SE9400116L - Förfarande och arrangemang för synkronisering vid OFDM- modulering - Google Patents

Förfarande och arrangemang för synkronisering vid OFDM- modulering

Info

Publication number
SE9400116L
SE9400116L SE9400116A SE9400116A SE9400116L SE 9400116 L SE9400116 L SE 9400116L SE 9400116 A SE9400116 A SE 9400116A SE 9400116 A SE9400116 A SE 9400116A SE 9400116 L SE9400116 L SE 9400116L
Authority
SE
Sweden
Prior art keywords
clock
pct
errors
deviation
sampling clock
Prior art date
Application number
SE9400116A
Other languages
Unknown language ( )
English (en)
Other versions
SE9400116D0 (sv
SE501608C2 (sv
Inventor
Mikael Isaksson
Original Assignee
Telia Ab
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 Telia Ab filed Critical Telia Ab
Priority to SE9400116A priority Critical patent/SE9400116L/sv
Publication of SE9400116D0 publication Critical patent/SE9400116D0/sv
Priority to DK95907163T priority patent/DK0740868T3/da
Priority to EP95907163A priority patent/EP0740868B1/en
Priority to DE69430387T priority patent/DE69430387T2/de
Priority to US08/669,379 priority patent/US5726973A/en
Priority to PCT/SE1994/001266 priority patent/WO1995019671A1/en
Publication of SE501608C2 publication Critical patent/SE501608C2/sv
Publication of SE9400116L publication Critical patent/SE9400116L/sv

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
    • H04L27/2665—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
    • H04L27/2657—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
    • H04L27/2662—Symbol synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
SE9400116A 1994-01-18 1994-01-18 Förfarande och arrangemang för synkronisering vid OFDM- modulering SE9400116L (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9400116A SE9400116L (sv) 1994-01-18 1994-01-18 Förfarande och arrangemang för synkronisering vid OFDM- modulering
DK95907163T DK0740868T3 (da) 1994-01-18 1994-12-30 Fremgangsmåde og indretning til synkronisering ved OFDM-modulering
EP95907163A EP0740868B1 (en) 1994-01-18 1994-12-30 Method and arrangement for synchronization in ofdm modulation
DE69430387T DE69430387T2 (de) 1994-01-18 1994-12-30 Verfahren und einrichtung zur synchronisierung bei ofdm-modulation
US08/669,379 US5726973A (en) 1994-01-18 1994-12-30 Method and arrangement for synchronization in OFDM modulation
PCT/SE1994/001266 WO1995019671A1 (en) 1994-01-18 1994-12-30 Method and arrangement for synchronization in ofdm modulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9400116A SE9400116L (sv) 1994-01-18 1994-01-18 Förfarande och arrangemang för synkronisering vid OFDM- modulering

Publications (3)

Publication Number Publication Date
SE9400116D0 SE9400116D0 (sv) 1994-01-18
SE501608C2 SE501608C2 (sv) 1995-03-27
SE9400116L true SE9400116L (sv) 1995-03-27

Family

ID=20392588

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9400116A SE9400116L (sv) 1994-01-18 1994-01-18 Förfarande och arrangemang för synkronisering vid OFDM- modulering

Country Status (6)

Country Link
US (1) US5726973A (sv)
EP (1) EP0740868B1 (sv)
DE (1) DE69430387T2 (sv)
DK (1) DK0740868T3 (sv)
SE (1) SE9400116L (sv)
WO (1) WO1995019671A1 (sv)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6334219B1 (en) * 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
US5682376A (en) * 1994-12-20 1997-10-28 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
DE19534462C2 (de) * 1995-09-16 1999-08-26 Temic Semiconductor Gmbh Übertragungsverfahren
JPH09130362A (ja) * 1995-10-30 1997-05-16 Sony Corp 受信装置および受信方法
US5802117A (en) * 1996-02-08 1998-09-01 Philips Electronics North America Corporation Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
WO1997041672A1 (en) * 1996-04-29 1997-11-06 Philips Electronics N.V. Symbol synchronisation in a multicarrier receiver
JP3511798B2 (ja) * 1996-05-08 2004-03-29 三菱電機株式会社 ディジタル放送受信機
JPH09307526A (ja) * 1996-05-17 1997-11-28 Mitsubishi Electric Corp デジタル放送受信機
GB9614712D0 (en) * 1996-07-12 1996-09-04 Roke Manor Research Improvements in or relating to radio receivers
KR100221336B1 (ko) * 1996-12-28 1999-09-15 전주범 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법
KR100230271B1 (ko) * 1997-01-10 1999-11-15 윤종용 Ofdm 시스템 수신기의 미세 fft 윈도우 위치 복원장치
SE517930C2 (sv) 1997-01-31 2002-08-06 Ericsson Telefon Ab L M Förfarande och anordning för initial synkronisering i ett kommunikationssystem
EP0859494A3 (en) * 1997-02-17 2000-08-23 Matsushita Electric Industrial Co., Ltd. Synchronisation of the local oscillator in multicarrier systems
KR100238047B1 (ko) * 1997-02-25 2000-01-15 윤종용 직교 주파수분할 다중화 전송시스템의 반송파 주파수 동기 방법 및 동기 장치
SE9703629L (sv) * 1997-03-03 1998-09-04 Telia Ab Förbättringar av, eller med avseende på, synkronisering
GB2326069B (en) * 1997-05-02 2002-06-19 Lsi Logic Corp Demodulating digital video broadcast signals
JP3797397B2 (ja) 1997-05-02 2006-07-19 ソニー株式会社 受信装置および受信方法
US5867478A (en) * 1997-06-20 1999-02-02 Motorola, Inc. Synchronous coherent orthogonal frequency division multiplexing system, method, software and device
DE19733825A1 (de) * 1997-08-05 1999-02-11 Siemens Ag Verfahren und Anordnung zur kombinierten Messung des Anfangs eines Datenblocks und des Trägerfrequenzversatzes in einem Mehrträgerübertragungssystem für unregelmäßige Übertragung von Datenblöcken
DE19742670B4 (de) * 1997-09-26 2011-08-11 Telefonaktiebolaget Lm Ericsson (Publ) Verfahren, Empfänger und Mehrträger-QAM-System zur Demodulation eines analogen Mehrträger-QAM-Signals
US6618352B1 (en) 1998-05-26 2003-09-09 Matsushita Electric Industrial Co., Ltd. Modulator, demodulator, and transmission system for use in OFDM transmission
US6310926B1 (en) 1998-09-25 2001-10-30 Telefonaktiebolaget Lm Ericsson (Publ) Adjustment of the sampling frequency in a multicarrier receiver
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
DE69942222D1 (de) * 1999-02-11 2010-05-20 Motorola Inc Schätzung von Träger- und Abtastungsfrequenzverschiebungen in Mehrträgerempfängern
FR2790344B1 (fr) * 1999-02-26 2001-05-18 St Microelectronics Sa Demodulateur cofdm avec compensation de deplacement de fenetre d'analyse fft
US6269132B1 (en) 1999-04-26 2001-07-31 Intellon Corporation Windowing function for maintaining orthogonality of channels in the reception of OFDM symbols
US6074086A (en) * 1999-04-26 2000-06-13 Intellon Corporation Synchronization of OFDM signals with improved windowing
US6505037B1 (en) * 1999-06-29 2003-01-07 Sharp Laboratories Of America, Inc. Data unit detection including antenna diversity
US6859504B1 (en) 1999-06-29 2005-02-22 Sharp Laboratories Of America, Inc. Rapid settling automatic gain control with minimal signal distortion
US6631143B1 (en) * 1999-11-12 2003-10-07 Lucent Technologies Inc. Methods and apparatus for frame synchronization in a digital audio broadcasting system
US7020074B1 (en) * 2000-04-03 2006-03-28 Nortel Networks Limited Synchronization method and apparatus for frequency division multiplexed telecommunication systems
CA2352398C (en) * 2000-07-06 2005-07-26 Unique Broadband Systems, Inc. Low phase noise frequency converter
US7177372B2 (en) * 2000-12-21 2007-02-13 Jian Gu Method and apparatus to remove effects of I-Q imbalances of quadrature modulators and demodulators in a multi-carrier system
FR2821216B1 (fr) * 2001-02-20 2003-10-24 Sagem Procede de synchronisation d'un signal d'horloge avec un signal de reference
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7218691B1 (en) 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
DE10208650A1 (de) * 2001-03-15 2002-09-19 Bosch Gmbh Robert Verfahren und Vorrichtung zur Synchronisation wenigstens eines Teilnehmers eines Bussystems und Bussystem
WO2003003235A1 (en) 2001-06-27 2003-01-09 4 Media, Inc. Improved media delivery platform
KR100441501B1 (ko) * 2002-01-17 2004-07-23 삼성전자주식회사 오에프디엠수신기의 심볼 타이밍 복원장치 및 방법
KR100406975B1 (ko) * 2002-01-29 2003-11-28 삼성전자주식회사 오에프디엠수신기의 심볼 타이밍 복원장치 및 방법
US7020226B1 (en) * 2002-04-04 2006-03-28 Nortel Networks Limited I/Q distortion compensation for the reception of OFDM signals
US7224666B2 (en) 2002-05-13 2007-05-29 Texas Instruments Incorporated Estimating frequency offsets using pilot tones in an OFDM system
KR100500404B1 (ko) * 2002-11-06 2005-07-12 (주)실리콘바인 샘플링 클럭 복원을 위한 클럭 오차 검출 방법과 그 방법을 채용한 오에프디엠 수신기
JP2005197968A (ja) * 2004-01-06 2005-07-21 Fujitsu Ltd 信号処理回路並びに直交復調装置およびその誤差推定方法
TW201141144A (en) * 2009-11-16 2011-11-16 Maxlinear Inc Apparatus and methods for symbol timing error detection, tracking and correction
US10944535B2 (en) 2019-05-29 2021-03-09 Shure Acquisition Holdings, Inc. OFDMA baseband clock synchronization

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9020170D0 (en) * 1990-09-14 1990-10-24 Indep Broadcasting Authority Orthogonal frequency division multiplexing
US5206886A (en) * 1990-04-16 1993-04-27 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
FR2670062B1 (fr) * 1990-11-30 1993-11-12 Thomson Csf Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede.
JP3041175B2 (ja) * 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
JP3074103B2 (ja) * 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路

Also Published As

Publication number Publication date
SE9400116D0 (sv) 1994-01-18
EP0740868A1 (en) 1996-11-06
SE501608C2 (sv) 1995-03-27
EP0740868B1 (en) 2002-04-10
DE69430387D1 (de) 2002-05-16
WO1995019671A1 (en) 1995-07-20
DE69430387T2 (de) 2002-12-12
US5726973A (en) 1998-03-10
DK0740868T3 (da) 2002-07-22

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