NO985983D0 - Krets for forforvrengning av et signal som overf÷res over en ulineµr h÷yfrekvenskanal - Google Patents

Krets for forforvrengning av et signal som overf÷res over en ulineµr h÷yfrekvenskanal

Info

Publication number
NO985983D0
NO985983D0 NO985983A NO985983A NO985983D0 NO 985983 D0 NO985983 D0 NO 985983D0 NO 985983 A NO985983 A NO 985983A NO 985983 A NO985983 A NO 985983A NO 985983 D0 NO985983 D0 NO 985983D0
Authority
NO
Norway
Prior art keywords
distortion
circuit
high frequency
signal transmitted
transmitted over
Prior art date
Application number
NO985983A
Other languages
English (en)
Other versions
NO313478B1 (no
NO985983L (no
Inventor
Rainer Perthold
Heinz Gerhouser
Original Assignee
Fraunhofer Ges Forschung
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 DE19631388A external-priority patent/DE19631388C2/de
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO985983D0 publication Critical patent/NO985983D0/no
Publication of NO985983L publication Critical patent/NO985983L/no
Publication of NO313478B1 publication Critical patent/NO313478B1/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
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/102—A non-specified detector of a signal envelope being used in an amplifying circuit
    • 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)
  • Transmitters (AREA)
NO19985983A 1996-06-19 1998-12-18 Krets for forforvrengning av et signal som overföres over en uline¶r höyfrekvenskanal NO313478B1 (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624447 1996-06-19
DE19631388A DE19631388C2 (de) 1996-06-19 1996-08-02 Verfahren zum Vorverzerren eines über eine nichtlineare Übertragungsstrecke zu übertragenden Signals und Schaltungsanordnung zum Durchführung des Verfahrens
PCT/EP1997/003148 WO1997049174A1 (de) 1996-06-19 1997-06-17 Vorverzerrung für eine nichtlineare übertragungsstrecke im hochfrequenzbereich

Publications (3)

Publication Number Publication Date
NO985983D0 true NO985983D0 (no) 1998-12-18
NO985983L NO985983L (no) 1998-12-18
NO313478B1 NO313478B1 (no) 2002-10-07

Family

ID=26026717

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19985983A NO313478B1 (no) 1996-06-19 1998-12-18 Krets for forforvrengning av et signal som overföres over en uline¶r höyfrekvenskanal

Country Status (6)

Country Link
US (1) US6314142B1 (no)
EP (1) EP0885482B1 (no)
AU (1) AU3339397A (no)
CA (1) CA2258604C (no)
NO (1) NO313478B1 (no)
WO (1) WO1997049174A1 (no)

