CN111817990B - Ofdm系统中基于最小均方误差的一种信道估计改进算法 - Google Patents
Ofdm系统中基于最小均方误差的一种信道估计改进算法 Download PDFInfo
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- CN111817990B CN111817990B CN202010573742.9A CN202010573742A CN111817990B CN 111817990 B CN111817990 B CN 111817990B CN 202010573742 A CN202010573742 A CN 202010573742A CN 111817990 B CN111817990 B CN 111817990B
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- 238000004422 calculation algorithm Methods 0.000 title abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 238000012549 training Methods 0.000 claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 16
- 239000000969 carrier Substances 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005562 fading Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/022—Channel estimation of frequency response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
4导频MMSE | 8导频MMSE | 8导频A-MMSE | |
数字调制方式 | QPSK | QPKS | QPSK |
子载波数 | 64 | 64 | 64 |
导频数量 | 4 | 8 | 8 |
子载波间隔 | 312.5KHz | 312.5KHz | 312.5KHz |
导频符号 | [1 1 1 -1] | [1 1 1 1 1 1 -1 -1] | [1 1 1 1 1 1 -1 -1] |
最大时延扩展 | 50ns | 50ns | 50ns |
多径数目 | 5 | 5 | 5 |
各径时延(ns) | [0 1 2 4 5] | [0 1 2 4 5] | [0 1 2 4 5] |
过采样倍数 | J=1 | J=1 | J=2 |
信道频域响应 | H<sub>MMSE_2</sub> | H<sub>MMSE_3</sub> | H<sub>MMSE_1</sub>+H<sub>MMSE_3</sub> |
Claims (1)
Priority Applications (1)
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CN202010573742.9A CN111817990B (zh) | 2020-06-22 | 2020-06-22 | Ofdm系统中基于最小均方误差的一种信道估计改进算法 |
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CN202010573742.9A CN111817990B (zh) | 2020-06-22 | 2020-06-22 | Ofdm系统中基于最小均方误差的一种信道估计改进算法 |
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CN111817990A CN111817990A (zh) | 2020-10-23 |
CN111817990B true CN111817990B (zh) | 2022-08-09 |
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Families Citing this family (1)
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CN112866150B (zh) * | 2021-01-13 | 2024-05-17 | 上海复旦通讯股份有限公司 | 一种无线信道特征提取与降维方法及系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101547174A (zh) * | 2009-04-30 | 2009-09-30 | 中国电子科技集团公司第五十四研究所 | Sc-fde系统的相位与符号同步、信道估计和频域均衡方法 |
CN103326966A (zh) * | 2013-05-16 | 2013-09-25 | 东莞中山大学研究院 | 适用于无线局域网ofdm系统的信道估计方法 |
WO2016019511A1 (zh) * | 2014-08-05 | 2016-02-11 | 华为技术有限公司 | 无线通信系统的干扰消除方法和装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7978776B2 (en) * | 2008-01-16 | 2011-07-12 | Southern Taiwan University Of Technology | Channel estimation device and related method of an orthogonal frequency division multiplexing system |
CN103873397B (zh) * | 2014-03-28 | 2018-01-09 | 江苏正赫通信息科技有限公司 | 一种新的联合时域和频域正交频分复用接收信道估计方法 |
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2020
- 2020-06-22 CN CN202010573742.9A patent/CN111817990B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101547174A (zh) * | 2009-04-30 | 2009-09-30 | 中国电子科技集团公司第五十四研究所 | Sc-fde系统的相位与符号同步、信道估计和频域均衡方法 |
CN103326966A (zh) * | 2013-05-16 | 2013-09-25 | 东莞中山大学研究院 | 适用于无线局域网ofdm系统的信道估计方法 |
WO2016019511A1 (zh) * | 2014-08-05 | 2016-02-11 | 华为技术有限公司 | 无线通信系统的干扰消除方法和装置 |
Non-Patent Citations (1)
Title |
---|
基于压缩感知重构算法的MIMO-OFDM稀疏信道估计方法研究;叶新荣;《中国优秀博硕士学位论文全文数据库(博士)信息科技辑》;20150515;第49-74页 * |
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