NO20034111L - Fremgangsmåte for frekvens- og tids-synkronisering av en OFDM- mottaker - Google Patents

Fremgangsmåte for frekvens- og tids-synkronisering av en OFDM- mottaker

Info

Publication number
NO20034111L
NO20034111L NO20034111A NO20034111A NO20034111L NO 20034111 L NO20034111 L NO 20034111L NO 20034111 A NO20034111 A NO 20034111A NO 20034111 A NO20034111 A NO 20034111A NO 20034111 L NO20034111 L NO 20034111L
Authority
NO
Norway
Prior art keywords
frequency
ofdm signal
determined
receiver
time
Prior art date
Application number
NO20034111A
Other languages
English (en)
Other versions
NO20034111D0 (no
NO339435B1 (no
Inventor
Rainer Bott
Guenter Wicker
Dimitri Korobkov
Original Assignee
Rohde & Schwarz
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rohde & Schwarz filed Critical Rohde & Schwarz
Publication of NO20034111D0 publication Critical patent/NO20034111D0/no
Publication of NO20034111L publication Critical patent/NO20034111L/no
Publication of NO339435B1 publication Critical patent/NO339435B1/no

Links

Classifications

    • 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
    • H04L27/2662—Symbol synchronisation
    • H04L27/2663—Coarse synchronisation, e.g. by correlation
    • 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
    • H04L27/2659—Coarse or integer frequency offset determination and 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
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and 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
    • H04L27/2662—Symbol synchronisation
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • 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
    • 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
    • H04L27/2676—Blind, i.e. without using known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Synchronizing For Television (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

Oppfinnelsen vedrører frekvens- og tidssynkronisering av en mottager (E) for å motta OFDM-signaler på en fast bærefrekvens. Fremgangsmåten ifølge oppfinnelsen er kjennetegnet ved å bestemme, i et første trinn, den tilnærmede, nominelle verdi av frekvensen og tidsutgangspunktet for OFDM-signaler via en todimensjonal, frekvens/tid søkemodus, og bestemmelsen av områdepunktet med det optimale kvalitetskriterium for OFDM-signalet, eller via evaluering av en synkroniseringssekvens overført av senderen. 1 et etterfølgende annet trinn, blir fasen til minst et av pilotsignalene som er overført sammen med OFDM-signalet bestemt i mottageren (E) og blir midlet over flere OFDM- signalblokker, og en mer nøyaktig nominell verdi av sekvensen og tidsutgangspunktet for OFDM-signalet blir bestemt fra dette. Mottageren (E) blir så synkronisert med frekvensen som er bestemt på denne måten, og OFDM-signalet blir demodulert med verdien av tidsutgangspunktet som er bestemt på denne måten.
NO20034111A 2001-03-16 2003-09-16 Fremgangsmåte for frekvens- og tids-synkronisering av en OFDM-mottaker NO339435B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10112773A DE10112773B4 (de) 2001-03-16 2001-03-16 Verfahren zur Frequenz- und Zeit-Synchronisation eines OFDM-Empfängers
PCT/EP2002/000906 WO2002076056A2 (de) 2001-03-16 2002-01-29 Verfahren zur frequenz- und zeit-synchronisation eines ofdm-empfängers

Publications (3)

Publication Number Publication Date
NO20034111D0 NO20034111D0 (no) 2003-09-16
NO20034111L true NO20034111L (no) 2003-11-17
NO339435B1 NO339435B1 (no) 2016-12-12

Family

ID=7677764

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20034111A NO339435B1 (no) 2001-03-16 2003-09-16 Fremgangsmåte for frekvens- og tids-synkronisering av en OFDM-mottaker

Country Status (13)

Country Link
US (1) US20050084023A1 (no)
EP (1) EP1368945B1 (no)
CN (1) CN1531808A (no)
AU (1) AU2002247663B2 (no)
BR (1) BR0208133A (no)
CZ (1) CZ304589B6 (no)
DE (1) DE10112773B4 (no)
ES (1) ES2640744T3 (no)
IL (2) IL157930A0 (no)
NO (1) NO339435B1 (no)
PT (1) PT1368945T (no)
WO (1) WO2002076056A2 (no)
ZA (1) ZA200306893B (no)

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DE10039902B4 (de) * 2000-08-16 2011-04-28 Rohde & Schwarz Gmbh & Co. Kg Verfahren zur Frequenz- und Zeit-Synchronisation eines Empfängers
DE10249413B4 (de) * 2002-10-23 2005-10-20 Rohde & Schwarz Verfahren zum Erfassen des Beginns eines aktiven Signalabschnitts
CN1635725B (zh) * 2003-12-31 2010-04-14 华为技术有限公司 一种正交频分复用系统中实现同步的方法
KR100587310B1 (ko) * 2004-08-18 2006-06-08 엘지전자 주식회사 주파수 동기 장치 및 이를 적용한 ｄｖｂ-ｈ 수신 시스템
US7639749B2 (en) * 2004-12-14 2009-12-29 Ittiam Systems (P) Ltd. System and method for improving the performance of OFDM systems
KR100899749B1 (ko) * 2005-01-13 2009-05-27 삼성전자주식회사 다중 입력 다중 출력 방식을 사용하는 직교 주파수 분할 다중 통신시스템에서 프리앰블 시퀀스 송수신 방법
BRPI0609150B1 (pt) 2005-03-02 2019-08-27 Rohde & Schwarz método e aparelho para a provisão a um receptor de um sinal digital correspondente a um serviço e sistema para a provisão de um serviço
US7573965B2 (en) 2005-12-12 2009-08-11 Sandbridge Technologies Inc. Kalman filter for channel estimation in OFDM systems
US8149817B2 (en) 2007-02-01 2012-04-03 Rohde & Schwarz Gmbh & Co. Kg Systems, apparatus, methods and computer program products for providing ATSC interoperability
DE102008017290A1 (de) 2007-12-11 2009-06-18 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Bildung eines gemeinsamen Datenstroms insbesondere nach dem ATSC-Standard
DE102007059959B4 (de) 2007-12-12 2020-01-02 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Übertragung von Daten zwischen einer zentralen Rundfunkstation und mindestens einem Sender
DE102008056703A1 (de) * 2008-07-04 2010-01-07 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Zeitsynchronisierung zwischen einer Zentrale und mehreren Sendern
US8355458B2 (en) 2008-06-25 2013-01-15 Rohde & Schwarz Gmbh & Co. Kg Apparatus, systems, methods and computer program products for producing a single frequency network for ATSC mobile / handheld services
DE102008059028B4 (de) 2008-10-02 2021-12-02 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Verfahren und Vorrichtung zur Erzeugung eines Transportdatenstroms mit Bilddaten
CA2731958C (en) 2008-11-06 2016-10-04 Rohde & Schwarz Gmbh & Co. Kg Method and system for synchronized mapping of data packets in an atsc data stream
CN101420411B (zh) * 2008-12-05 2011-02-09 航天恒星科技有限公司 低信噪比载波快速捕获方法
EP2234357B1 (en) 2009-03-21 2016-07-27 Rohde & Schwarz GmbH & Co. KG Method for improving the data rate of mobile data and the quality of channel estimation in an ATSC-M/H transport data stream
DE102009025219A1 (de) 2009-04-07 2010-10-14 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur kontinuierlichen Anpassung von Kodierungsparametern an eine veränderliche Nutzdatenrate
DE102009057363B4 (de) 2009-10-16 2013-04-18 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur effizienten Übertragung von überregional und regional auszustrahlenden Programm-und Servicedaten
US8989021B2 (en) 2011-01-20 2015-03-24 Rohde & Schwarz Gmbh & Co. Kg Universal broadband broadcasting

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GB9020170D0 (en) * 1990-09-14 1990-10-24 Indep Broadcasting Authority Orthogonal frequency division multiplexing
DE4319769C1 (de) * 1993-06-15 1994-07-14 Grundig Emv Verfahren und Anordnung zur Einstellung der lokalen Oszillatoren eines Empfängers in einem Mehrkanalübertragungssystem
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DE19903367A1 (de) * 1999-01-28 2000-08-17 Siemens Ag Verfahren zum Synchronisieren von Sender und Empfänger bei einer Datenübertragung mit einem Mehrträgerfrequenzverfahren über Energieversorgungsleitungen
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KR100335443B1 (ko) * 1999-06-15 2002-05-04 윤종용 직교주파수분할다중변조 신호의 심볼 타이밍 및 주파수 동기 장치 및 방법
KR100362571B1 (ko) * 1999-07-05 2002-11-27 삼성전자 주식회사 직교주파수분할다중 시스템에서 파일럿 심볼을 이용한 주파수 오류 보상장치 및 방법

Also Published As

Publication number Publication date
CZ20032495A3 (en) 2004-04-14
EP1368945A2 (de) 2003-12-10
BR0208133A (pt) 2004-03-02
NO20034111D0 (no) 2003-09-16
WO2002076056A2 (de) 2002-09-26
DE10112773B4 (de) 2012-09-20
CZ304589B6 (cs) 2014-07-23
NO339435B1 (no) 2016-12-12
CN1531808A (zh) 2004-09-22
ES2640744T3 (es) 2017-11-06
IL157930A (en) 2009-08-03
EP1368945B1 (de) 2017-08-02
PT1368945T (pt) 2017-11-14
IL157930A0 (en) 2004-03-28
WO2002076056A3 (de) 2003-01-09
AU2002247663B2 (en) 2007-01-04
US20050084023A1 (en) 2005-04-21
DE10112773A1 (de) 2002-09-26
ZA200306893B (en) 2004-09-03

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