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FI103306B1 (fi) * 1997-03-17 1999-05-31 Nokia Telecommunications Oy Osoitteen muodostusmenetelmä ja järjestely
DE19813703A1 (de) * 1997-07-28 1999-02-04 Rohde & Schwarz Meßverfahren und Meßeinrichtung zum Messen der Verzerrung eines Hochfrequenz-Leistungsverstärkers und Entzerrungsverfahren und Entzerrungseinrichtung zum automatischen Entzerren eines Hochfrequenz-Leistungsverstärkers
US6239657B1 (en) 1998-03-27 2001-05-29 Rohde & Schwarz Gmbh & Co. Kg Method and device for measuring the distortion of a high-frequency power amplifier and method and means for automatically equalizing a high-frequency power amplifier
FI990680A (fi) 1999-03-26 2000-09-27 Nokia Networks Oy I/Q-modulaattorin epälineaarisuuden korjaus
DE19927952A1 (de) 1999-06-18 2001-01-04 Fraunhofer Ges Forschung Vorrichtung und Verfahren zum Vorverzerren eines über eine nicht-lineare Übertragungsstrecke zu übertragenden Übertragungssignals
US6587514B1 (en) * 1999-07-13 2003-07-01 Pmc-Sierra, Inc. Digital predistortion methods for wideband amplifiers
DE10012539C2 (de) * 2000-03-15 2003-04-10 Fraunhofer Ges Forschung I/Q-Modulator mit Trägervorverzerrung
DE10020930B4 (de) 2000-04-28 2007-10-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Vorbehandlung eines unter Verwendung eines nichtlinearen Verstärkers mit vorgeschaltetem Bandpaßfilter zu übertragenden Signals
JP3590571B2 (ja) * 2000-08-30 2004-11-17 株式会社日立国際電気 歪補償装置
GB0104535D0 (en) * 2001-02-23 2001-04-11 Univ Bristol Digital cartesian loop
DE10127571A1 (de) * 2001-05-30 2002-12-05 Deutsche Telekom Ag Verfahren und Anordnung für digitale Übertragung mit AM-Sendern
GB2376613B (en) * 2001-06-15 2005-01-05 Wireless Systems Int Ltd Methods and apparatus for signal distortion correction
US7382833B1 (en) * 2001-08-16 2008-06-03 Rockwell Collins, Inc. System for phase, gain, and DC offset error correction for a quadrature modulator
DE10150937A1 (de) * 2001-10-04 2003-04-10 Deutsche Telekom Ag Verfahren zur Reduzierung der Randaussendungen von AM-Sendern im Digitalbetrieb
US7295599B1 (en) * 2001-12-04 2007-11-13 Ellipsis Digital Systems, Inc. Digital conversion and compensation system
US6703897B2 (en) * 2001-12-26 2004-03-09 Nortel Networks Limited Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers
US6853246B2 (en) * 2002-04-18 2005-02-08 Agere Systems Inc. Adaptive predistortion system and a method of adaptively predistorting a signal
US8472897B1 (en) 2006-12-22 2013-06-25 Dali Systems Co. Ltd. Power amplifier predistortion methods and apparatus
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US6985704B2 (en) * 2002-05-01 2006-01-10 Dali Yang System and method for digital memorized predistortion for wireless communication
US6930547B2 (en) * 2002-08-09 2005-08-16 Andrew Corporation Linearizing LINC amplifiers using pre-distortion
KR100518456B1 (ko) * 2003-10-10 2005-09-30 학교법인 포항공과대학교 전력 증폭기의 선형화를 위한 디지털 피드백 선형화 장치및 방법
JP4323968B2 (ja) * 2004-01-14 2009-09-02 株式会社日立コミュニケーションテクノロジー 無線通信装置のタイミング調整方法
US7113037B2 (en) * 2004-07-14 2006-09-26 Raytheon Company Performing remote power amplifier linearization
US20060024062A1 (en) * 2004-07-28 2006-02-02 Nortel Networks Limited Pre-compensation for modulator distortion in optical systems
US20060058027A1 (en) * 2004-09-14 2006-03-16 Motorola, Inc. Method and apparatus for carrier frequency estimation and correction for GPS
US7193462B2 (en) * 2005-03-22 2007-03-20 Powerwave Technologies, Inc. RF power amplifier system employing an analog predistortion module using zero crossings
WO2008105775A1 (en) * 2006-04-28 2008-09-04 Dali Systems Co. Ltd High efficiency linearization power amplifier for wireless communication
CN101479956B (zh) 2006-04-28 2013-07-31 大力系统有限公司 用于无线通信的高效率线性化功率放大器
US7667980B2 (en) 2006-10-10 2010-02-23 International Business Machines Corporation Printed circuit boards for countering signal distortion
CN102017553B (zh) 2006-12-26 2014-10-15 大力系统有限公司 用于多信道宽带通信系统中的基带预失真线性化的方法和系统
WO2011094471A1 (en) * 2010-01-29 2011-08-04 Wavestream Corporation A linearizer incorporating a phase shifter
CN103597807B (zh) 2010-09-14 2015-09-30 大理系统有限公司 远程可重新配置的分布式天线系统和方法
CN104301268B (zh) * 2013-07-19 2019-05-21 中兴通讯股份有限公司 多通道预失真方法及装置
US9985590B2 (en) 2016-01-27 2018-05-29 Mediatek Inc. Adaptive power amplifier supply with pre-distortion mechanism
US10224970B2 (en) 2016-05-19 2019-03-05 Analog Devices Global Wideband digital predistortion
US10033413B2 (en) * 2016-05-19 2018-07-24 Analog Devices Global Mixed-mode digital predistortion
US11184204B2 (en) 2016-07-01 2021-11-23 Apple Inc. Pre-distortion circuit, apparatus, method and computer program for pre-distorting, transmitter, radio transceiver, mobile transceiver, base station transceiver, communication device, storage

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US4453133A (en) 1982-04-05 1984-06-05 Bell Telephone Laboratories, Incorporated Active predistorter for linearity compensation
US4465980A (en) 1982-09-23 1984-08-14 Rca Corporation Predistortion circuit for a power amplifier
FR2644638B1 (no) * 1989-03-14 1991-05-31 Labo Electronique Physique
US5023937A (en) 1989-05-09 1991-06-11 Motorola, Inc. Transmitter with improved linear amplifier control
JPH03198512A (ja) 1989-12-27 1991-08-29 Mitsubishi Electric Corp 高周波増幅器
GB2265270B (en) 1992-03-02 1996-06-12 Motorola Ltd Rf power amplifier with linearization
DE4302456A1 (de) * 1993-01-29 1994-08-04 Telefunken Sendertechnik Modulationsverfahren und -schaltung für HF-Signale
IT1265271B1 (it) 1993-12-14 1996-10-31 Alcatel Italia Sistema di predistorsione in banda base per la linearizzazione adattativa di amplificatori di potenza
US5892397A (en) * 1996-03-29 1999-04-06 Spectrian Adaptive compensation of RF amplifier distortion by injecting predistortion signal derived from respectively different functions of input signal amplitude
US5760646A (en) * 1996-03-29 1998-06-02 Spectrian Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
US5923712A (en) * 1997-05-05 1999-07-13 Glenayre Electronics, Inc. Method and apparatus for linear transmission by direct inverse modeling
US6072364A (en) * 1997-06-17 2000-06-06 Amplix Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains

Also Published As

Publication number Publication date
WO1997049174A1 (de) 1997-12-24
US6314142B1 (en) 2001-11-06
CA2258604C (en) 2001-05-01
EP0885482B1 (de) 1999-08-04
NO313478B1 (no) 2002-10-07
EP0885482A1 (de) 1998-12-23
NO985983L (no) 1998-12-18
CA2258604A1 (en) 1997-12-24
AU3339397A (en) 1998-01-07

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