基于有源智能反射面反射单元分组的反射调制系统  

A Reflection Modulation System Based on Reflecting Element Grouping of Active Intelligent Reflecting Surface

作　　者：熊军洲[1,2] 李国权 王钥涛[1] 林金朝 XIONG Junzhou;LI Guoquan;WANG Yuetao;LIN Jinzhao(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Electronics and Internet of Things,Chongqing Polytechnic University of Electronic Technology,Chongqing 401331,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆电子科技职业大学电子与物联网学院,重庆401331

出　　处：《电子与信息学报》2024年第7期2765-2772,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(U21A20447);重庆市自然科学基金创新群体科学基金(cstc2020jcyj-cxtt X0002)。

摘　　要：为克服智能反射面(IRS)辅助通信系统的“双重路径损耗”,进一步提升系统的可靠性和频谱效率,该文提出一种基于有源IRS反射单元分组的反射调制(RM)系统方案,利用有源反射单元分组的数量来传输额外信息。然后基于矩母函数推导了最大似然检测算法下基站发射符号与有源反射单元分组数量的平均成对错误概率,获取到系统的理论比特错误概率(BEP)上界以及可达速率。仿真结果验证了理论推导的准确性,同时表明所提方案具有更优的误码性能和频谱效率。To overcome the“double path loss”in Intelligent Reflecting Surface(IRS)assisted communication system and further enhance the reliability and spectral efficiency,a Reflection Modulation(RM)system scheme based on grouping of active IRS reflecting elements is proposed.This scheme utilizes the number of active reflecting element groups to transmit additional information.Then the average pairwise error probability of both the symbols transmitted by base station and the number of active reflecting element groups under the maximum likelihood detection algorithm is derived based on the moment generating function,and an upper bound on the theoretical Bit Error Probability(BEP)as well as the achievable data rate of the system are obtained.Simulation results verify the accuracy of the theoretical derivation and demonstrate the superior error performance and spectral efficiency of the proposed scheme.

关 键 词：智能反射面 反射调制 比特错误概率 可达速率 

分 类 号：TN92[电子电信—通信与信息系统]