ATE364950T1 - Methode und apparat für adaptive vorverzerrung - Google Patents
Methode und apparat für adaptive vorverzerrungInfo
- 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
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)
- Dc Digital Transmission (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Amplifiers (AREA)
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)
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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 |
ATE412284T1 (de) * | 2005-11-15 | 2008-11-15 | 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 |
US9083940B2 (en) | 2007-03-14 | 2015-07-14 | Steve Selby | Automatic gain control system |
US8902365B2 (en) * | 2007-03-14 | 2014-12-02 | Lance Greggain | Interference avoidance in a television receiver |
US8165475B2 (en) * | 2007-05-24 | 2012-04-24 | Applied Optoelectronics | Systems and methods for reducing clipping in multichannel modulated optical systems |
US8358937B2 (en) * | 2007-05-24 | 2013-01-22 | Applied Optoelectronics, Inc. | Systems and methods for reducing clipping in multichannel modulated optical systems |
US8644844B2 (en) * | 2007-12-20 | 2014-02-04 | Corning Mobileaccess 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 |
US20100046367A1 (en) | 2008-08-20 | 2010-02-25 | Qualcomm Incorporated | Power and resource efficient appdu based approach with scheduled data transmission times for wlan |
CN102209921B (zh) | 2008-10-09 | 2015-11-25 | 康宁光缆系统有限公司 | 具有支持来自光学分路器的输入和输出光纤的适配器面板的光纤终端 |
CN102396171B (zh) | 2009-02-03 | 2015-09-30 | 康宁光缆系统有限责任公司 | 基于光纤的分布式天线系统、组件和用于监视和配置基于光纤的分布式天线系统、组件的相关方法 |
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 |
CN102369678B (zh) | 2009-02-03 | 2015-08-19 | 康宁光缆系统有限责任公司 | 基于光纤的分布式天线系统、组件和用于校准基于光纤的分布式天线系统、组件的相关方法 |
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 |
WO2012054454A2 (en) | 2010-10-19 | 2012-04-26 | Corning Cable Systems Llc | Transition box for multiple dwelling unit fiber optic distribution network |
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 |
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 |
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 |
WO2013148986A1 (en) | 2012-03-30 | 2013-10-03 | Corning Cable Systems Llc | Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (mimo) configuration, and related components, systems, and methods |
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 |
EP2842245A1 (de) | 2012-04-25 | 2015-03-04 | Corning Optical Communications LLC | Verteilte antennensystemarchitekturen |
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 |
WO2014024192A1 (en) | 2012-08-07 | 2014-02-13 | Corning Mobile Access Ltd. | Distribution of time-division multiplexed (tdm) management services in a distributed antenna system, and related components, systems, and methods |
US9455784B2 (en) | 2012-10-31 | 2016-09-27 | Corning Optical Communications Wireless Ltd | Deployable wireless infrastructures and methods of deploying wireless infrastructures |
WO2014085115A1 (en) | 2012-11-29 | 2014-06-05 | Corning Cable Systems Llc | HYBRID INTRA-CELL / INTER-CELL REMOTE UNIT ANTENNA BONDING IN MULTIPLE-INPUT, MULTIPLE-OUTPUT (MIMO) DISTRIBUTED ANTENNA SYSTEMS (DASs) |
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 |
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) |
EP3008515A1 (de) | 2013-06-12 | 2016-04-20 | Corning Optical Communications Wireless, Ltd | Spannungsgesteuerter optischer richtkoppler |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU8144898A (en) * | 1997-06-20 | 1999-01-04 | 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 |
-
2002
- 2002-07-15 CN CNB028293231A patent/CN100514954C/zh not_active Expired - Fee Related
- 2002-07-15 AT AT02745715T patent/ATE364950T1/de not_active IP Right Cessation
- 2002-07-15 WO PCT/IB2002/002775 patent/WO2004008707A1/en active IP Right Grant
- 2002-07-15 AU AU2002317424A patent/AU2002317424A1/en not_active Abandoned
- 2002-07-15 ES ES02745715T patent/ES2287294T3/es not_active Expired - Lifetime
- 2002-07-15 EP EP02745715A patent/EP1523838B1/de not_active Expired - Lifetime
- 2002-07-15 DE DE60220726T patent/DE60220726T2/de not_active Expired - Fee Related
- 2002-07-15 KR KR1020057000619A patent/KR100668125B1/ko not_active IP Right Cessation
- 2002-07-15 US US10/520,383 patent/US20060056327A1/en not_active Abandoned
- 2002-07-15 JP JP2004520921A patent/JP2005538578A/ja active Pending
-
2003
- 2003-07-09 TW TW092118662A patent/TWI291291B/zh not_active IP Right Cessation
-
2004
- 2004-12-03 NO NO20045325A patent/NO20045325L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN100514954C (zh) | 2009-07-15 |
JP2005538578A (ja) | 2005-12-15 |
DE60220726T2 (de) | 2008-02-21 |
DE60220726D1 (de) | 2007-07-26 |
KR100668125B1 (ko) | 2007-01-16 |
TWI291291B (en) | 2007-12-11 |
ES2287294T3 (es) | 2007-12-16 |
WO2004008707A1 (en) | 2004-01-22 |
US20060056327A1 (en) | 2006-03-16 |
AU2002317424A1 (en) | 2004-02-02 |
TW200403932A (en) | 2004-03-01 |
CN1656766A (zh) | 2005-08-17 |
EP1523838A1 (de) | 2005-04-20 |
EP1523838B1 (de) | 2007-06-13 |
KR20050019857A (ko) | 2005-03-03 |
NO20045325L (no) | 2005-02-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |