Resisting Undesired Signal Through IRS-Based Backscatter Communication System

被引：27
作者：
Xu, Sai [1 ,2 ]
Liu, Jiajia [2 ]
Zhang, Jie [3 ,4 ]
机构：
[1] NPU, Yangtze River Delta Res Inst, Taicang 215400, Peoples R China
[2] Northwestern Polytech Univ, Sch Cybersecur, Natl Engn Lab Integrated Aerosp Ground Ocean Big, Xian 710072, Peoples R China
[3] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S10 2TN, S Yorkshire, England
[4] Ranplan Wireless Network Design Ltd, Cambridge CB23 3UY, England
来源：
IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Backscatter; Jamming; Array signal processing; Interference; Optimization; Modulation; Signal to noise ratio; Intelligent reflecting surface; backscatter communication; undesired signal; beamforming; INTELLIGENT; OPTIMIZATION;
D O I：
10.1109/LCOMM.2021.3077093
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This letter first proposes to resist undesired signal such as interference or jamming signal using intelligent reflecting surface (IRS)-based backscatter communication system. When strong undesired signal aggravates the reception at a user seriously, reliable transmission may not be realized. Unlike the conventional methods consuming more power to mitigate the adverse effect, we attempt to harvest the power of undesired signal to fight it. Specifically, an IRS is used as a transmitter, which transforms the undesired signal into the desired signal, accompanied by its backscatter. Additionally, we optimize joint beamforming at the source and the IRS to improve the reception at the user. Simulation results verify that a substantial reception improvement is achieved by the proposed strategy.
引用
收藏
页码：2743 / 2747
页数：5
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