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AU2000238065A1 - System for reducing adjacent-channel interference by pre-linearization and pre-distortion - Google Patents

System for reducing adjacent-channel interference by pre-linearization and pre-distortion

Info

Publication number
AU2000238065A1
AU2000238065A1 AU2000238065A AU3806500A AU2000238065A1 AU 2000238065 A1 AU2000238065 A1 AU 2000238065A1 AU 2000238065 A AU2000238065 A AU 2000238065A AU 3806500 A AU3806500 A AU 3806500A AU 2000238065 A1 AU2000238065 A1 AU 2000238065A1
Authority
AU
Australia
Prior art keywords
linearization
distortion
channel interference
reducing adjacent
reducing
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2000238065A
Inventor
Heinz Gerhauser
Rainer Perthold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of AU2000238065A1 publication Critical patent/AU2000238065A1/en
Abandoned legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
AU2000238065A 2000-02-24 2000-02-24 System for reducing adjacent-channel interference by pre-linearization and pre-distortion Abandoned AU2000238065A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2000/001539 WO2001063750A1 (en) 2000-02-24 2000-02-24 System for reducing adjacent-channel interference by pre-linearization and pre-distortion

Publications (1)

Publication Number Publication Date
AU2000238065A1 true AU2000238065A1 (en) 2001-09-03

Family

ID=8163849

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2000238065A Abandoned AU2000238065A1 (en) 2000-02-24 2000-02-24 System for reducing adjacent-channel interference by pre-linearization and pre-distortion

Country Status (5)

Country Link
US (1) US6621340B1 (en)
EP (1) EP1258080B1 (en)
AU (1) AU2000238065A1 (en)
DE (1) DE60003954T2 (en)
WO (1) WO2001063750A1 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0110106D0 (en) * 2001-04-25 2001-06-20 Filtronic Plc Electrical signal preconditioning
GB0123494D0 (en) * 2001-09-28 2001-11-21 Roke Manor Research Polynormial pre-disorter
JP4012725B2 (en) 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 Predistortion type amplifier
US6801086B1 (en) * 2002-04-03 2004-10-05 Andrew Corporation Adaptive digital pre-distortion using amplifier model that incorporates frequency-dependent non-linearities
WO2003096548A2 (en) * 2002-05-14 2003-11-20 Siemens Aktiengesellschaft Method for producing a transmission signal
US7116726B2 (en) * 2002-08-12 2006-10-03 Cubic Corporation Method and apparatus for transferring multiple symbol streams at low bit-error rates in a narrowband channel
US7254195B2 (en) * 2003-08-25 2007-08-07 M/A-Com, Inc. Apparatus, methods and articles of manufacture for dynamic differential delay correction
US7340007B2 (en) * 2003-09-16 2008-03-04 M/A-Com, Inc. Apparatus, methods and articles of manufacture for pre-emphasis filtering of a modulated signal
US7298854B2 (en) * 2002-12-04 2007-11-20 M/A-Com, Inc. Apparatus, methods and articles of manufacture for noise reduction in electromagnetic signal processing
CA2560586A1 (en) * 2004-03-25 2005-10-13 Optichron, Inc. Reduced complexity nonlinear filters for analog-to-digital converter linearization
AU2005228155B2 (en) * 2004-03-25 2010-06-24 Optichron, Inc. Digital linearizing system
DE102004038089B4 (en) * 2004-08-05 2016-02-04 Rohde & Schwarz Gmbh & Co. Kg Controller-based method and controller-based device for determining the characteristic of a compensation element in a level circuit
FI20055012A0 (en) * 2005-01-07 2005-01-07 Nokia Corp Trimming a broadcast signal
US7511574B2 (en) * 2005-02-17 2009-03-31 Hitachi Kokusai Electric Inc. Predistorter
US7426372B2 (en) * 2005-03-31 2008-09-16 M/A-Com Eurotec B.V. Piecewise linearizer circuit for radio frequency amplification
US7436339B2 (en) * 2005-07-20 2008-10-14 M/A-Com, Inc. Method and apparatus to emulate a filter using digital elements
US7307570B2 (en) * 2005-07-20 2007-12-11 M/A-Com, Inc. Method and apparatus to emulate a filter
US20070063888A1 (en) * 2005-09-22 2007-03-22 M/A-Com, Inc. Single side band radar
KR100795559B1 (en) * 2005-12-09 2008-01-21 한국전자통신연구원 Apparatus and method for compensating high frequency distortion in wireless system of orthogonal frequency division multiplexing
KR100865886B1 (en) * 2005-12-14 2008-10-29 삼성전자주식회사 Device for compensating for nonlinearity in high frequency amplifiers
US7599418B2 (en) * 2006-02-16 2009-10-06 Pine Valley Investments, Inc. Method and apparatus for a frequency hopper
US8050783B2 (en) * 2007-03-12 2011-11-01 Pine Valley Investments, Inc. System and method for pre-distorting a device input
US7869543B2 (en) * 2007-03-13 2011-01-11 Pine Valley Investments, Inc. System and method for synchronization, power control, calibration, and modulation in communication transmitters
US8009765B2 (en) * 2007-03-13 2011-08-30 Pine Valley Investments, Inc. Digital polar transmitter
CN102265540B (en) * 2008-12-22 2015-01-14 株式会社日立制作所 Optical transmitter and optical OFDM communication system
US8229029B2 (en) * 2009-01-14 2012-07-24 Harris Corporation Transmitter with reduced spectral regrowth and associated methods
US9655069B2 (en) * 2011-09-09 2017-05-16 Vixs Systems, Inc. Dynamic transmitter calibration
EP3039834B1 (en) * 2013-08-30 2018-10-24 FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. Method and apparatus for transmitting a signal with constant envelope
JP6611441B2 (en) 2014-02-28 2019-11-27 地方独立行政法人東京都立産業技術研究センター Frequency conversion unit, measurement system, and measurement method
US9300333B2 (en) * 2014-08-01 2016-03-29 Apple Inc. Methods for computing predistortion values for wireless systems
US9369219B1 (en) 2015-03-02 2016-06-14 Apple Inc. Radio frequency systems and methods for controlling spurious emissions
WO2022183177A1 (en) * 2021-02-25 2022-09-01 Analog Devices, Inc. Local oscillator clock shaping for pre-distortion

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462001A (en) 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
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
US4706287A (en) * 1984-10-17 1987-11-10 Kintek, Inc. Stereo generator
GB2211045B (en) 1987-10-10 1991-08-21 Marconi Co Ltd Linearity adjusting circuit
US5023937A (en) 1989-05-09 1991-06-11 Motorola, Inc. Transmitter with improved linear amplifier control
JPH03198512A (en) 1989-12-27 1991-08-29 Mitsubishi Electric Corp high frequency amplifier
US5049832A (en) * 1990-04-20 1991-09-17 Simon Fraser University Amplifier linearization by adaptive predistortion
GB2265270B (en) 1992-03-02 1996-06-12 Motorola Ltd Rf power amplifier with linearization
DE4302456A1 (en) 1993-01-29 1994-08-04 Telefunken Sendertechnik Modulation method and circuit for RF signals
IT1265271B1 (en) 1993-12-14 1996-10-31 Alcatel Italia BASEBAND PREDISTRITORTION SYSTEM FOR THE ADAPTIVE LINEARIZATION OF POWER AMPLIFIERS
DE19631388C2 (en) 1996-06-19 1998-07-02 Fraunhofer Ges Forschung Method for predistorting a signal to be transmitted over a non-linear transmission path and circuit arrangement for carrying out the method
DE19927952A1 (en) * 1999-06-18 2001-01-04 Fraunhofer Ges Forschung Device and method for predistorting a transmission signal to be transmitted over a non-linear transmission path

Also Published As

Publication number Publication date
WO2001063750A1 (en) 2001-08-30
US6621340B1 (en) 2003-09-16
DE60003954D1 (en) 2003-08-21
EP1258080A1 (en) 2002-11-20
EP1258080B1 (en) 2003-07-16
DE60003954T2 (en) 2004-05-27

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