WO2002063813A3 - CROSSTALK IDENTIFICATION IN xDSL SYSTEMS - Google Patents

CROSSTALK IDENTIFICATION IN xDSL SYSTEMS Download PDF

Info

Publication number
WO2002063813A3
WO2002063813A3 PCT/US2002/002861 US0202861W WO02063813A3 WO 2002063813 A3 WO2002063813 A3 WO 2002063813A3 US 0202861 W US0202861 W US 0202861W WO 02063813 A3 WO02063813 A3 WO 02063813A3
Authority
WO
WIPO (PCT)
Prior art keywords
crosstalk
data
estimate
systems
xdsl
Prior art date
Application number
PCT/US2002/002861
Other languages
French (fr)
Other versions
WO2002063813A2 (en
Inventor
Chaohuang Zeng
Carlos Horacio Aldana
Atull Salvekar
John M Cioffi
Original Assignee
Univ Leland Stanford Junior
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 Univ Leland Stanford Junior filed Critical Univ Leland Stanford Junior
Priority to AU2002253885A priority Critical patent/AU2002253885A1/en
Priority to EP02723078A priority patent/EP1358755A4/en
Publication of WO2002063813A2 publication Critical patent/WO2002063813A2/en
Publication of WO2002063813A3 publication Critical patent/WO2002063813A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/487—Testing crosstalk effects

Abstract

Methods, apparatus and systems for identifying crosstalk interference in xDSL systems are disclosed and are useful in a variety of xDSL systems to assist in the provisioning, maintenance and diagnosis of the xDSL system and in spectral management and assignments. Signal data are collected from a receiver, a primary transmitter and any crosstalk transmitters. The signal data are resampled, if necessary. A first estimate of the timing offset between the received signal and each crosstalk signal is then obtained by cross-correlating the received data with the transmitted crosstalk data. The first timing offset estimate is then used in connection with a least-squares estimation of the crosstalk response for the considered crosstalk data and a second estimate of the timing offset. The invention may be used at a third party site remote from the system transmitters and receivers. The crosstalk identification of the present invention can be used in dynamic spectrum management for DSL services and signals.
PCT/US2002/002861 2001-02-06 2002-02-01 Crosstalk identification in xdsl systems WO2002063813A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002253885A AU2002253885A1 (en) 2001-02-06 2002-02-01 Crosstalk identification in xdsl systems
EP02723078A EP1358755A4 (en) 2001-02-06 2002-02-01 Crosstalk identification in xdsl systems

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US26691901P 2001-02-06 2001-02-06
US60/266,919 2001-02-06
US09/788,267 US6990196B2 (en) 2001-02-06 2001-02-16 Crosstalk identification in xDSL systems
US09/788,267 2001-02-16

Publications (2)

Publication Number Publication Date
WO2002063813A2 WO2002063813A2 (en) 2002-08-15
WO2002063813A3 true WO2002063813A3 (en) 2003-05-08

Family

ID=26952106

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/002861 WO2002063813A2 (en) 2001-02-06 2002-02-01 Crosstalk identification in xdsl systems

Country Status (4)

