Article(id=1251893510341866050, tenantId=1146029695717560320, journalId=1251234473337991274, issueId=1251893504037831074, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1003-3114.2025.05.018, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744473600000, receivedDateStr=2025-04-13, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776404271922, onlineDateStr=2026-04-17, pubDate=1758124800000, pubDateStr=2025-09-18, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776404271922, onlineIssueDateStr=2026-04-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776404271922, creator=13701087609, updateTime=1776404271922, 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=1056, endPage=1066, ext={EN=ArticleExt(id=1251893511491105359, articleId=1251893510341866050, tenantId=1146029695717560320, journalId=1251234473337991274, language=EN, title=Multi-subcarrier-aided Near-field Wideband Channel Estimation for XL-MIMO Systems, columnId=1251893508886446519, journalTitle=Radio Communications Technology, columnName=Special Topic:Frontiers in Intelligent Communication, Storage, and Information Processing Technologies, runingTitle=null, highlight=null, articleAbstract=
Focusing on the channel estimation accuracy degradation caused by the beam splitting effect in near-field wideband Extremely-Large Scale Multiple Input Multiple Output (XL-MIMO) systems, this paper proposes a Bi-Directional Integrated Multi-Subcarrier Augmented Bilinear Pattern Detection (BDI-MSABPD) algorithm. Built upon the polar-domain sparse representation framework, the proposed method addresses both the sparse support set misalignment and parameter estimation bias induced by beam splitting through a dual mechanism combining explicit polar-domain resolution enhancement and implicit multi-subcarrier joint optimization. Simulation results demonstrate that the BDI-MSABPD achieves an average reduction of 2 dB in Normalized Mean Squared Error (NMSE) compared with conventional Bilinear Pattern Detection (BPD) algorithm.
, correspAuthors=Jiang TIAN, 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=Fang LEI, Jiang TIAN, Juntao ZHANG, Shaojie ZHENG), CN=ArticleExt(id=1251893560170197186, articleId=1251893510341866050, tenantId=1146029695717560320, journalId=1251234473337991274, language=CN, title=一种基于多子载波的XL-MIMO系统宽带近场信道估计方法, columnId=1251893509079384505, journalTitle=无线电通信技术, columnName=专题:智能通信、存储与信息处理技术前沿, runingTitle=null, highlight=null, articleAbstract=
针对宽带近场超大规模多输入多输出(Extremely-Large Scale Multiple Input Multiple Output,XL-MIMO)系统场景中波束分裂效应引发的信道估计精度下降问题,提出一种双向融合多子载波增强型双线性模式检测(Bi-Directional Integrated Multi-Subcarrier Augmented Bilinear Pattern Detection,BDI-MSABPD)算法。该算法基于极坐标域稀疏表征框架,通过显式极坐标域分辨率增强与隐式多子载波联合优化的双重机制,解决了波束分裂导致的稀疏支撑集失准和参数估计偏差问题。仿真结果表明,所提算法相较传统双线性模式检测(Bilinear Pattern Detection,BPD)算法,归一化均方误差(Normalized Mean Squared Error,NMSE)平均降低了2 dB。
, correspAuthors=田江, authorNote=null, correspAuthorsNote=
田江 男,(1998—),硕士研究生。主要研究方向:移动通信物理层协议与信道估计。
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雷芳 女,(1972—),硕士,副教授。主要研究方向:移动通信、电子新技术应用。
张峻滔 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信号检测。
郑少杰 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信道估计。
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雷芳 女,(1972—),硕士,副教授。主要研究方向:移动通信、电子新技术应用。
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雷芳 女,(1972—),硕士,副教授。主要研究方向:移动通信、电子新技术应用。
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张峻滔 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信号检测。
