NO990776L - Multibµrer transmisjonssystem som anvender ortogonale bµrere, og en fremgangsmÕte for Õ bestemme en konstellasjon for hver bµrer - Google Patents

Multibµrer transmisjonssystem som anvender ortogonale bµrere, og en fremgangsmÕte for Õ bestemme en konstellasjon for hver bµrer

Info

Publication number
NO990776L
NO990776L NO990776A NO990776A NO990776L NO 990776 L NO990776 L NO 990776L NO 990776 A NO990776 A NO 990776A NO 990776 A NO990776 A NO 990776A NO 990776 L NO990776 L NO 990776L
Authority
NO
Norway
Prior art keywords
carrier
parameter
constellation
detection unit
symbol detection
Prior art date
Application number
NO990776A
Other languages
English (en)
Other versions
NO990776D0 (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 SE9603196A external-priority patent/SE506643C2/sv
Application filed by Telia Ab filed Critical Telia Ab
Publication of NO990776D0 publication Critical patent/NO990776D0/no
Publication of NO990776L publication Critical patent/NO990776L/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H04L5/0046—Determination of the number of bits transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephonic Communication Services (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Error Detection And Correction (AREA)

Abstract

Foreliggende oppfinnelse tilveibringer et multibærer transmisjonssystem, for eksempel et DMT-basert VDSL-system, som anvender ortogonale bærere av høyere ordens QAM- konstellasjoner for overføring av multiple bits per bærer og symbol, idet systemet inkluderer digitale mottaker og senderenheter, idet mottakerenheten inkluderer en symbol- detekteringsenhet, kjennetegnet ved at systemet er til- passet for å bestemme en parameter for hver enkelt bærer, idet parameteren er indikativ for et avvik av et mottatt symbol fra et korresponderende konstellasjonspunkt, sammen- ligne parameteren med en øvre og en nedre grense, og dersom parameteren er på utsiden av denne grense, forandre konstellasjonen anvendt for å modulere bæreren til en nabokonstellasjon. Symboldeteksjonsenheten kan anvendes for å bestemme parameteren skom kan ha et forhold på d2/a2, hvor d er den korteste avstand mellom nabokonstellasjoner, a er et standardavvik, og a2 er variansen av avvikene av ingangs- og utgangssignalverdiene for nevnte symboldeteksjonsenhet.
NO990776A 1996-09-02 1999-02-19 Multibµrer transmisjonssystem som anvender ortogonale bµrere, og en fremgangsmÕte for Õ bestemme en konstellasjon for hver bµrer NO990776L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9603196A SE506643C2 (sv) 1996-05-24 1996-09-02 Förbättringar av, eller med avseende på, multibärvågssystem
PCT/SE1997/001459 WO1998010554A2 (en) 1996-09-02 1997-09-01 Improvements in, or relating to, multi-carrier transmission systems

Publications (2)

Publication Number Publication Date
NO990776D0 NO990776D0 (no) 1999-02-19
NO990776L true NO990776L (no) 1999-04-30

Family

ID=20403754

Family Applications (1)

Application Number Title Priority Date Filing Date
NO990776A NO990776L (no) 1996-09-02 1999-02-19 Multibµrer transmisjonssystem som anvender ortogonale bµrere, og en fremgangsmÕte for Õ bestemme en konstellasjon for hver bµrer

Country Status (7)

Country Link
US (1) US6438174B1 (no)
EP (1) EP0922345B1 (no)
JP (1) JP4016126B2 (no)
AT (1) ATE228286T1 (no)
DE (1) DE69717285T2 (no)
NO (1) NO990776L (no)
WO (1) WO1998010554A2 (no)

