DE60028200T2 - Vorrichtung und Verfahren zur Kanalschätzung für OFDM-System - Google Patents
Vorrichtung und Verfahren zur Kanalschätzung für OFDM-System Download PDFInfo
- Publication number
- DE60028200T2 DE60028200T2 DE60028200T DE60028200T DE60028200T2 DE 60028200 T2 DE60028200 T2 DE 60028200T2 DE 60028200 T DE60028200 T DE 60028200T DE 60028200 T DE60028200 T DE 60028200T DE 60028200 T2 DE60028200 T2 DE 60028200T2
- Authority
- DE
- Germany
- Prior art keywords
- pilot symbols
- channel
- symbol
- data stream
- channel estimation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000012937 correction Methods 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 description 21
- 238000004891 communication Methods 0.000 description 20
- 230000001427 coherent effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- 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
- H04L27/2657—Carrier synchronisation
-
- 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
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00116635A EP1178640B1 (en) | 2000-08-01 | 2000-08-01 | Device and method for channel estimating an OFDM system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE60028200D1 DE60028200D1 (de) | 2006-06-29 |
| DE60028200T2 true DE60028200T2 (de) | 2007-03-15 |
Family
ID=8169423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE60028200T Expired - Lifetime DE60028200T2 (de) | 2000-08-01 | 2000-08-01 | Vorrichtung und Verfahren zur Kanalschätzung für OFDM-System |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7012882B2 (enExample) |
| EP (1) | EP1178640B1 (enExample) |
| JP (1) | JP2002111620A (enExample) |
| DE (1) | DE60028200T2 (enExample) |
Families Citing this family (55)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1530336B1 (en) | 1999-01-08 | 2009-06-10 | Sony Deutschland GmbH | Synchronization preamble structure for OFDM system |
| DE10039902B4 (de) * | 2000-08-16 | 2011-04-28 | Rohde & Schwarz Gmbh & Co. Kg | Verfahren zur Frequenz- und Zeit-Synchronisation eines Empfängers |
| US7248559B2 (en) | 2001-10-17 | 2007-07-24 | Nortel Networks Limited | Scattered pilot pattern and channel estimation method for MIMO-OFDM systems |
| US7209433B2 (en) | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
| US6862440B2 (en) * | 2002-05-29 | 2005-03-01 | Intel Corporation | Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration |
| US7173991B2 (en) | 2002-06-17 | 2007-02-06 | Hitachi, Ltd. | Methods and apparatus for spectral filtering channel estimates |
| US7139340B2 (en) | 2002-06-28 | 2006-11-21 | Hitachi, Ltd. | Robust OFDM carrier recovery methods and apparatus |
| US7433298B1 (en) | 2002-08-19 | 2008-10-07 | Marvell International Ltd. | Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications |
| US7286514B2 (en) * | 2002-12-10 | 2007-10-23 | New Jersey Institute Of Technology | Method for phase noise suppression for OFDM based WLANs |
| US7639600B1 (en) | 2003-02-12 | 2009-12-29 | Marvell International Ltd. | Low complexity channel estimation for orthogonal frequency division modulation systems |
| JP4077355B2 (ja) | 2003-04-16 | 2008-04-16 | 三菱電機株式会社 | 通信装置および通信方法 |
| CN100505596C (zh) * | 2003-06-10 | 2009-06-24 | 北京邮电大学 | 一种适用于正交频分多址系统的信道估计方法 |
| US20050059366A1 (en) * | 2003-09-16 | 2005-03-17 | Atheros Communications, Inc. | Spur mitigation techniques |
| US7366462B2 (en) | 2003-10-24 | 2008-04-29 | Qualcomm Incorporated | Method and apparatus for seamlessly switching reception between multimedia streams in a wireless communication system |
| US20070110172A1 (en) * | 2003-12-03 | 2007-05-17 | Australian Telecommunications Cooperative Research | Channel estimation for ofdm systems |
