Article(id=1207621137341715188, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1207621133784948800, articleNumber=null, orderNo=24, doi=10.3981/j.issn.1000-7857.2025.05.00016, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1746460800000, receivedDateStr=2025-05-06, revisedDate=1747843200000, revisedDateStr=2025-05-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1765848915658, onlineDateStr=2025-12-16, pubDate=1751040000000, pubDateStr=2025-06-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1751472000000, onlineIssueDateStr=2025-07-03, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1765848915658, creator=13701087609, updateTime=1774079756528, updator=sys-migrate, issue=Issue{id=1207621133784948800, tenantId=1146029695717560320, journalId=1146031591421210625, year='2025', volume='43', issue='12', pageStart='1', pageEnd='188', issueExtLink='null', onlineDate='null', pubDate='1751040000000', pubDateStr='2025-06-28', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1765848914810, creator='13701087609', updateTime=1774330924420, updator='13041195026', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1243197260683657459, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1207621133784948800, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1243197260683657460, tenantId=1146029695717560320, journalId=1146031591421210625, issueId=1207621133784948800, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=153, endPage=160, ext={EN=ArticleExt(id=1207621137803088648, articleId=1207621137341715188, tenantId=1146029695717560320, journalId=1146031591421210625, language=EN, title=Research on a remote true-time-delay multi-beamforming system based on multicore fibers, columnId=1150494644690366681, journalTitle=Science & Technology Review, columnName=Papers, runingTitle=null, highlight=null, articleAbstract=
In 5G/6G radio-over-fiber (RoF) networks, remote radio units (RUs) require multi-beamforming functionality to ensure reliable access for ubiquitous mobile terminals. To meet this requirement, multi-core fibers (MCFs) have emerged as a promising solution for RoF links due to their advantages of supporting multiple channels and maintaining excellent inter-channel delay consistency. Here, we proposes a remote optical true-time-delay multi-beamforming architecture based on MCFs, which is suitable for 5G RoF networks. The architecture utilizes MCFs as the link, while deploying chirped fiber Bragg gratings with equal dispersion spacing to provide equal-space time delays at the centralized unit. By independently tuning the wavelengths of each optical carriers, the corresponding beam direction can be continuously adjusted, enabling centralized multi-beam control. To validate the feasibility of this architecture, we use a 2-km 7-core fiber as the RoF link for experiment and build a 2×2 remote beamforming system. Experimental results demonstrate that by tuning the wavelength of each optical carrier, independent control of each beam direction can be achieved. Compared to single-mode fibers, MCF reduces inter-channel delay jitter by more than an order of magnitude, with a maximum delay jitter of 1.7 ps, ensuring long-term stability of the beam direction. Furthermore, the inter-core crosstalk of MCF has a negligible impact on both the preset delays and the signal-to-noise ratio of broadband wireless signals. This architecture provides a feasible and stable solution for realizing remote beamforming, offering significant application value for 5G/6G mobile access networks.
, authors=null, authorsList=Chenbo ZHANG, Yixiao ZHU, Weisheng HU, authorCompany=null, correspAuthors=Yixiao ZHU, authorNote=null, correspAuthorsNote=null, copyrightStatement=
All rights reserved. Unauthorized reproduction is prohibited., 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, fund=null), CN=ArticleExt(id=1207621139585667973, articleId=1207621137341715188, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=基于多芯光纤远端光真时延多波束赋形系统的研究, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
在5G/6G光载无线接入网中,远端无线单元需具备多波束赋形功能,以支持泛在移动终端的可靠接入。针对这一需求,多芯光纤凭借其通道数量多、通道间时延一致性好的优势,成为具有潜力的链路方案。提出一种基于多芯光纤的远端光真时延多波束赋形架构,可用于5G光载无线接入网。该架构利用多芯光纤作为链路,并在中心单元部署具有等色散间隔的啁啾光栅用于提供等间距时延。通过分别调节多路光载波的波长,系统可连续调整远端对应波束的指向,实现中心化的多波束操控。为了验证架构可行性,采用2 km的7芯光纤作为光载无线链路开展实验,搭建了2×2远端波束赋形验证系统。实验结果表明:通过调谐各个光载波的波长,可实现各波束指向的独立控制;与传统单模光纤相比,多芯光纤将通道间时延抖动降低了1个量级以上,最大时延抖动仅为1.7 ps,从而确保波束指向的长期稳定性。此外,实验还表明,多芯光纤的芯间串扰对预设时延和宽带无线信号信噪比的影响可忽略不计。本架构为实现远端波束赋形功能提供了可行、稳定的解决方案,对于5G/6G移动接入网具有重要应用价值。
, authors=
, authorsList=张宸博, 朱逸萧, 胡卫生, authorCompany=null, correspAuthors=朱逸萧, authorNote=null, correspAuthorsNote=
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版权所有,未经授权,不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=K+uEJIg3UO1gPDwFHJ2ARw==, magXml=K+uEJIg3UO1gPDwFHJ2ARw==, pdfUrl=null, pdf=i8WG8IEd9oed6pTxwrZ8/g==, pdfFileSize=1846667, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=Yfnti+T1fcyMbFHJdFZ+cw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=t5/wvseGzkUC1rc/+TQQyg==, mapNumber=null, fund=null)}, authors=[Author(id=1242143804053074367, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=zhangchenbo@pku.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1242143804145349062, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, authorId=1242143804053074367, language=EN, stringName=Chenbo ZHANG, firstName=Chenbo, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1, address=1. 北京大学电子学院, 北京 100871, bio={"content":"
张宸博,助理研究员,研究方向为光载无线通信,电子信箱: zhangchenbo@pku.edu.cn
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张宸博,助理研究员,研究方向为光载无线通信,电子信箱: zhangchenbo@pku.edu.cn
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2, *, address=2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1242143804451533270, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, authorId=1242143804300538318, language=CN, stringName=朱逸萧, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, *, address=2. 上海交通大学电子工程系, 上海 200240, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1242143802568290740, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, xref=null, ext=[AuthorCompanyExt(id=1242143802576679349, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China), AuthorCompanyExt(id=1242143802585067959, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. 上海交通大学电子工程系, 上海 200240)])]), Author(id=1242143804527030746, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1242143804598333917, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, authorId=1242143804527030746, language=EN, stringName=Weisheng HU, firstName=Weisheng, middleName=null, lastName=HU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2, address=2. 上海交通大学电子工程系, 上海 200240, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1242143802568290740, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, xref=null, ext=[AuthorCompanyExt(id=1242143802576679349, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China), AuthorCompanyExt(id=1242143802585067959, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. 上海交通大学电子工程系, 上海 200240)])])], keywords=[Keyword(id=1242143804803854821, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=EN, orderNo=1, keyword=radio-over-fiber), Keyword(id=1242143804900323816, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=EN, orderNo=2, keyword=remote beamforming), Keyword(id=1242143804988404202, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=EN, orderNo=3, keyword=optical true time delay), Keyword(id=1242143805042930156, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=EN, orderNo=4, keyword=multicore fiber), Keyword(id=1242143805110039024, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, orderNo=1, keyword=光载无线技术), Keyword(id=1242143805193925107, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, orderNo=2, keyword=远端波束赋形), Keyword(id=1242143805265228277, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, orderNo=3, keyword=光真时延), Keyword(id=1242143805332337147, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, orderNo=4, keyword=多芯光纤)], refs=[Reference(id=1242143807010058786, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, doi=null, pmid=null, pmcid=null, year=2017, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=1, rfOrder=0, authorNames=Osseiran A, Monserrat J F, Marsch P, journalName=5G移动无线通信技术, refType=null, unstructuredReference=
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46 (15): 3793- 3796., articleTitle=Large-scale true-time- delay remote beamforming with EO frequency combs and multicore fiber, refAbstract=null)], funds=[Fund(id=1242143806842286624, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, awardId=62271305, language=CN, fundingSource=国家自然科学基金面上项目(62271305), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1242143802480210353, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, xref=null, ext=[AuthorCompanyExt(id=1242143802488598963, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802480210353, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. School of Electronics, Peking University, Beijing 100871, China), AuthorCompanyExt(id=1242143802496987572, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802480210353, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. 北京大学电子学院, 北京 100871)]), AuthorCompany(id=1242143802568290740, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, xref=null, ext=[AuthorCompanyExt(id=1242143802576679349, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China), AuthorCompanyExt(id=1242143802585067959, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, companyId=1242143802568290740, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. 上海交通大学电子工程系, 上海 200240)])], figs=[ArticleFig(id=1242143805521080831, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=EN, label=null, caption=null, figureFileSmall=fzADhih4NCm57+R5wEbsdA==, figureFileBig=rNB8ViucCTi/dK980YLvKg==, tableContent=null), ArticleFig(id=1242143805592384000, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, label=图1, caption=
远端多波束赋形系统原理 CU,中心单元;RU,远端无线单元;MCF,多芯光纤;TLS,可调谐激光器;MZM,马赫曾德调制器;EDFA,掺铒光纤放大器;VOA,可调衰减器;WDM,解波分复用器件;PD,光电探测器
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2波束×2元天线阵实验装置和实物系统 VDL,可调时延线;FI,扇入;FO,扇出
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时延差−波长关系 (a)中心单元处的时延差-波长关系;(b)远端无线单元处,波束1对应通道的时延差-波长关系(经纤芯1、2传远);(c)远端无线单元处,波束2对应通道的时延差-波长关系(经纤芯3和纤芯4传远),两真时延通道的时域波形,分别为单频信号和调制后的信号
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远端无线单元处,通道间时延差的长期稳定性 (a)(b)分别对应多芯光纤和标准单模光纤
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远端波束指向的稳定性 (a)(c)(d)为多芯光纤对应结果;(b)(e)(f)为单模光纤对应结果
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传输无线信号的性能 BTB,中心单元(本地背靠背);core 1~4,经多芯光纤芯1~4传至远端无线单元
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| 串扰值/dB | 纤芯1 | 纤芯2 | 纤芯3 | 纤芯4 |
| 纤芯1 | — | -43.4 | -29.7 | -39.4 |
| 纤芯2 | -38.8 | — | -33.6 | -28.9 |
| 纤芯3 | -31.4 | -42.9 | — | -39.3 |
| 纤芯4 | -40.1 | -31.1 | -41.5 | — |
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实验所使用4个纤芯的芯间串扰矩阵
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| 串扰值/dB | 纤芯1 | 纤芯2 | 纤芯3 | 纤芯4 |
| 纤芯1 | — | -43.4 | -29.7 | -39.4 |
| 纤芯2 | -38.8 | — | -33.6 | -28.9 |
| 纤芯3 | -31.4 | -42.9 | — | -39.3 |
| 纤芯4 | -40.1 | -31.1 | -41.5 | — |
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| 光真时延方案 | 波束指向控制连续性 | 多波束赋形能力 | 支持带宽 | 是否支持远端天线阵 | 参考文献 |
| N比特可调时延线阵列 | 不连续 | 具备 | 宽带 | 不支持 | [11-12] |
| 多波长光源结合色散器件 | 连续 | 不具备 | 宽带 | 不支持 | [13] |
| 微环谐振器阵列 | 连续 | 具备 | 窄带 | 支持 | [15] |
| 本方案 | 连续 | 具备 | 宽带 | 支持 | — |
), ArticleFig(id=1242143806661931547, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1207621137341715188, language=CN, label=表2, caption=
光真时延波束赋形方案性能对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 光真时延方案 | 波束指向控制连续性 | 多波束赋形能力 | 支持带宽 | 是否支持远端天线阵 | 参考文献 |
| N比特可调时延线阵列 | 不连续 | 具备 | 宽带 | 不支持 | [11-12] |
| 多波长光源结合色散器件 | 连续 | 不具备 | 宽带 | 不支持 | [13] |
| 微环谐振器阵列 | 连续 | 具备 | 窄带 | 支持 | [15] |
| 本方案 | 连续 | 具备 | 宽带 | 支持 | — |
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