NO990770L - Multi-bµrer transmisjonssystem, mottaker, transceiver og fremgangsmÕte for samme - Google Patents

Multi-bµrer transmisjonssystem, mottaker, transceiver og fremgangsmÕte for samme

Info

Publication number
NO990770L
NO990770L NO990770A NO990770A NO990770L NO 990770 L NO990770 L NO 990770L NO 990770 A NO990770 A NO 990770A NO 990770 A NO990770 A NO 990770A NO 990770 L NO990770 L NO 990770L
Authority
NO
Norway
Prior art keywords
carrier
pilot carrier
receiver
transmission system
pilot
Prior art date
Application number
NO990770A
Other languages
English (en)
Other versions
NO990770D0 (no
Inventor
Mikael Isaksson
Magnus Johansson
Harry Tonvall
Lennart Olsson
Tomas Stefansson
Hans Ihman
Gunnar Bahlenberg
Anders Isaksson
G Ran Ikvist
Lis-Marie Ljunggren
M Tomas Nordstr
Lars-Ke Isaksson
Daniel Bengtsson
Siwert Hokansson
Ye Wen
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
Priority claimed from SE9603190A external-priority patent/SE506637C2/sv
Application filed by Telia Ab filed Critical Telia Ab
Publication of NO990770D0 publication Critical patent/NO990770D0/no
Publication of NO990770L publication Critical patent/NO990770L/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
    • H04L27/2657—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
    • 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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Seal Device For Vehicle (AREA)
  • Telephonic Communication Services (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Modem-multibærer transmisjonssystemer, som anvender ortogor.ale borere med høyere ordens QAM-konstellasjoner for overføring av multiple bits per bærer og symbol, stiller store krav til synkroniseringen av mottakeren med senderen. Det maksimale tillatte avvik fra eksakt synkronisering er vanligvis en liten fraksjon av et samplingsintervall. En reservert bærer, pilotbæreren, som er gitt en bestemt fase, anvendes vanligvis som referansen for å oppnå denne høye nøyaktighet. Mottaker-samplingsklokkeoscillatoren er fase- låst til pilotbæreren. Det er derfor nødvendig å estimere fasen av pilotbæreren. Anvendelse av båndpassfilter for å gjenvinne pilotbæreren uavhengig av rammestrukturen av DMT- signalet vil ikke eliminere påvirkningen av nabobærere på pilotbæreren.
NO990770A 1996-09-02 1999-02-19 Multi-bµrer transmisjonssystem, mottaker, transceiver og fremgangsmÕte for samme NO990770L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9603190A SE506637C2 (sv) 1996-05-24 1996-09-02 Förbättringar av, eller med avseende på, multibärvågssystem
PCT/SE1997/001453 WO1998010548A2 (en) 1996-09-02 1997-09-01 Improvements in, or relating to, multi-carrier transmission systems

Publications (2)

Publication Number Publication Date
NO990770D0 NO990770D0 (no) 1999-02-19
NO990770L true NO990770L (no) 1999-04-29

Family

ID=20403748

Family Applications (1)

Application Number Title Priority Date Filing Date
NO990770A NO990770L (no) 1996-09-02 1999-02-19 Multi-bµrer transmisjonssystem, mottaker, transceiver og fremgangsmÕte for samme

Country Status (7)

Country Link
US (1) US6493395B1 (no)
EP (1) EP0920756B1 (no)
JP (1) JP4130994B2 (no)
AT (1) ATE233451T1 (no)
DE (1) DE69719333T2 (no)
NO (1) NO990770L (no)
WO (1) WO1998010548A2 (no)

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JP3186665B2 (ja) * 1997-09-19 2001-07-11 三菱電機株式会社 位相推定回路および復調回路
GB9901491D0 (en) * 1999-01-22 1999-03-17 Univ Bristol Receiver
JP2000269919A (ja) * 1999-03-16 2000-09-29 Matsushita Electric Ind Co Ltd Ｏｆｄｍ通信装置
SE521513C2 (sv) * 1999-06-04 2003-11-11 Ericsson Telefon Ab L M Förfarande och anordning i ett flertonstransmissionssystem
US7039139B1 (en) * 1999-07-21 2006-05-02 Honeywell International Inc. System for increasing digital data demodulator synchronization timing resolution using training sequence correlation values
US6654431B1 (en) 1999-09-15 2003-11-25 Telcordia Technologies, Inc. Multicarrier personal access communication system
JP2001103033A (ja) * 1999-09-30 2001-04-13 Hitachi Denshi Ltd データ伝送装置
US7012982B1 (en) * 1999-11-24 2006-03-14 Verizon Laboratories Inc. Method and system for de-jittering of transmitted MPEG-2 and MPEG-4 video
US7787525B1 (en) * 1999-12-24 2010-08-31 Schlumberger Technology Corporation Method and apparatus for transmission of well-bore data on multiple carrier frequencies
ATE343879T1 (de) 2000-01-07 2006-11-15 Aware Inc Diagnostische verfahren und systeme für mehrträgermodems
US6788349B2 (en) * 2000-04-12 2004-09-07 Her Majesty Of Queen In Right Of Canada, As Respresented By The Minister Of Industry Method and system for broadcasting a digital data signal within an analog TV signal using Orthogonal Frequency Division Multiplexing
CA2406151C (en) 2000-04-18 2010-04-13 Aware, Inc. Data allocation with variable snr margins
EP1162803A1 (en) * 2000-06-05 2001-12-12 Telefonaktiebolaget L M Ericsson (Publ) Frequency tracking device and method for a receiver of a multi-carrier communication system
EP1162777A1 (en) * 2000-06-07 2001-12-12 Alcatel Multi-carrier comunication system with sample rate pilot carrier and time division duplexing frame rate pilot carrier
US6831975B1 (en) 2000-09-13 2004-12-14 Texas Instruments Incorporated Digital subscriber line (DSL) modem compatible with home networks
US7111030B2 (en) 2000-12-20 2006-09-19 Nokia Corporation Method of detecting pilot tones in a noisy signal
US6914952B2 (en) * 2001-01-19 2005-07-05 3Com Corporation Superframe alignment to a pre-existing ADSL data exchange
US7020095B2 (en) * 2001-06-16 2006-03-28 Maxim Integrated Products, Inc. System and method for modulation of non-data bearing carriers in a multi-carrier modulation system
US7436881B2 (en) * 2001-09-28 2008-10-14 Nec Corporation Per-bin DFE for advanced OQAM-based multi-carrier wireless data transmission systems
US7116745B2 (en) * 2002-04-17 2006-10-03 Intellon Corporation Block oriented digital communication system and method
US7653021B2 (en) * 2002-09-27 2010-01-26 Telefonaktiebolaget Lm Ericsson (Publ0 Evaluating orthogonal codes transmitted in a wireless communications network
EP1434414B1 (en) * 2002-12-27 2013-11-20 Koninklijke KPN N.V. System for measuring the effect of an ADSL splitter on an ISDN network
WO2004079927A2 (en) 2003-03-03 2004-09-16 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
US7042967B2 (en) 2003-03-03 2006-05-09 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
US7502336B2 (en) * 2004-06-30 2009-03-10 2Wire, Inc. Multi-carrier communication using adaptive tone-pruning
WO2006042274A1 (en) 2004-10-11 2006-04-20 2Wire, Inc. Periodic impulse noise mitigation in a dsl system
US7953163B2 (en) 2004-11-30 2011-05-31 Broadcom Corporation Block linear equalization in a multicarrier communication system
TWI286015B (en) * 2005-01-24 2007-08-21 Realtek Semiconductor Corp Apparatus and method for tracking sampling clock in multi-carrier communication system
US7489755B2 (en) * 2005-02-09 2009-02-10 Motorola, Inc. Method and apparatus for transmission and reception of data
US7852950B2 (en) 2005-02-25 2010-12-14 Broadcom Corporation Methods and apparatuses for canceling correlated noise in a multi-carrier communication system
US9374257B2 (en) 2005-03-18 2016-06-21 Broadcom Corporation Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems
US7813439B2 (en) 2006-02-06 2010-10-12 Broadcom Corporation Various methods and apparatuses for impulse noise detection
US7613104B2 (en) * 2006-05-31 2009-11-03 Nokia Corporation Method, apparatus and computer program product providing synchronization for OFDMA downlink signal
US8139680B2 (en) * 2007-01-12 2012-03-20 General Dynamics C4 Systems, Inc. Signal acquisition methods and apparatus in wireless communication systems
US7907679B2 (en) 2007-01-12 2011-03-15 General Dynamics C4 Systems, Inc. Methods and systems for acquiring signals using coherent match filtering
US8605837B2 (en) 2008-10-10 2013-12-10 Broadcom Corporation Adaptive frequency-domain reference noise canceller for multicarrier communications systems
CN102187634B (zh) 2008-10-20 2014-01-22 汤姆逊许可公司 用于生成在电缆传输系统中使用的前导信号的方法和设备

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SE9302453L (sv) 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
JPH0746218A (ja) * 1993-07-28 1995-02-14 Sony Corp ディジタル復調装置
JP3074103B2 (ja) * 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
DE69720225D1 (de) * 1996-09-02 2003-04-30 St Microelectronics Nv Verbesserungen bei, oder in bezug auf mehrträgerübertragungssysteme

Also Published As

Publication number Publication date
JP2000517507A (ja) 2000-12-26
DE69719333D1 (de) 2003-04-03
EP0920756B1 (en) 2003-02-26
WO1998010548A2 (en) 1998-03-12
US6493395B1 (en) 2002-12-10
WO1998010548A3 (en) 1998-06-04
ATE233451T1 (de) 2003-03-15
JP4130994B2 (ja) 2008-08-13
NO990770D0 (no) 1999-02-19
DE69719333T2 (de) 2003-12-04
EP0920756A2 (en) 1999-06-09

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