| US8391413B2 (en) * | 2003-12-19 | 2013-03-05 | Qualcomm Incorporated | Channel estimation for an OFDM communication system with inactive subbands |
| US7339999B2 (en) * | 2004-01-21 | 2008-03-04 | Qualcomm Incorporated | Pilot transmission and channel estimation for an OFDM system with excess delay spread |
| US8553822B2 (en) * | 2004-01-28 | 2013-10-08 | Qualcomm Incorporated | Time filtering for excess delay mitigation in OFDM systems |
| ES2885101T3 (es) | 2004-01-29 | 2021-12-13 | Neo Wireless Llc | Procedimientos y aparatos para superponer señales de espectro ensanchado de secuencia directa y de múltiples portadoras en un sistema de comunicación inalámbrica de banda ancha |
| US7570722B1 (en) * | 2004-02-27 | 2009-08-04 | Marvell International Ltd. | Carrier frequency offset estimation for OFDM systems |
| KR100922948B1 (ko) * | 2004-03-11 | 2009-10-22 | 삼성전자주식회사 | 상향링크 직교주파수분할다중접속 시스템을 위한 파일럿설계 방법 |
| CN1951050B (zh) * | 2004-03-15 | 2013-10-30 | 苹果公司 | 用于具有四根发射天线的ofdm系统的导频设计 |
| JP4012167B2 (ja) * | 2004-03-31 | 2007-11-21 | 株式会社東芝 | 無線通信システム |
| US7457231B2 (en) * | 2004-05-04 | 2008-11-25 | Qualcomm Incorporated | Staggered pilot transmission for channel estimation and time tracking |
| US8027243B2 (en) * | 2004-06-25 | 2011-09-27 | Lg Electronics Inc. | Allocation of radio resource in orthogonal frequency division multiplexing system |
| JP4181093B2 (ja) * | 2004-07-16 | 2008-11-12 | 株式会社東芝 | 無線通信システム |
| US7693284B2 (en) * | 2004-09-23 | 2010-04-06 | Motorola, Inc. | Method and apparatus for encryption of over-the-air communications in a wireless communication system |
| CN100566317C (zh) * | 2004-10-22 | 2009-12-02 | 财团法人工业技术研究院 | 基于频率相关性的相干正交频分复用接收器同步方法与装置 |
| US20060088133A1 (en) * | 2004-10-22 | 2006-04-27 | Industrial Technology Research Institute | Time-frequency correlation-based synchronization for coherent OFDM receiver |
| KR100686046B1 (ko) | 2004-12-23 | 2007-02-23 | 엘지전자 주식회사 | 디지털 수신기의 채널 추정 장치 및 방법 |
| US7835264B2 (en) * | 2004-12-29 | 2010-11-16 | Mitsubishi Denki Kabushiki Kaisha | Interleaver, deinterleaver, communication device, and method for interleaving and deinterleaving |
| US7668269B2 (en) * | 2005-05-09 | 2010-02-23 | Ati Technologies, Inc. | Systems, methods, and apparatus for phase noise mitigation |
| EP1734711A1 (en) * | 2005-06-13 | 2006-12-20 | Alcatel | A method for OFDM symbol sequence adaptation avoiding neighbor subcarrier interference, a transmitter, a program module and a mobile network therefor |
| US7808883B2 (en) * | 2005-08-08 | 2010-10-05 | Nokia Corporation | Multicarrier modulation with enhanced frequency coding |
| JP4734080B2 (ja) * | 2005-10-12 | 2011-07-27 | 日本放送協会 | チャンネル推定補正を行うofdm受信装置 |
| JP4659154B2 (ja) * | 2006-01-18 | 2011-03-30 | 株式会社日立国際電気 | 通信装置 |
| CN101467407B (zh) * | 2006-04-27 | 2016-05-04 | 意大利电信股份公司 | 单一载波频分多址系统中的频域信道估计 |
| JP4946159B2 (ja) * | 2006-05-09 | 2012-06-06 | 富士通株式会社 | 無線送信方法及び無線受信方法並びに無線送信装置及び無線受信装置 |
| WO2008013398A1 (en) * | 2006-07-28 | 2008-01-31 | Samsung Electronics Co., Ltd. | Method and apparatus for positioning pilot in an ofdma mobile communication system |
| US7889799B2 (en) * | 2006-08-02 | 2011-02-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for OFDM channel estimation |
| EP1936894A1 (en) * | 2006-12-21 | 2008-06-25 | Fujitsu Ltd. | Pilot block-based channel estimation in a OFDM system |
| EP2198547B1 (en) * | 2007-09-28 | 2015-11-11 | Nokia Technologies Oy | Apparatuses and methods for improving signaling channel robustness |
| JP5169423B2 (ja) * | 2008-04-16 | 2013-03-27 | 富士通株式会社 | 移動局装置及び伝送路推定方法 |
