WO2002045258A3 - Method of linearising a signal - Google Patents

Method of linearising a signal Download PDF

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Publication number
WO2002045258A3
WO2002045258A3 PCT/EP2001/014221 EP0114221W WO0245258A3 WO 2002045258 A3 WO2002045258 A3 WO 2002045258A3 EP 0114221 W EP0114221 W EP 0114221W WO 0245258 A3 WO0245258 A3 WO 0245258A3
Authority
WO
WIPO (PCT)
Prior art keywords
input signal
representation
signal
linearising
error
Prior art date
Application number
PCT/EP2001/014221
Other languages
French (fr)
Other versions
WO2002045258A2 (en
Inventor
P Demain
B Toner
J Domokos
Original Assignee
Roke Manor Research
P Demain
B Toner
J Domokos
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 Roke Manor Research, P Demain, B Toner, J Domokos filed Critical Roke Manor Research
Priority to DE60135153T priority Critical patent/DE60135153D1/en
Priority to EP01999039A priority patent/EP1356586B1/en
Priority to AU2002216070A priority patent/AU2002216070A1/en
Publication of WO2002045258A2 publication Critical patent/WO2002045258A2/en
Publication of WO2002045258A3 publication Critical patent/WO2002045258A3/en

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
    • H03F1/3294—Acting on the real and imaginary components of the input signal
    • 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
    • H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward
    • H03F1/3229—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction
    • H03F1/3235—Modifications of amplifiers to reduce non-linear distortion using feed-forward using a loop for error extraction and another loop for error subtraction using a pilot signal
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

A method of linearising the output signal of a component e.g. power amplifier (1) having an input signal comprising; taking an initial estimated representation of the pre-distortion inverse curve (7), manipulating said representation; pre-distorting said input signal by applying values of said representation to the input signal (6); determning the error (3) in terms of linearity between the input signal and the output signal; and repeating previous steps such that the error is minimised.
PCT/EP2001/014221 2000-12-02 2001-11-30 Method of linearising a signal WO2002045258A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60135153T DE60135153D1 (en) 2000-12-02 2001-11-30 PROCESS FOR SIGNALING
EP01999039A EP1356586B1 (en) 2000-12-02 2001-11-30 Method of linearising a signal
AU2002216070A AU2002216070A1 (en) 2000-12-02 2001-11-30 Method of linearising a signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0029420A GB2369735B (en) 2000-12-02 2000-12-02 Method of linearising a signal
GB0029420.7 2000-12-02

Publications (2)

Publication Number Publication Date
WO2002045258A2 WO2002045258A2 (en) 2002-06-06
WO2002045258A3 true WO2002045258A3 (en) 2003-08-28

Family

ID=9904320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/014221 WO2002045258A2 (en) 2000-12-02 2001-11-30 Method of linearising a signal

Country Status (5)

Country Link
EP (1) EP1356586B1 (en)
AU (1) AU2002216070A1 (en)
DE (1) DE60135153D1 (en)
GB (1) GB2369735B (en)
WO (1) WO2002045258A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7403573B2 (en) * 2003-01-15 2008-07-22 Andrew Corporation Uncorrelated adaptive predistorter
US7259630B2 (en) 2003-07-23 2007-08-21 Andrew Corporation Elimination of peak clipping and improved efficiency for RF power amplifiers with a predistorter
FR2940559A1 (en) * 2008-12-22 2010-06-25 Commissariat Energie Atomique DEVICE FOR REDUCING TEMPORAL DISTORTIONS INDUCED IN LIGHT PULSES BY A NON-LINEAR OPTICAL FREQUENCY CONVERTER SYSTEM
CN102143106B (en) * 2010-02-01 2013-08-21 富士通株式会社 Adaptive digital predistortion device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008297A1 (en) * 1990-10-24 1992-05-14 Motorola, Inc. An apparatus and method for varying a signal in a transmitter of a transceiver
US5923712A (en) * 1997-05-05 1999-07-13 Glenayre Electronics, Inc. Method and apparatus for linear transmission by direct inverse modeling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5600718A (en) * 1995-02-24 1997-02-04 Ericsson Inc. Apparatus and method for adaptively precompensating for loudspeaker distortions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008297A1 (en) * 1990-10-24 1992-05-14 Motorola, Inc. An apparatus and method for varying a signal in a transmitter of a transceiver
US5923712A (en) * 1997-05-05 1999-07-13 Glenayre Electronics, Inc. Method and apparatus for linear transmission by direct inverse modeling
US6141390A (en) * 1997-05-05 2000-10-31 Glenayre Electronics, Inc. Predistortion in a linear transmitter using orthogonal kernels

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
STAPLETON S P ET AL: "SIMULATION AND ANALYSIS OF AN ADAPTIVE PREDISTORTER UTILIZING A COMPLEX SPECTRAL CONVOLUTION", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, IEEE INC. NEW YORK, US, vol. 41, no. 4, 1 November 1992 (1992-11-01), pages 387 - 394, XP000362352, ISSN: 0018-9545 *
YU T ET AL: "Application of nurbs in numerical grid generation", COMPUTER AIDED DESIGN, ELSEVIER PUBLISHERS BV., BARKING, GB, vol. 27, no. 2, 1 February 1995 (1995-02-01), pages 147 - 157, XP004022836, ISSN: 0010-4485 *

Also Published As

Publication number Publication date
GB2369735A (en) 2002-06-05
EP1356586B1 (en) 2008-07-30
DE60135153D1 (en) 2008-09-11
GB2369735B (en) 2004-07-14
EP1356586A2 (en) 2003-10-29
GB0029420D0 (en) 2001-01-17
WO2002045258A2 (en) 2002-06-06
AU2002216070A1 (en) 2002-06-11

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