Article(id=1239158370406551594, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239158367571210992, articleNumber=null, orderNo=null, doi=10.12347/j.ycyk.20250617002, pmid=null, cstr=32406.14.ycyk.20250617002, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1750089600000, receivedDateStr=2025-06-17, revisedDate=1754064000000, revisedDateStr=2025-08-02, acceptedDate=null, acceptedDateStr=null, onlineDate=1773367977953, onlineDateStr=2026-03-13, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1773367977953, onlineIssueDateStr=2026-03-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1773367977953, creator=13701087609, updateTime=1773367977953, updator=13701087609, issue=Issue{id=1239158367571210992, tenantId=1146029695717560320, journalId=1238841944844054536, year='2025', volume='46', issue='6', pageStart='1', pageEnd='170', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=0, createTime=1773367977278, creator=13701087609, updateTime=1773368232261, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1239159437122917323, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239158367571210992, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1239159437122917324, tenantId=1146029695717560320, journalId=1238841944844054536, issueId=1239158367571210992, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=45, endPage=52, ext={EN=ArticleExt(id=1239158370670792750, articleId=1239158370406551594, tenantId=1146029695717560320, journalId=1238841944844054536, language=EN, title=Dual-Antenna STBC Channel Estimation Technology for Communication in UAV Cluster Network, columnId=1239133503154081962, journalTitle=Journal of Telemetry, Tracking and Command, columnName=TT & C Communication and Navigation, runingTitle=null, highlight=null, articleAbstract=
A novel channel estimation algorithm based on energy ratio confidence with dynamic dual-threshold decision is proposed to address the issues of missed path detection and performance degradation in existing channel estimation algorithms for dual-antenna space-time block coding (STBC) communication systems within unmanned aerial vehicle (UAV) swarm networking scenarios. These issues arise due to fixed thresholds and insufficient noise handling within the channel response length. Significantly, the proposed algorithm does not require prior knowledge of the exact channel impulse response length. Simulation results demonstrate that the proposed algorithm achieves a performance gain of nearly 2 dB at a bit error rate (BER) on the order of 1E-5 compared to the conventional threshold-based Fourier Transform-Least Squares algorithm. Furthermore, the algorithm effectively suppresses the noise in the estimated channel impulse response, leading to significantly enhanced channel estimation performance for UAV swarm networking.
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针对无人机集群组网场景中双天线空时编码(STBC)通信系统现有的信道估计算法由于阈值固定、对信道响应长度内噪声处理不足导致的路径漏检、性能不佳的问题,本文提出一种基于能量比置信度的动态双阈值判决的信道估计改进算法,并且该算法无需预先获取确切信道响应长度。对该算法的性能进行了对比仿真,结果表明,本文提出的算法相较于传统基于阈值的傅里叶变换-最小二乘算法在误码率为1E-5数量级时有接近2 dB的性能提升,并且能有效地滤除信道冲激响应估计值中的噪声,提升了无人机集群组网中的信道估计性能。
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陈俊霖 2001年生,硕士研究生。
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闫朝星 1985年生,博士,研究员。
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付林罡 1982年生,硕士,研究员。
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付林罡 1982年生,硕士,研究员。
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申鹏飞 1997年生,博士,工程师。
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The system model of 2×2 MIMO SC-FDE system, figureFileSmall=aI+Mv/KCRmD16UaQ10ZTog==, figureFileBig=XL9c9T73d64g/wb64MbgUQ==, tableContent=null), ArticleFig(id=1239158386256826955, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图1, caption=
2×2MIMO SC-FDE系统模型, figureFileSmall=aI+Mv/KCRmD16UaQ10ZTog==, figureFileBig=XL9c9T73d64g/wb64MbgUQ==, tableContent=null), ArticleFig(id=1239158386449764949, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 2, caption=
The schematic diagram of the time-domain and frequency-domain structures of the training sequence in a 2×2 STBC SC-FDE system, figureFileSmall=g8hhR9Y8sjC/LPzq03tnBw==, figureFileBig=awK3EPi3T1zt3jqfo7a06w==, tableContent=null), ArticleFig(id=1239158386542039642, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图2, caption=
2×2 STBC SC-FDE系统训练序列时域及频域结构示意图, figureFileSmall=g8hhR9Y8sjC/LPzq03tnBw==, figureFileBig=awK3EPi3T1zt3jqfo7a06w==, tableContent=null), ArticleFig(id=1239158386630120032, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 3, caption=
The schematic diagram of training sequence transmission in 2×2 STBC SC-FDE system, figureFileSmall=eTATJ9PnhvLpqZ5bob+qOQ==, figureFileBig=NWx+HQIog4vbQBd5QPIdMA==, tableContent=null), ArticleFig(id=1239158386714006116, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图3, caption=
2×2 STBC SC-FDE系统训练序列传输示意图, figureFileSmall=eTATJ9PnhvLpqZ5bob+qOQ==, figureFileBig=NWx+HQIog4vbQBd5QPIdMA==, tableContent=null), ArticleFig(id=1239158386793697895, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 4, caption=
The process of DBD-ERC channel estimation algorithm, figureFileSmall=leFBSMtN9LkBLyZxinM81w==, figureFileBig=jdPyj1yUY2YU0zEMlk/lTQ==, tableContent=null), ArticleFig(id=1239158386936304236, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图4, caption=
DBD-ERC信道估计算法流程, figureFileSmall=leFBSMtN9LkBLyZxinM81w==, figureFileBig=jdPyj1yUY2YU0zEMlk/lTQ==, tableContent=null), ArticleFig(id=1239158387045356146, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 5, caption=
Comparison of channel impulse response between LS algorithm and DBD-ERC algorithm, figureFileSmall=qM5xglYeB4Bx7eM/toqY4Q==, figureFileBig=ryBs1fPMHpT/Ve/SiHXNuA==, tableContent=null), ArticleFig(id=1239158387141825143, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图5, caption=
使用LS算法后和使用DBD-ERC算法后的信道冲激响应对比, figureFileSmall=qM5xglYeB4Bx7eM/toqY4Q==, figureFileBig=ryBs1fPMHpT/Ve/SiHXNuA==, tableContent=null), ArticleFig(id=1239158387250877051, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 6, caption=
Comparison of BER simulation results among three channel estimation algorithms and benchmark, figureFileSmall=0xM7dD2chDpgq3Hsc5lT8A==, figureFileBig=C2vn+tkb1UNUHddaHEJXsA==, tableContent=null), ArticleFig(id=1239158387326374528, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图6, caption=
三种信道估计算法和基准的BER仿真结果对比, figureFileSmall=0xM7dD2chDpgq3Hsc5lT8A==, figureFileBig=C2vn+tkb1UNUHddaHEJXsA==, tableContent=null), ArticleFig(id=1239158387439620739, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Fig. 7, caption=
Comparison of NMSE simulation results for three channel estimation algorithms, figureFileSmall=YCJS2N5v9rQTwCqO/DUMCQ==, figureFileBig=WC03e+LoCKe9jm74n412rA==, tableContent=null), ArticleFig(id=1239158387515118217, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=图7, caption=
三种信道估计算法的NMSE仿真结果对比, figureFileSmall=YCJS2N5v9rQTwCqO/DUMCQ==, figureFileBig=WC03e+LoCKe9jm74n412rA==, tableContent=null), ArticleFig(id=1239158387624170126, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=EN, label=Table 1, caption=
Simulation parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 类型或取值(范围) |
|---|
| 系统类型 | STBC SC-FDE系统 |
| 符号数 | 106 |
| 信噪比范围(dB) | [0,14] |
| FFT长度 | 64 |
| 信道类型 | 瑞利衰落信道 |
| 调制类型 | QPSK |
| SC-FDE块大小 | 64 |
), ArticleFig(id=1239158387699667604, tenantId=1146029695717560320, journalId=1238841944844054536, articleId=1239158370406551594, language=CN, label=表1, caption=
仿真参数表
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 类型或取值(范围) |
|---|
| 系统类型 | STBC SC-FDE系统 |
| 符号数 | 106 |
| 信噪比范围(dB) | [0,14] |
| FFT长度 | 64 |
| 信道类型 | 瑞利衰落信道 |
| 调制类型 | QPSK |
| SC-FDE块大小 | 64 |
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