| US8811339B2 (en) | 2008-07-07 | 2014-08-19 | Blackberry Limited | Handover schemes for wireless systems |
| JP5274210B2 (ja) * | 2008-11-13 | 2013-08-28 | 三菱電機株式会社 | Ofdm復調装置 |
| EP2192735A1 (en) | 2008-11-28 | 2010-06-02 | Sony Corporation | Receiving apparatus and method for receiving signals in a wireless communication system with improved equalization performance |
| KR20100073062A (ko) * | 2008-12-22 | 2010-07-01 | 한국전자통신연구원 | 주파수 오차 추정기 및 그것의 주파수 오차 추정 방법 |
| EP2214362B1 (en) * | 2009-02-02 | 2012-08-01 | Sony Corporation | Receiving apparatus with frequency domain equalizer |
| EP2226963B1 (en) | 2009-03-04 | 2013-05-08 | Sony Corporation | Receiving apparatus and method with non-oversampling analog to digital conversion |
| US8913566B1 (en) * | 2010-04-12 | 2014-12-16 | Sprint Spectrum L.P. | Using traffic channels to extend wireless coverage in poor pilot-signal conditions |
| CN102238109B (zh) * | 2010-04-22 | 2015-06-10 | 中兴通讯股份有限公司 | 一种信道估计方法及装置 |
| US9100228B2 (en) * | 2010-06-16 | 2015-08-04 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Long term evolution (LTE) uplink canonical channel estimation |
| US9571324B2 (en) | 2013-07-23 | 2017-02-14 | Intel IP Corporation | Method for improving spectral efficiency in Wi-Fi OFDM systems |
| EP3434055B1 (en) * | 2016-03-23 | 2023-05-10 | Nokia Technologies Oy | Common phase error and/or inter-carrier interference |
| CN110011734B (zh) * | 2019-04-18 | 2020-06-30 | 杭州电子科技大学 | 基于导频和二维投影直方图的co-ofdm系统中的cpe补偿方法 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519730A (en) * | 1990-06-12 | 1996-05-21 | Jasper; Steven C. | Communication signal having a time domain pilot component |
| JP3145003B2 (ja) * | 1995-03-23 | 2001-03-12 | 株式会社東芝 | 直交周波数分割多重伝送方式とその送信装置および受信装置 |
| FI99252C (fi) * | 1995-07-03 | 1997-12-29 | Nokia Mobile Phones Ltd | Yhdistetty radiosignaalin modulointi- ja monikäyttömenetelmä |
| FI101253B1 (fi) * | 1996-09-19 | 1998-05-15 | Nokia Telecommunications Oy | Signalointimenetelmä ja lähetin |
| WO1998019410A2 (en) * | 1996-10-31 | 1998-05-07 | Discovision Associates | Single chip vlsi implementation of a digital receiver employing orthogonal frequency division multiplexing |
| ATE384401T1 (de) * | 1997-05-02 | 2008-02-15 | Lsi Logic Corp | Demodulation von digitalen videorundfunksignalen |
| US6240146B1 (en) * | 1997-05-02 | 2001-05-29 | Lsi Logic Corporation | Demodulating digital video broadcast signals |
| US5867478A (en) * | 1997-06-20 | 1999-02-02 | Motorola, Inc. | Synchronous coherent orthogonal frequency division multiplexing system, method, software and device |
| CN1980213B (zh) * | 1997-07-01 | 2010-12-15 | 松下电器产业株式会社 | 接收方法、接收装置 |
| US6301237B1 (en) * | 1997-12-30 | 2001-10-09 | Matsushita Electric Industrial Co., Ltd. | CDMA radio multiplex transmitting device and a CDMA radio multiplex receiving device |
| EP0938208A1 (en) * | 1998-02-22 | 1999-08-25 | Sony International (Europe) GmbH | Multicarrier transmission, compatible with the existing GSM system |
| KR100314353B1 (ko) * | 1998-04-28 | 2001-12-28 | 전주범 | 직교분할대역수신시스템 |
| US6310926B1 (en) * | 1998-09-25 | 2001-10-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Adjustment of the sampling frequency in a multicarrier receiver |
| US6807147B1 (en) * | 1999-06-23 | 2004-10-19 | At&T Wireless Services, Inc. | Methods and apparatus for use in obtaining frame synchronization in an OFDM communication system |
| JP2001292122A (ja) * | 2000-04-07 | 2001-10-19 | Sony Corp | 復調装置及び復調方法 |
| US6424678B1 (en) * | 2000-08-01 | 2002-07-23 | Motorola, Inc. | Scalable pattern methodology for multi-carrier communication systems |
