NO20005417D0 - FremgangsmÕte for linearisering av en forsterker, samt forsterkeranordning - Google Patents

FremgangsmÕte for linearisering av en forsterker, samt forsterkeranordning

Info

Publication number
NO20005417D0
NO20005417D0 NO20005417A NO20005417A NO20005417D0 NO 20005417 D0 NO20005417 D0 NO 20005417D0 NO 20005417 A NO20005417 A NO 20005417A NO 20005417 A NO20005417 A NO 20005417A NO 20005417 D0 NO20005417 D0 NO 20005417D0
Authority
NO
Norway
Prior art keywords
amplifier
signal
linearizing
difference
well
Prior art date
Application number
NO20005417A
Other languages
English (en)
Other versions
NO20005417L (no
Inventor
Olli Tapio
Toni Nefling
Original Assignee
Nokia Networks Oy
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 Networks Oy filed Critical Nokia Networks Oy
Publication of NO20005417D0 publication Critical patent/NO20005417D0/no
Publication of NO20005417L publication Critical patent/NO20005417L/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2201/00—Indexing scheme relating to details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements covered by H03F1/00
    • H03F2201/32—Indexing scheme relating to modifications of amplifiers to reduce non-linear distortion
    • H03F2201/3233—Adaptive predistortion using lookup table, e.g. memory, RAM, ROM, LUT, to generate the predistortion

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
NO20005417A 1998-04-30 2000-10-27 Fremgangsmåte for linearisering av en forsterker, samt forsterkeranordning NO20005417L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980967A FI105506B (fi) 1998-04-30 1998-04-30 Vahvistimen linearisointimenetelmä ja vahvistinjärjestely
PCT/FI1999/000352 WO1999057806A1 (en) 1998-04-30 1999-04-28 Linearization method for amplifier, and amplifier arrangement

Publications (2)

Publication Number Publication Date
NO20005417D0 true NO20005417D0 (no) 2000-10-27
NO20005417L NO20005417L (no) 2000-12-27

Family

ID=8551630

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20005417A NO20005417L (no) 1998-04-30 2000-10-27 Fremgangsmåte for linearisering av en forsterker, samt forsterkeranordning

Country Status (10)

Country Link
US (1) US6741663B1 (no)
EP (1) EP1075731B1 (no)
JP (1) JP2002514028A (no)
CN (1) CN1299532A (no)
AT (1) ATE275301T1 (no)
AU (1) AU3712899A (no)
DE (1) DE69919861T2 (no)
FI (1) FI105506B (no)
NO (1) NO20005417L (no)
WO (1) WO1999057806A1 (no)