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张峻滔 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信号检测。
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郑少杰 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信道估计。
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郑少杰 男,(1999—),硕士研究生。主要研究方向:移动通信物理层协议与信道估计。
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Multi-user near-field channel modeling, figureFileSmall=WKuuVJ76ZIFMMPWNxPa/0g==, figureFileBig=zD67GEyh47ZsNBm4saG/SQ==, tableContent=null), ArticleFig(id=1251895558428897313, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=CN, label=图2, caption=
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Signal noise ratio dependent BER performance of algorithms, figureFileSmall=p4q3rcFfXZPrD1x+pGOM6g==, figureFileBig=xKJpxuUeMmqkA9Av+LAkDg==, tableContent=null), ArticleFig(id=1251895559091597355, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=CN, label=图7, caption=
不同信噪比下算法的BER, figureFileSmall=p4q3rcFfXZPrD1x+pGOM6g==, figureFileBig=xKJpxuUeMmqkA9Av+LAkDg==, tableContent=null), ArticleFig(id=1251895559158706220, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
|
|---|
| 输入:接收信号Y,观测矩阵A,极坐标域表征矩阵W |
| 输出:估计的宽带信道矩阵H |
| 阶段一:预白化阶段 |
1: |
| 2:C=σ2SVSH,D=SV1/2 |
| 3:通过矩阵D对接收信号进行预白化处理 |
 |
| 阶段二:路径检测阶段 |
4:初始化残差矩阵R=[r1r2… rM]= 和支持集γ={∅} |
| 5:计算角度域线性模式Γ(na,m)和距离域线性模式Ξ(nd,m) |
| 6:for l∈{1,2,…,L} |
| 7: U=ΨHR=[u1u2… uM] |
8: 由式(12)和式(15)计算拓展后的角度域样本 和距离域样本 并计算修正后的角度域索引na和距离域索引nd |
9:  |
10:  |
11: um((Ξ(nd,m)-1)Na+Γ(na,m))‖2 |
12:获取与 对应的 ,在 中唯一角度域样本分为K个独立组别n=[n1,n2,…,nk,…,nK] |
| 13:for nk∈{n1,n2,…,nK} do |
14:获取与唯一角度域样本nk对应的子载波索引mk∈{mk1,mk2,…, },并找出最大阵列增益的子载波索引mk |
| 15:end for |
16:收集具有最大功率的角度域样本n=[n1,n2,…,nk,…,nK]和对应的m=[mk1,mk2,…,mk],并通过线性拟合获得斜率,得到精炼的 17: |
18: |
19: |
| 20:end for |
| 21:for m∈{1,2,…,M} do |
| 22:Ωm=Υ1,m∪Υ2,m…∪Υl,m |
23: |
| 24:end for |
25: |
), ArticleFig(id=1251895559225815085, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=CN, label=算法1, caption=
BDI-MSABPD算法
, figureFileSmall=null, figureFileBig=null, tableContent=
|
|---|
| 输入:接收信号Y,观测矩阵A,极坐标域表征矩阵W |
| 输出:估计的宽带信道矩阵H |
| 阶段一:预白化阶段 |
1: |
| 2:C=σ2SVSH,D=SV1/2 |
| 3:通过矩阵D对接收信号进行预白化处理 |
 |
| 阶段二:路径检测阶段 |
4:初始化残差矩阵R=[r1r2… rM]= 和支持集γ={∅} |
| 5:计算角度域线性模式Γ(na,m)和距离域线性模式Ξ(nd,m) |
| 6:for l∈{1,2,…,L} |
| 7: U=ΨHR=[u1u2… uM] |
8: 由式(12)和式(15)计算拓展后的角度域样本 和距离域样本 并计算修正后的角度域索引na和距离域索引nd |
9:  |
10:  |
11: um((Ξ(nd,m)-1)Na+Γ(na,m))‖2 |
12:获取与 对应的 ,在 中唯一角度域样本分为K个独立组别n=[n1,n2,…,nk,…,nK] |
| 13:for nk∈{n1,n2,…,nK} do |
14:获取与唯一角度域样本nk对应的子载波索引mk∈{mk1,mk2,…, },并找出最大阵列增益的子载波索引mk |
| 15:end for |
16:收集具有最大功率的角度域样本n=[n1,n2,…,nk,…,nK]和对应的m=[mk1,mk2,…,mk],并通过线性拟合获得斜率,得到精炼的 17: |
18: |
19: |
| 20:end for |
| 21:for m∈{1,2,…,M} do |
| 22:Ωm=Υ1,m∪Υ2,m…∪Υl,m |
23: |
| 24:end for |
25: |
), ArticleFig(id=1251895560773513262, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=EN, label=Tab. 1, caption=
Simulation parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 值 |
|---|
| BS天线数量N | 256 |
| 子载波数量M | 256 |
| 角度域样本数Na | 256 |
| 距离域样本数Nd | 4 |
| 远场路径数量L | 6 |
| 参数β/GHz | 100 |
| 载波频率fc | CN(0,1) |
| 路径增益的分布gl,m | U(0,1) |
), ArticleFig(id=1251895560853205039, tenantId=1146029695717560320, journalId=1251234473337991274, articleId=1251893510341866050, language=CN, label=表1, caption=
仿真参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 值 |
|---|
| BS天线数量N | 256 |
| 子载波数量M | 256 |
| 角度域样本数Na | 256 |
| 距离域样本数Nd | 4 |
| 远场路径数量L | 6 |
| 参数β/GHz | 100 |
| 载波频率fc | CN(0,1) |
| 路径增益的分布gl,m | U(0,1) |
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