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US7103065B1 (en) 1998-10-30 2006-09-05 Broadcom Corporation Data packet fragmentation in a cable modem system
US6961314B1 (en) 1998-10-30 2005-11-01 Broadcom Corporation Burst receiver for cable modem system
US6819760B1 (en) * 1999-06-21 2004-11-16 Advanced Micro Devices, Inc. Adaptive energy detector gain control in physical layer transceiver for home telephone wire network
US7110923B2 (en) * 1999-11-04 2006-09-19 Verticalband, Limited Fast, blind equalization techniques using reliable symbols
US7085691B2 (en) * 1999-11-04 2006-08-01 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
US7143013B2 (en) * 1999-11-04 2006-11-28 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
AU2108301A (en) 1999-12-16 2001-06-25 Aware, Inc. Bit allocation method in a multicarrier system
ATE516635T1 (de) 2000-01-07 2011-07-15 Aware Inc Diagnostisches verfahren und sender/empfänger 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
AU2001257081A1 (en) 2000-04-18 2001-10-30 Aware, Inc. Data allocation with variable SNR margins
WO2001082543A2 (en) * 2000-04-22 2001-11-01 Atheros Communications, Inc. Multi-carrier communication systems employing variable ofdm-symbol rates and number of carriers
US7295623B2 (en) * 2001-07-11 2007-11-13 Vativ Technologies, Inc. High-speed communications transceiver
US20030112896A1 (en) * 2001-07-11 2003-06-19 Raghavan Sreen A. Multi-channel communications transceiver
US7236757B2 (en) * 2001-07-11 2007-06-26 Vativ Technologies, Inc. High-speed multi-channel communications transceiver with inter-channel interference filter
FR2844408B1 (fr) * 2002-09-09 2004-11-26 Canon Kk Procedes et dispositifs d'emission et de reception avec ajustement dynamique de la bande passante du canal radio
US20040120482A1 (en) * 2002-12-20 2004-06-24 Bentley Ronald Locker System and method for reducing disruption in a DSL environment caused by a pots transient event
US7042967B2 (en) * 2003-03-03 2006-05-09 Interdigital Technology Corporation Reduced complexity sliding window based equalizer
JP4448847B2 (ja) * 2003-03-03 2010-04-14 インターデイジタル テクノロジー コーポレーション 複雑さを低減させたスライディングウィンドウ方式による等化器
US7388904B2 (en) * 2003-06-03 2008-06-17 Vativ Technologies, Inc. Near-end, far-end and echo cancellers in a multi-channel transceiver system
EP1925138A4 (en) * 2005-09-14 2012-02-29 Samsung Electronics Co Ltd DEVICE AND METHOD FOR BURST DECODING IN A MOBILE OFDMA COMMUNICATION SYSTEM
WO2007088580A1 (ja) * 2006-01-31 2007-08-09 Mitsubishi Denki Kabushiki Kaisha 通信制御方法、受信局装置、送信局装置および通信システム
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
US10498579B1 (en) * 2018-05-18 2019-12-03 MACOM Technology Solutions Holding, Inc. Dynamic constellation adaptation for slicer
KR102067938B1 (ko) * 2019-01-14 2020-01-17 박천수 제로포스 이퀄라이징 벡터합성 앱솔루트 엔코더 구현방법 및 그 장치
JP7684319B2 (ja) * 2020-01-30 2025-05-27 インターデイジタル パテント ホールディングス インコーポレイテッド 適応型間接キャリア変調の方法及び装置

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US4943980A (en) * 1989-05-02 1990-07-24 Intelligent Modem Corporation Multi-carrier high speed modem
US5243629A (en) * 1991-09-03 1993-09-07 At&T Bell Laboratories Multi-subcarrier modulation for hdtv transmission
GB2271693A (en) * 1992-10-13 1994-04-20 Motorola Israel Ltd Communications system having pilot signals transmitted over frequency divided channels
US5425050A (en) * 1992-10-23 1995-06-13 Massachusetts Institute Of Technology Television transmission system using spread spectrum and orthogonal frequency-division multiplex
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Also Published As

Publication number Publication date
JP4016126B2 (ja) 2007-12-05
DE69717285D1 (de) 2003-01-02
JP2000517513A (ja) 2000-12-26
NO990776D0 (no) 1999-02-19
ATE228286T1 (de) 2002-12-15
WO1998010554A2 (en) 1998-03-12
WO1998010554A3 (en) 1998-05-07
EP0922345B1 (en) 2002-11-20
DE69717285T2 (de) 2003-09-04
US6438174B1 (en) 2002-08-20
EP0922345A2 (en) 1999-06-16

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