| US20020065047A1 (en) * | 2000-11-30 | 2002-05-30 | Moose Paul H. | Synchronization, channel estimation and pilot tone tracking system |
| US6549561B2 (en) * | 2001-02-21 | 2003-04-15 | Magis Networks, Inc. | OFDM pilot tone tracking for wireless LAN |
-
2000
- 2000-08-01 DE DE60028200T patent/DE60028200T2/de not_active Expired - Lifetime
- 2000-08-01 EP EP00116635A patent/EP1178640B1/en not_active Expired - Lifetime
-
2001
- 2001-07-30 US US09/919,040 patent/US7012882B2/en not_active Expired - Fee Related
- 2001-08-01 JP JP2001233990A patent/JP2002111620A/ja not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP1178640A1 (en) | 2002-02-06 |
| DE60028200D1 (de) | 2006-06-29 |
| EP1178640B1 (en) | 2006-05-24 |
| US7012882B2 (en) | 2006-03-14 |
| US20020034213A1 (en) | 2002-03-21 |
| JP2002111620A (ja) | 2002-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE60028200T2 (de) | Vorrichtung und Verfahren zur Kanalschätzung für OFDM-System | |
| DE60032593T2 (de) | Kanalschätzer für ein OFDM System | |
| DE69732478T2 (de) | Radiosystem und sende-/empfangsverfahren | |
| DE60121125T2 (de) | Strahlformungsschaltung und Vorrichtung sowie Verfahren zum Empfang von Funksignalen mittels einer intelligenten Antenne | |
| DE4447230C2 (de) | Modulationsverfahren, Demodulationsverfahren, Modulator und Demodulator sowie Verwendung von Modulator und Demodulator | |
| DE60000096T2 (de) | Frequenzsprungmehrfachzugriff mit Mehrträgersignalen | |
| DE60021524T2 (de) | OFDM Diversity-Übertragung | |
| DE69219297T2 (de) | Taktwiedergewinnungseinrichtung für Empfangsanlage mit adaptiver Entzerrung mittels Überabtastung zusammen mit differentieller kohärenter Demodulation | |
| DE69935619T2 (de) | Auf schätzung der leistungspektraldichte basierte festellung der datenrate | |
| DE69835623T2 (de) | Verfahren und einrichtung für richtfunkkommunikation | |
| DE69736659T2 (de) | Mehrträgerempfänger mit Ausgleich von Frequenzverschiebungen und von frequenzabhängigen Verzerrungen | |
| EP0336247B1 (de) | Verfahren und Vorrichtung zur digitalen Uebertragung von Nachrichten in Kurzwellenfunknetzen | |
| DE3713367A1 (de) | Kanalabschaetzung und -detektion in digitalen kommunikationssystemen | |
| DE19733336A1 (de) | Verfahren und Funkstation zur Datenübertragung | |
| DE112006001728T5 (de) | System und Verfahren zum Anpassen eines zyklischen Präfix in einem Orthogonalfrequenzmultiplex- (OFDM) System | |
| DE112016000449T5 (de) | Verfahren zum Schätzen eines nichtlinearen Selbstinterferenz-Signalkanals durch eine Vorrichtung unter Verwendung eines FDR-Schemas | |
| DE19733120A1 (de) | Verfahren und Funkstation zur Datenübertragung | |
| DE69723596T2 (de) | Kanalschätzung | |
| DE69224278T2 (de) | Verfahren zur Übertragung von Referenzsignalen in einem Mehrträgerdatenübertragungssystem | |
| EP0534399B1 (de) | Zeitmultiplex-Verfahren zur Bestimmung der mittleren Phasenänderung eines Empfangssignals | |
| DE60225173T2 (de) | Schätzen eines übertragungskanals mit in einer verbandstruktur verteilten pilotsymbolen | |
| DE69607211T2 (de) | Verfahren und gerät zur nebensignalunterdrückung in einer direktsequenzspreizspektrumverbindung | |
| EP1623547B1 (de) | Verfahren und Einrichtung für die drahtlose Mehrträgerkommunikation mit dynamischer Aufteilung der Frequenzbreite und Anzahl der Subbänder | |
| DE60031105T2 (de) | Verfahren und Vorrichtung zur Bereitstellung einen OFDM in der Aufwärtsrichtung mit Zeit-Frequenz-Verschachtelung | |
| DE60314933T2 (de) | Breitbandübertragung mit Frequenzanpassung abhängig von der Kanalschätzung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |