ATE364950T1 - Methode und apparat für adaptive vorverzerrung - Google Patents

Methode und apparat für adaptive vorverzerrung

Info

Publication number
ATE364950T1
ATE364950T1 AT02745715T AT02745715T ATE364950T1 AT E364950 T1 ATE364950 T1 AT E364950T1 AT 02745715 T AT02745715 T AT 02745715T AT 02745715 T AT02745715 T AT 02745715T AT E364950 T1 ATE364950 T1 AT E364950T1
Authority
AT
Austria
Prior art keywords
transmitter
equalizer
filtered
signal
low
Prior art date
Application number
AT02745715T
Other languages
English (en)
Inventor
Edmund Coersmeier
Original Assignee
Nokia Corp
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 Nokia Corp filed Critical Nokia Corp
Application granted granted Critical
Publication of ATE364950T1 publication Critical patent/ATE364950T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
    • H04L27/367—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03617—Time recursive algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2201/00—Algorithms used for the adjustment of time-domain equalizers
    • H04L2201/02—Algorithms used for the adjustment of time-domain equalizers minimizing an error signal, e.g. least squares, minimum square error
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Transmitters (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Amplifiers (AREA)
  • Dc Digital Transmission (AREA)
AT02745715T 2002-07-15 2002-07-15 Methode und apparat für adaptive vorverzerrung ATE364950T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/002775 WO2004008707A1 (en) 2002-07-15 2002-07-15 Adaptive pre-equalization method and apparatus

Publications (1)

Publication Number Publication Date
ATE364950T1 true ATE364950T1 (de) 2007-07-15

Family

ID=30011698

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02745715T ATE364950T1 (de) 2002-07-15 2002-07-15 Methode und apparat für adaptive vorverzerrung

Country Status (12)

Country Link
US (1) US20060056327A1 (de)
EP (1) EP1523838B1 (de)
JP (1) JP2005538578A (de)
KR (1) KR100668125B1 (de)
CN (1) CN100514954C (de)
AT (1) ATE364950T1 (de)
AU (1) AU2002317424A1 (de)
DE (1) DE60220726T2 (de)
ES (1) ES2287294T3 (de)
NO (1) NO20045325L (de)
TW (1) TWI291291B (de)
WO (1) WO2004008707A1 (de)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4550639B2 (ja) * 2005-03-29 2010-09-22 株式会社東芝 線形歪み検出器及び線形歪み補償器
DE602005010592D1 (de) * 2005-11-15 2008-12-04 Alcatel Lucent Verfahren zur Übertragung von Kanalqualitätsinformationen in einem Multiträger-Funkkommunikationssystem und entsprechende Mobilstation und Basisstation
US8873585B2 (en) 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
US8902365B2 (en) * 2007-03-14 2014-12-02 Lance Greggain Interference avoidance in a television receiver
US9083940B2 (en) * 2007-03-14 2015-07-14 Steve Selby Automatic gain control system
US8358937B2 (en) * 2007-05-24 2013-01-22 Applied Optoelectronics, Inc. Systems and methods for reducing clipping in multichannel modulated optical systems
US8165475B2 (en) * 2007-05-24 2012-04-24 Applied Optoelectronics Systems and methods for reducing clipping in multichannel modulated optical systems
WO2009081376A2 (en) * 2007-12-20 2009-07-02 Mobileaccess Networks Ltd. Extending outdoor location based services and applications into enclosed areas
US8165474B2 (en) * 2008-03-21 2012-04-24 Applied Optoelectronics, Inc. Reducing cross modulation in multichannel modulated optical systems with anti-clipping
US8730878B2 (en) 2008-08-20 2014-05-20 Qualcomm Incorporated Power and resource efficient APPDU based approach with scheduled block ACKS for WLAN
EP2344915A4 (de) 2008-10-09 2015-01-21 Corning Cable Sys Llc Faseroptischer anschluss mit adaptertafel, die sowohl eingangs- als auch ausgangsfasern von einem optischen teiler unterstützt
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
WO2010091004A1 (en) 2009-02-03 2010-08-12 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
AU2010210766A1 (en) 2009-02-03 2011-09-15 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
US9590733B2 (en) 2009-07-24 2017-03-07 Corning Optical Communications LLC Location tracking using fiber optic array cables and related systems and methods
KR101061137B1 (ko) * 2009-08-18 2011-08-31 연세대학교 산학협력단 고속 적응형 등화기 및 그것의 제어 방법
US8280259B2 (en) 2009-11-13 2012-10-02 Corning Cable Systems Llc Radio-over-fiber (RoF) system for protocol-independent wired and/or wireless communication
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
CN102845001B (zh) 2010-03-31 2016-07-06 康宁光缆系统有限责任公司 基于光纤的分布式通信组件及系统中的定位服务以及相关方法
US8570914B2 (en) 2010-08-09 2013-10-29 Corning Cable Systems Llc Apparatuses, systems, and methods for determining location of a mobile device(s) in a distributed antenna system(s)
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
US9547145B2 (en) 2010-10-19 2017-01-17 Corning Optical Communications LLC Local convergence point for multiple dwelling unit fiber optic distribution network
CN103609146B (zh) 2011-04-29 2017-05-31 康宁光缆系统有限责任公司 用于增加分布式天线系统中的射频（rf）功率的系统、方法和装置
WO2012148938A1 (en) 2011-04-29 2012-11-01 Corning Cable Systems Llc Determining propagation delay of communications in distributed antenna systems, and related components, systems and methods
US9219546B2 (en) 2011-12-12 2015-12-22 Corning Optical Communications LLC Extremely high frequency (EHF) distributed antenna systems, and related components and methods
US10110307B2 (en) 2012-03-02 2018-10-23 Corning Optical Communications LLC Optical network units (ONUs) for high bandwidth connectivity, and related components and methods
US8891974B2 (en) 2012-03-30 2014-11-18 Applied Optoelectronics, Inc. Distortion compensation circuit including tunable phase path
EP2832012A1 (de) 2012-03-30 2015-02-04 Corning Optical Communications LLC Reduzierung ortsabhängiger interferenzen in verteilten antennensystemen in einer mimo-konfiguration sowie entsprechende komponenten, systeme und verfahren
US9781553B2 (en) 2012-04-24 2017-10-03 Corning Optical Communications LLC Location based services in a distributed communication system, and related components and methods
WO2013162988A1 (en) 2012-04-25 2013-10-31 Corning Cable Systems Llc Distributed antenna system architectures
CN103378870B (zh) * 2012-04-26 2015-08-05 启碁科技股份有限公司 通讯装置与射频均衡器
EP2883416A1 (de) 2012-08-07 2015-06-17 Corning Optical Communications Wireless Ltd. Verteilung von zeitlich gemultiplexten (tdm) management-diensten in einem verteilten antennensystem sowie entsprechende komponenten, systeme und verfahren
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
EP2926466A1 (de) 2012-11-29 2015-10-07 Corning Optical Communications LLC Hybride intrazell-/interzell-ferneinheiten-antennenbindung in verteilten mimo-antennensystemen
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9158864B2 (en) 2012-12-21 2015-10-13 Corning Optical Communications Wireless Ltd Systems, methods, and devices for documenting a location of installed equipment
CN105452951B (zh) 2013-06-12 2018-10-19 康宁光电通信无线公司 电压控制式光学定向耦合器
WO2014199380A1 (en) 2013-06-12 2014-12-18 Corning Optical Communications Wireless, Ltd. Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass)
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
US20160249365A1 (en) 2015-02-19 2016-08-25 Corning Optical Communications Wireless Ltd. Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (das)
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
US9648580B1 (en) 2016-03-23 2017-05-09 Corning Optical Communications Wireless Ltd Identifying remote units in a wireless distribution system (WDS) based on assigned unique temporal delay patterns
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998059471A2 (en) * 1997-06-20 1998-12-30 Ericsson Inc. Method and apparatus for digital compensation of radio distortion in a wireless communication system
US6285412B1 (en) * 1997-07-23 2001-09-04 Harris Corporation Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system
US6054896A (en) * 1998-12-17 2000-04-25 Datum Telegraphic Inc. Controller and associated methods for a linc linear power amplifier
US6834109B1 (en) * 1999-11-11 2004-12-21 Tokyo Electron Limited Method and apparatus for mitigation of disturbers in communication systems
US7015751B2 (en) * 2001-06-28 2006-03-21 Simon Fraser University Decorrelated power amplifier linearizers
US6794936B2 (en) * 2001-07-03 2004-09-21 Lucent Technologies Inc. Equalizer system and method for predistortion

Also Published As

Publication number Publication date
KR100668125B1 (ko) 2007-01-16
KR20050019857A (ko) 2005-03-03
WO2004008707A1 (en) 2004-01-22
EP1523838A1 (de) 2005-04-20
AU2002317424A1 (en) 2004-02-02
TWI291291B (en) 2007-12-11
NO20045325L (no) 2005-02-14
CN100514954C (zh) 2009-07-15
CN1656766A (zh) 2005-08-17
EP1523838B1 (de) 2007-06-13
TW200403932A (en) 2004-03-01
JP2005538578A (ja) 2005-12-15
US20060056327A1 (en) 2006-03-16
DE60220726D1 (de) 2007-07-26
ES2287294T3 (es) 2007-12-16
DE60220726T2 (de) 2008-02-21

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