Article(id=1251893513361768979, tenantId=1146029695717560320, journalId=1251234473337991274, issueId=1251893504037831074, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1003-3114.2025.05.008, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1736784000000, receivedDateStr=2025-01-14, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776404272642, onlineDateStr=2026-04-17, pubDate=1758124800000, pubDateStr=2025-09-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776404272642, onlineIssueDateStr=2026-04-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776404272642, creator=13701087609, updateTime=1776404272642, updator=13701087609, issue=Issue{id=1251893504037831074, tenantId=1146029695717560320, journalId=1251234473337991274, year='2025', volume='51', issue='5', pageStart='877', pageEnd='1134', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776404270419, creator=13701087609, updateTime=1776404832543, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251895861849043019, tenantId=1146029695717560320, journalId=1251234473337991274, issueId=1251893504037831074, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251895861849043020, tenantId=1146029695717560320, journalId=1251234473337991274, issueId=1251893504037831074, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=951, endPage=958, ext={EN=ArticleExt(id=1251893513831531059, articleId=1251893513361768979, tenantId=1146029695717560320, journalId=1251234473337991274, language=EN, title=Performance of RSMA-based Active RIS-assisted Communication Systems with User Random Deployment, columnId=1251893506944483753, journalTitle=Radio Communications Technology, columnName=Special Topic: 6G and IoT Technologies, runingTitle=null, highlight=null, articleAbstract=
Reconfigurable Intelligent Surface (RIS) and Rate Splitting Multiple Access (RSMA) technologies are two emerging communication techniques with broad prospects in future wireless systems. Active RIS (ARIS) has the advantage of overcoming the effects of multiplicative fading compared to Passive RIS (PRIS). The paper addresses the outage performance of ARIS-assisted RSMA systems under random deployment. Under Nakagami-m small-scale fading model in downlink, multiple users are randomly distributed within a semicircular region around ARIS and sorted by the distances between the users and ARIS. Taking the optimal phase shift for the furthest user as the entry point, a moment matching approach is employed to derive the shape and scale parameters associated with the cascaded channel power characteristic for each RSMA user. We derive a closed-form expression for the outage performance of the users, analyze the effect of the power splitting coefficients on the Outage Probability (OP), and obtain the diversity order and an expression for the approximate OP. Simulation results show that the OP of a non-perfect phase-shifted user under ARIS-assistance is re duced by 58% compared to the passive RIS-assisted system under a power budget of 50 dBm and a moderate amount of RIS elements. In addition, the power consumption of the user with the optimal phase shift is reduced by 53 dBm.
, correspAuthors=Suyue LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Yabin ZHANG, Suyue LI, Yongjun XU), CN=ArticleExt(id=1251893543229407895, articleId=1251893513361768979, tenantId=1146029695717560320, journalId=1251234473337991274, language=CN, title=面向用户随机部署的RSMA有源RIS辅助通信系统性能研究, columnId=1251893507133227435, journalTitle=无线电通信技术, columnName=专题:6G与物联网技术, runingTitle=null, highlight=null, articleAbstract=
可重构智能表面(Reconfigurable Intelligent Surface,RIS)和速率分拆多址接入(Rate Splitting Multiple Access,RSMA)技术是未来无线系统中具有广阔前景的2项新兴通信技术。与无源RIS(Passive RIS,PRIS)相比,有源RIS(Active RIS,ARIS)具有克服“乘性衰落”的优势。针对随机部署下ARIS辅助RSMA系统的中断性能展开研究,在Nakagami-m小尺度衰落模型下,多个用户随机分布在ARIS周围的半圆形区域内。通过对用户到ARIS的距离排序,以最远用户实现最优相移为切入点,采用矩匹配方法为每个RSMA用户计算关于级联信道功率特性的形状和尺度参数,并推导了用户中断性能的闭式表达式。进一步分析了功率分配系数对中断概率(Outage Probability,OP)的影响,并给出了分集阶数和渐近OP的表达式。仿真结果表明,在功率预算为50 dBm和适量RIS元件的条件下,ARIS辅助下非最优相移用户的OP较PRIS辅助系统降低了58%;最优相移用户的功率消耗减少了53 dBm。
, correspAuthors=李素月, authorNote=null, correspAuthorsNote=
李素月 女,(1980—),博士,教授。主要研究方向:智能表面辅助通信、通感一体化、无人机通信、AI智能通信技术。
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张亚宾 男,(1998—),硕士研究生。主要研究方向:智能反射面辅助通信。
徐勇军 男,(1986—),博士,教授,博士生导师。主要研究方向:智能反射面、反向散射通信、资源分配等。
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1.太原科技大学 电子信息工程学院,山西 太原 030024, bio={"content":"
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张亚宾 男,(1998—),硕士研究生。主要研究方向:智能反射面辅助通信。
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2.School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1251895538610815918, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893513361768979, authorId=1251895538434655136, language=CN, stringName=徐勇军, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.重庆邮电大学 通信与信息工程学院,重庆 400065, bio={"content":"
徐勇军 男,(1986—),博士,教授,博士生导师。主要研究方向:智能反射面、反向散射通信、资源分配等。
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徐勇军 男,(1986—),博士,教授,博士生导师。主要研究方向:智能反射面、反向散射通信、资源分配等。
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