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EP1089428B1 (en) * 1999-09-30 2006-08-09 Kabushiki Kaisha Toshiba Nonlinear compensator
JP4256057B2 (ja) 1999-09-30 2009-04-22 株式会社東芝 非線形補償器
AU2069001A (en) * 1999-12-28 2001-07-09 Motorola, Inc. Locally-adapted fractionally-spaced linear predistorter
US6711221B1 (en) * 2000-02-16 2004-03-23 Thomson Licensing S.A. Sampling offset correction in an orthogonal frequency division multiplexing system
US7061990B2 (en) * 2000-07-21 2006-06-13 Pmc-Sierra Inc. Systems and methods for the dynamic range compression of multi-bearer single-carrier and multi-carrier waveforms
US20040156430A1 (en) * 2000-11-24 2004-08-12 Lobo Natividade Albert Component measures
JP2002223130A (ja) * 2001-01-25 2002-08-09 Fujitsu Ltd 送信装置および送信方法
US6940919B2 (en) * 2001-04-16 2005-09-06 Northrop Grumman Corporation Bandpass predistortion method and apparatus for radio transmission
GB2376613B (en) * 2001-06-15 2005-01-05 Wireless Systems Int Ltd Methods and apparatus for signal distortion correction
GB2376581B (en) * 2001-06-15 2005-03-09 Wireless Systems Int Ltd Control scheme for signal processing arrangement
US7409004B2 (en) * 2001-06-19 2008-08-05 Matsushita Electric Industrial Co., Ltd. Hybrid polar modulator differential phase Cartesian feedback correction circuit for power amplifier linearization
JP4012725B2 (ja) 2001-12-05 2007-11-21 株式会社日立コミュニケーションテクノロジー プリディストーション型増幅装置
FR2835120B1 (fr) * 2002-01-21 2006-10-20 Evolium Sas Procede et dispositif de preparation de signaux destines a etre compares pour etablir une pre-distorsion sur l'entree d'un amplificateur
CN1177449C (zh) 2002-04-23 2004-11-24 华为技术有限公司 基于基带数字预失真技术的提高射频功率放大器效率的方法
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US6985704B2 (en) 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US8472897B1 (en) 2006-12-22 2013-06-25 Dali Systems Co. Ltd. Power amplifier predistortion methods and apparatus
SE525221C2 (sv) 2003-03-25 2004-12-28 Ericsson Telefon Ab L M Förförvrängare för effektförstärkare
US20050111574A1 (en) * 2003-09-30 2005-05-26 Jan-Erik Muller Transmission device with digital predistortion, and method for regulating predistortion in a transmission device
CN1604577A (zh) * 2003-09-30 2005-04-06 因芬尼昂技术股份公司 具适应性数字预失真的发射装置、具该发射装置的收发器及操作该发射装置的方法
US7239671B2 (en) * 2004-07-09 2007-07-03 Powerwave Technologies, Inc. System and method for digital timing error correction in a communications system utilizing adaptive predistortion
WO2006030481A1 (ja) * 2004-09-13 2006-03-23 Mitsubishi Denki Kabushiki Kaisha 歪補償装置
US7193462B2 (en) * 2005-03-22 2007-03-20 Powerwave Technologies, Inc. RF power amplifier system employing an analog predistortion module using zero crossings
CN100563225C (zh) 2005-05-27 2009-11-25 华为技术有限公司 对基带数字信号进行预失真处理的通用装置
FI20055354A0 (fi) * 2005-06-29 2005-06-29 Nokia Corp Datankäsittelymenetelmä, lähetin, laite, verkkoelementti ja tukiasema
JP4951238B2 (ja) 2005-12-27 2012-06-13 パナソニック株式会社 極座標変調送信装置及び適応歪補償処理システム並びに極座標変調送信方法及び適応歪補償処理方法
CN101479956B (zh) * 2006-04-28 2013-07-31 大力***有限公司 用于无线通信的高效率线性化功率放大器
KR100720743B1 (ko) 2006-11-22 2007-05-23 주식회사 프리웍스 디지털 전치 왜곡을 이용한 디지털 광중계 시스템 및 그방법
US9026067B2 (en) * 2007-04-23 2015-05-05 Dali Systems Co. Ltd. Remotely reconfigurable power amplifier system and method
CN102017553B (zh) * 2006-12-26 2014-10-15 大力***有限公司 用于多信道宽带通信***中的基带预失真线性化的方法和***
JP5474764B2 (ja) * 2007-04-23 2014-04-16 ダリ システムズ カンパニー リミテッド Ｎウェイ分散電力増幅器
US8274332B2 (en) 2007-04-23 2012-09-25 Dali Systems Co. Ltd. N-way Doherty distributed power amplifier with power tracking
US20080285640A1 (en) * 2007-05-15 2008-11-20 Crestcom, Inc. RF Transmitter With Nonlinear Predistortion and Method Therefor
US8224266B2 (en) * 2007-08-30 2012-07-17 Dali Systems Co., Ltd. Power amplifier predistortion methods and apparatus using envelope and phase detector
WO2009109808A2 (en) 2007-12-07 2009-09-11 Dali Systems Co. Ltd. Baseband-derived rf digital predistortion
CN101184070B (zh) * 2007-12-07 2010-06-02 北京北方烽火科技有限公司 一种百兆宽带数字预失真功率放大装置和方法
CN100578922C (zh) 2007-12-17 2010-01-06 华为技术有限公司 高效功率放大器
GB2465399B (en) * 2008-11-17 2015-07-15 Nujira Ltd Generation of pre-distortion coefficients
CN101908861B (zh) * 2009-06-08 2012-11-07 瑞昱半导体股份有限公司 传送器、输出信号失真降低方法及预失真参数产生方法
US8295790B2 (en) * 2009-12-10 2012-10-23 Vyycore Ltd. Apparatus and method for pre-distorting and amplifying a signal
JP5761646B2 (ja) * 2009-12-21 2015-08-12 ダリ システムズ カンパニー リミテッド 変調アグノスティック（ａｇｎｏｓｔｉｃ）デジタルハイブリッドモード電力増幅器のシステム及び方法
CN105208083B (zh) 2010-09-14 2018-09-21 大力***有限公司 用于发送信号的***和分布式天线***
JP2013115725A (ja) * 2011-11-30 2013-06-10 Asahi Kasei Electronics Co Ltd 歪補償器
WO2014018379A1 (en) 2012-07-23 2014-01-30 Dali Systems Co. Ltd. Method and system for aligning signals widely spaced in frequency for wideband digital predistortion in wireless communication systems
CN104038459B (zh) * 2013-03-04 2018-01-05 中兴通讯股份有限公司 一种iq调制器及其处理方法
US10656254B2 (en) * 2015-11-19 2020-05-19 Analog Devices, Inc. Analog ultrasound beamformer
EP3306817B8 (en) * 2016-10-07 2021-04-21 Rohde & Schwarz GmbH & Co. KG Predistortion system and method
CN109683115B (zh) * 2019-02-12 2024-05-03 泰山医学院 一种磁共振射频功率放大器装置及磁共振***

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JPH0771118B2 (ja) * 1989-12-27 1995-07-31 三菱電機株式会社 変調装置
FR2652969A1 (fr) * 1989-10-06 1991-04-12 Philips Electronique Lab Dispositif de predistorsion pour systeme de transmission numerique.
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
IT1265271B1 (it) * 1993-12-14 1996-10-31 Alcatel Italia Sistema di predistorsione in banda base per la linearizzazione adattativa di amplificatori di potenza
FR2746564B1 (fr) * 1996-03-22 1998-06-05 Matra Communication Procede pour corriger des non-linearites d'un amplificateur, et emetteur radio mettant en oeuvre un tel procede
US5923712A (en) * 1997-05-05 1999-07-13 Glenayre Electronics, Inc. Method and apparatus for linear transmission by direct inverse modeling
US6075411A (en) * 1997-12-22 2000-06-13 Telefonaktiebolaget Lm Ericsson Method and apparatus for wideband predistortion linearization

Also Published As

Publication number Publication date
WO1999057806A1 (en) 1999-11-11
FI980967A0 (fi) 1998-04-30
ATE275301T1 (de) 2004-09-15
FI980967A (fi) 1999-10-31
DE69919861D1 (de) 2004-10-07
AU3712899A (en) 1999-11-23
DE69919861T2 (de) 2005-09-01
EP1075731A1 (en) 2001-02-14
JP2002514028A (ja) 2002-05-14
NO20005417L (no) 2000-12-27
EP1075731B1 (en) 2004-09-01
US6741663B1 (en) 2004-05-25
FI105506B (fi) 2000-08-31
CN1299532A (zh) 2001-06-13

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