FI20002670L - Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi - Google Patents

Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi Download PDF

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Publication number
FI20002670L
FI20002670L FI20002670A FI20002670A FI20002670L FI 20002670 L FI20002670 L FI 20002670L FI 20002670 A FI20002670 A FI 20002670A FI 20002670 A FI20002670 A FI 20002670A FI 20002670 L FI20002670 L FI 20002670L
Authority
FI
Finland
Prior art keywords
qam
improving
quality
modem connection
receiver synchronization
Prior art date
Application number
FI20002670A
Other languages
English (en)
Swedish (sv)
Other versions
FI112306B (fi
FI20002670A0 (fi
Inventor
Heikki Laamanen
Janne Vaeaenaenen
Original Assignee
Tellabs Oy
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 Tellabs Oy filed Critical Tellabs Oy
Priority to FI20002670A priority Critical patent/FI112306B/fi
Publication of FI20002670A0 publication Critical patent/FI20002670A0/fi
Priority to EP01270046A priority patent/EP1340348B1/en
Priority to DE60131097T priority patent/DE60131097T2/de
Priority to AT01270046T priority patent/ATE376740T1/de
Priority to PCT/FI2001/001060 priority patent/WO2002047346A1/en
Priority to US10/433,402 priority patent/US7359467B2/en
Priority to AU2002216142A priority patent/AU2002216142A1/en
Publication of FI20002670L publication Critical patent/FI20002670L/fi
Application granted granted Critical
Publication of FI112306B publication Critical patent/FI112306B/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0038—Correction of carrier offset using an equaliser
    • H04L2027/004—Correction of carrier offset using an equaliser the equaliser providing control signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FI20002670A 2000-12-05 2000-12-05 Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi FI112306B (fi)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI20002670A FI112306B (fi) 2000-12-05 2000-12-05 Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi
EP01270046A EP1340348B1 (en) 2000-12-05 2001-12-05 Method and apparatus for increasing the quality of the receiver synchronization of qam or cap modulated modem connection
DE60131097T DE60131097T2 (de) 2000-12-05 2001-12-05 Verfahren und vorrichtung zur erhöhung der qualität der empfängersynchronisierung einer qam- oder cap-modulierten modemverbindung
AT01270046T ATE376740T1 (de) 2000-12-05 2001-12-05 Verfahren und vorrichtung zur erhöhung der qualität der empfängersynchronisierung einer qam- oder cap-modulierten modemverbindung
PCT/FI2001/001060 WO2002047346A1 (en) 2000-12-05 2001-12-05 Method and apparatus for increasing the quality of the receiver synchronization of qam or cap modulated modem connection
US10/433,402 US7359467B2 (en) 2000-12-05 2001-12-05 Method and apparatus for increasing the quality of the receiver synchronization of QAM or CAP modulated modem connection
AU2002216142A AU2002216142A1 (en) 2000-12-05 2001-12-05 Method and apparatus for increasing the quality of the receiver synchronization of qam or cap modulated modem connection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002670 2000-12-05
FI20002670A FI112306B (fi) 2000-12-05 2000-12-05 Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi

Publications (3)

Publication Number Publication Date
FI20002670A0 FI20002670A0 (fi) 2000-12-05
FI20002670L true FI20002670L (fi) 2002-06-06
FI112306B FI112306B (fi) 2003-11-14

Family

ID=8559652

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20002670A FI112306B (fi) 2000-12-05 2000-12-05 Menetelmä ja laitteisto QAM- tai CAP-moduloidun modeemiyhteyden vastaanotinsynkronoinnin laadun parantamiseksi

Country Status (7)

Country Link
US (1) US7359467B2 (fi)
EP (1) EP1340348B1 (fi)
AT (1) ATE376740T1 (fi)
AU (1) AU2002216142A1 (fi)
DE (1) DE60131097T2 (fi)
FI (1) FI112306B (fi)
WO (1) WO2002047346A1 (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7447261B2 (en) * 2003-07-08 2008-11-04 Conexant Systems, Inc. Adaptive frequency equalizer
RU2350031C1 (ru) * 2007-07-04 2009-03-20 Игорь Борисович Дунаев Способ передачи и приема сигналов квадратурной амплитудной модуляции, система для его осуществления, машиночитаемый носитель и применение способа для синхронизации приема сигналов квадратурной амплитудной модуляции
JP2009088793A (ja) * 2007-09-28 2009-04-23 Fujitsu Ltd 同期用システム、同期信号送信装置、クロック供給装置、及び同期方法
CN102523017B (zh) * 2011-12-01 2014-01-01 清华大学 一种单载波超宽带接收机芯片
WO2021108762A1 (en) 2019-11-27 2021-06-03 Faraidoon Pundole Remote device telemetry and communication

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08139782A (ja) * 1994-11-11 1996-05-31 Fujitsu Ltd 搬送波再生回路
US5550596A (en) * 1994-11-25 1996-08-27 Thomson Multimedia Sa Digital television signal processing system including a co-channel rejection filter
US6021167A (en) * 1996-05-09 2000-02-01 Texas Instruments Incorporated Fast equalizer training and frame synchronization algorithms for discrete multi-tone (DMT) system
JPH1056487A (ja) * 1996-08-09 1998-02-24 Nec Corp 直交復調回路
US5878088A (en) * 1997-04-10 1999-03-02 Thomson Consumer Electronics, Inc. Digital variable symbol timing recovery system for QAM
US6904110B2 (en) * 1997-07-31 2005-06-07 Francois Trans Channel equalization system and method
SE9801748L (sv) * 1998-05-18 1999-11-19 Telia Ab Förbättringar i eller som hänför sig till telekommunikationsöverföringssystem
US6259743B1 (en) * 1998-07-02 2001-07-10 Lucent Technologies Inc. Automatic constellation phase recovery in blind start-up of a dual mode CAP-QAM receiver
EP1063824B1 (en) 1999-06-22 2006-08-02 Matsushita Electric Industrial Co., Ltd. Symbol synchronisation in multicarrier receivers
US20040246891A1 (en) * 1999-07-23 2004-12-09 Hughes Electronics Corporation Air interface frame formatting
US6836507B1 (en) * 2000-08-14 2004-12-28 General Dynamics Decision Systems, Inc. Symbol synchronizer for software defined communications system signal combiner

Also Published As

Publication number Publication date
FI112306B (fi) 2003-11-14
EP1340348A1 (en) 2003-09-03
DE60131097D1 (de) 2007-12-06
DE60131097T2 (de) 2008-08-07
AU2002216142A1 (en) 2002-06-18
FI20002670A0 (fi) 2000-12-05
US20040022328A1 (en) 2004-02-05
WO2002047346A1 (en) 2002-06-13
EP1340348B1 (en) 2007-10-24
ATE376740T1 (de) 2007-11-15
US7359467B2 (en) 2008-04-15

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