反向散射通信中标签选择策略中断性能分析  

Outage Performance of Tag Selection Scheme for Backscatter Communication Systems

作　　者：刘英挺 周治洋 耿梦丹 李兴旺 LIU Yingting;ZHOU Zhiyang;GENG Mengdan;LI Xingwang(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;State Grid Gansu Electric Power Research Institute,Lanzhou 730070,China;School of Physics and Electronic Information Engineering,Henan Polytechnic University,Jiaozuo 454003,China;Jiaozuo Key Laboratory of Group Intelligence Sensing Network,Jiaozuo 454003,China)

机构地区：[1]兰州交通大学电子与信息工程学院,兰州730070 [2]国网甘肃省电力公司电力科学研究院,兰州730070 [3]河南理工大学物理与电子信息学院,焦作454003 [4]焦作市群智感知网络重点实验室,焦作454003

出　　处：《电子与信息学报》2024年第6期2401-2408,共8页Journal of Electronics & Information Technology

基　　金：甘肃省自然科学基金(23JRRA849);国家自然科学基金(61861041);河南省科技攻关项目(232102211073);甘肃省博士后研究资助项目;甘肃省教育厅:青年博士支持项目(2024QB-045T)。

摘　　要：该文研究的反向散射通信(BackCom)系统由1个专用射频信号源、若干个标签及1个目的节点构成。在考虑了信道估计误差(CEE)的前提下,该文在Nakagami-m信道中,提出了能够最大化目的节点信噪比(SNR)的标签选择策略,推导了所提策略的中断概率和分集增益的解析表达式。该文的分析中,考虑了标签自身能耗对系统性能的影响。仿真结果验证了理论分析的正确性,同时考察了关键参数对系统性能的影响。理论分析和仿真结果均表明,信道估计误差的存在使得系统的分集增益为0。The considered Backscatter Communication(BackCom)system consists of one dedicated radio frequency source node,some tags and one destination node.In consideration of the Channel Estimation Error(CEE),the tag selection scheme in which the tag selection scheme that can maximize the received Signal-to-Noise Ratio(SNR)at the destination is proposed over the Nakagami-m channels,and the corresponding analytical results of the outage probability and diversity gain are derived.In this paper,the consumed power by tags is considered.The numerical results verify the obtained analytical results and investigate the key parameters on the system performance.Both the analytical and numerical results show that the existence of the CEE make the corresponding diversity gain zero.

关 键 词：反向散射通信 信道估计误差 中断性能 标签选择 NAKAGAMI-M信道 

分 类 号：TN926[电子电信—通信与信息系统]