Country Link
US (1) US6990196B2 (en)
EP (1) EP1358755A4 (en)
AU (1) AU2002253885A1 (en)
WO (1) WO2002063813A2 (en)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090031419A1 (en) 2001-05-24 2009-01-29 Indra Laksono Multimedia system and server and methods for use therewith
US8291457B2 (en) 2001-05-24 2012-10-16 Vixs Systems, Inc. Channel selection in a multimedia system
US7356049B1 (en) 2001-12-28 2008-04-08 Ikanos Communication, Inc. Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques
US7042934B2 (en) * 2002-01-23 2006-05-09 Actelis Networks Inc. Crosstalk mitigation in a modem pool environment
CA2380246A1 (en) * 2002-04-04 2003-10-04 Catena Networks Canada Inc. Crosstalk masking for digital subscriber loops
US7190665B2 (en) * 2002-04-19 2007-03-13 Texas Instruments Incorporated Blind crosstalk cancellation for multicarrier modulation
US20040114677A1 (en) * 2002-09-27 2004-06-17 Ehud Langberg Method and system for reducing interferences due to handshake tones
US8064325B1 (en) 2002-10-23 2011-11-22 The Board Of Trustees Of The Leland Stanford Junior University Concurrent frequency-sharing multi-user communication system with rate allocation approach
US7106688B2 (en) * 2003-04-14 2006-09-12 Cisco Technology, Inc. System and method for preventing phantom data communication links
US7809116B2 (en) * 2003-12-07 2010-10-05 Adaptive Spectrum And Signal Alignment, Inc. DSL system estimation including known DSL line scanning and bad splice detection capability
US8031761B2 (en) * 2003-12-07 2011-10-04 Adaptive Spectrum And Signal Alignment, Inc. Adaptive margin and band control
US7302379B2 (en) * 2003-12-07 2007-11-27 Adaptive Spectrum And Signal Alignment, Inc. DSL system estimation and parameter recommendation
US20050195892A1 (en) * 2004-03-05 2005-09-08 Texas Instruments Incorporated Training and updating for multiple input-output wireline communications
US7593458B2 (en) * 2004-05-18 2009-09-22 Adaptive Spectrum And Signal Alignment, Inc. FEXT determination system
US7453822B2 (en) * 2005-01-18 2008-11-18 At&T Intellectual Property I, L.P. System and method for managing broadband services
WO2006077289A2 (en) * 2005-01-21 2006-07-27 France Telecom Method for determination of the crosstalk coupling in a telecommunication cable
US7460588B2 (en) * 2005-03-03 2008-12-02 Adaptive Spectrum And Signal Alignment, Inc. Digital subscriber line (DSL) state and line profile control
US8073135B2 (en) * 2005-05-10 2011-12-06 Adaptive Spectrum And Signal Alignment, Inc. Binder identification
US7991122B2 (en) 2005-06-02 2011-08-02 Adaptive Spectrum And Signal Alignment, Inc. DSL system training
CN104618085A (en) * 2005-07-10 2015-05-13 适应性频谱和信号校正股份有限公司 Adaptive margin and band control method and device
CN101233721B (en) * 2005-07-10 2014-07-16 适应性频谱和信号校正股份有限公司 DSL system estimation of digital user circuit
US7672367B1 (en) 2005-08-12 2010-03-02 Adtran, Inc. System and method for selecting data rates of initialization signals
US7564898B1 (en) 2005-08-12 2009-07-21 Adtran, Inc. System and method for selecting data rates of data signals
WO2007044326A2 (en) 2005-10-04 2007-04-19 Adaptive Spectrum And Signal Alignment, Inc. Dsl system
CN100426761C (en) * 2005-11-30 2008-10-15 华为技术有限公司 Multi-user communication line crosstalk testing method and apparatus
DE602005021518D1 (en) * 2005-12-08 2010-07-08 Alcatel Lucent Method and device for identifying crosstalk sources
US8121029B2 (en) * 2006-02-06 2012-02-21 At&T Intellectual Property I, L.P. Methods and systems for providing supported DSL communications features as selections
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
WO2007146048A2 (en) * 2006-06-06 2007-12-21 Adaptive Spectrum And Signal Alignment, Inc. Vectored dsl system
US20140369480A1 (en) 2013-06-12 2014-12-18 Adaptive Spectrum And Signal Alignment, Inc. Systems, methods, and apparatuses for implementing a dsl system
WO2008024967A2 (en) * 2006-08-25 2008-02-28 Conexant Systems, Inc. Systems and methods for mimo precoding in an xdsl system
CN101136659B (en) * 2006-08-28 2012-01-25 华为技术有限公司 Method, system and equipment for crosstalk elimination of xDSL multiple lines
EP2060013B1 (en) * 2006-09-05 2016-03-09 Telefonaktiebolaget LM Ericsson (publ) Method for determining automatically a fext/next transfer-function
CN101192849B (en) * 2006-11-20 2010-10-27 华为技术有限公司 A channel matrix management method and device
US8358584B2 (en) * 2007-11-29 2013-01-22 Adc Dsl Systems, Inc. Port failure communication in cross-connect applications
US8270287B2 (en) * 2007-11-30 2012-09-18 Alcatel Lucent Twisted pair cable plant cross talk coupling simulator
US8717862B2 (en) * 2008-01-07 2014-05-06 Lantiq Deutschland Gmbh Communication apparatus and method
US8300803B2 (en) * 2008-04-09 2012-10-30 Ikanos Communications, Inc. Cooperative MIMO for alien noise cancellation (COMAC) for upstream VDSL systems
CN101562487B (en) * 2008-04-18 2013-09-11 华为技术有限公司 Frequency spectrum optimization method, device and digital user line system
US8854941B2 (en) * 2008-06-10 2014-10-07 Ikanos Communications, Inc. Vectored DSL crosstalk cancellation
WO2010002908A2 (en) 2008-07-01 2010-01-07 Vector Silicon, Inc. Reduced memory vectored dsl
KR101600332B1 (en) * 2008-08-23 2016-03-07 이카노스 커뮤니케이션스, 인크. Method and apparatus for DMT crosstalk cancellation
JP5406315B2 (en) * 2009-02-27 2014-02-05 イカノス テクノロジー リミテッド System and method for mitigating self-induced far-end crosstalk
US8204211B2 (en) 2009-04-29 2012-06-19 Ikanos Communications, Inc. Systems and methods for selecting tones for far-end cross talk mitigation
US8724799B2 (en) * 2009-05-29 2014-05-13 Telefonaktiebolaget L M Ericsson (Publ) Operating points for spectrum management in digital subscriber lines
US8675469B2 (en) * 2009-12-17 2014-03-18 At&T Intellectual Property I, Lp Monitoring non-managed wire pairs to improve dynamic spectrum management performance
US8718290B2 (en) 2010-01-26 2014-05-06 Audience, Inc. Adaptive noise reduction using level cues
US8473287B2 (en) 2010-04-19 2013-06-25 Audience, Inc. Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
WO2012067552A1 (en) * 2010-11-16 2012-05-24 Telefonaktiebolaget Lm Ericsson (Publ) MODULAR UNIT FOR SIMULATING PERFORMANCE IN MULTI-LINES DIGITAL SUBSCRIBER LINE (xDSL) SYSTEM
US8660138B2 (en) 2010-12-07 2014-02-25 At&T Intellectual Property I, L.P. Methods, apparatus and articles of manufacture to allocate ports to vectored digital subscriber line (DSL) groups
US8737188B1 (en) 2012-01-11 2014-05-27 Audience, Inc. Crosstalk cancellation systems and methods
US9640194B1 (en) 2012-10-04 2017-05-02 Knowles Electronics, Llc Noise suppression for speech processing based on machine-learning mask estimation
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
US9799330B2 (en) 2014-08-28 2017-10-24 Knowles Electronics, Llc Multi-sourced noise suppression

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271037A (en) * 1990-10-10 1993-12-14 Alcatel N.V. Line equipment for the compensation of crosstalk
US5608755A (en) * 1994-10-14 1997-03-04 Rakib; Selim Method and apparatus for implementing carrierless amplitude/phase encoding in a network
US5887032A (en) * 1996-09-03 1999-03-23 Amati Communications Corp. Method and apparatus for crosstalk cancellation
US6055297A (en) * 1996-08-02 2000-04-25 Northern Telecom Limited Reducing crosstalk between communications systems
US6160511A (en) * 1999-09-30 2000-12-12 Motorola, Inc. Method and apparatus for locating a remote unit within a communication system
US6160790A (en) * 1996-12-31 2000-12-12 Paradyne Corporation Crosstalk canceller system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995104A (en) * 1989-05-08 1991-02-19 At&T Bell Laboratories Interference cancelling circuit and method
US6173021B1 (en) * 1997-06-23 2001-01-09 Paradyne Corporation Method and apparatus for reducing interference in a twisted wire pair transmission system
US6134283A (en) * 1997-11-18 2000-10-17 Amati Communications Corporation Method and system for synchronizing time-division-duplexed transceivers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271037A (en) * 1990-10-10 1993-12-14 Alcatel N.V. Line equipment for the compensation of crosstalk
US5608755A (en) * 1994-10-14 1997-03-04 Rakib; Selim Method and apparatus for implementing carrierless amplitude/phase encoding in a network
US6055297A (en) * 1996-08-02 2000-04-25 Northern Telecom Limited Reducing crosstalk between communications systems
US5887032A (en) * 1996-09-03 1999-03-23 Amati Communications Corp. Method and apparatus for crosstalk cancellation
US6160790A (en) * 1996-12-31 2000-12-12 Paradyne Corporation Crosstalk canceller system and method
US6160511A (en) * 1999-09-30 2000-12-12 Motorola, Inc. Method and apparatus for locating a remote unit within a communication system

Also Published As

Publication number Publication date
US20020136397A1 (en) 2002-09-26
AU2002253885A1 (en) 2002-08-19
WO2002063813A2 (en) 2002-08-15
EP1358755A4 (en) 2004-10-20
EP1358755A2 (en) 2003-11-05
US6990196B2 (en) 2006-01-24

Similar Documents

Publication Publication Date Title
WO2002063813A3 (en) CROSSTALK IDENTIFICATION IN xDSL SYSTEMS
EP1067699A3 (en) Spread spectrum communication system
CA2603536A1 (en) System and methods of communicating over noisy communication channels
WO2004019559A3 (en) Method and system for location finding in a wireless local area network
HUP0202981A2 (en) Methods and devices for creating list of the signal displacements from several transmitter unit, as well as, radio positioning method and system, and digital telephone network
WO2007103967A3 (en) Establishing shared information in a network
WO2006058006A3 (en) Identification of the channel frequency response using chirps and stepped frequencies
ATE323996T1 (en) SYNCHRONIZATION AND RECORDING OF THE MODULATION TYPE
WO2007037634A3 (en) A method and apparatus for mitigating multiuser access interference
WO2004010603A3 (en) Frequency domain equalization of communication signals
EP1613012A3 (en) A transceiver using two or more antennas, and a transmitting-receiving method thereof
WO2008075881A3 (en) Sequence generating method for efficient detection and method for transmitting and receiving signals using the same
AU2003262867A1 (en) Method for communication between central terminal and multiple transponders and communications apparatus therefor
WO2002067526A3 (en) Channel estimation in multicarrier transmission systems
WO2003001684A3 (en) A timing estimation method and apparatus for a location system
TW200627870A (en) Multiple independent pathway communications
AU2842301A (en) Method and apparatus for estimating a frequency offset by combining pilot symbols and data symbols
WO2004107113A3 (en) Networking methods and apparatus
WO2005057943A3 (en) Frequency and timing error estimation and corresponding channel characterization in a communication system
CN105765913A (en) Interference mitigation apparatus and interference mitigation method for home network transmission line, and communication system using same
WO2002005447A3 (en) Method and apparatus for partial interference cancellation in a communication system
EP3376746A1 (en) Echo suppression testing method
EP1351407A3 (en) Transmission in broadband channel with frequency adjustment resulting from channel estimation
CA2374699A1 (en) Method and apparatus for frequency tracking in a space time transmit diversity receiver
NO20072656L (en) Identification of channel frequency response using pulse compression and incremental frequencies

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2002723078

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2002723078

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP