COMMUNICATION;
D O I：
10.1109/LWC.2020.2999918
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter proposes a novel hybrid relay and Intelligent Reflecting Surface (IRS) assisted system for future wireless networks. We demonstrate that for practical scenarios where the amount of radiated power and/or the number of reflecting elements are/is limited, the performance of an IRS-supported system can be significantly enhanced by utilizing a simple Decode-and-Forward (DF) relay. Tight upper bounds for the ergodic capacity are derived for the proposed scheme under different channel environments, and shown to closely match Monte-Carlo simulations.
引用
收藏
页码：1653 / 1657
页数：5
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