NO904469L - Fremgangsmaate og anordning for digital korreksjon av ulineariteter i en signaloverfoeringskjede. - Google Patents

Fremgangsmaate og anordning for digital korreksjon av ulineariteter i en signaloverfoeringskjede.

Info

Publication number
NO904469L
NO904469L NO90904469A NO904469A NO904469L NO 904469 L NO904469 L NO 904469L NO 90904469 A NO90904469 A NO 90904469A NO 904469 A NO904469 A NO 904469A NO 904469 L NO904469 L NO 904469L
Authority
NO
Norway
Prior art keywords
ulinearities
procedure
signal transmission
transmission chain
digital correction
Prior art date
Application number
NO90904469A
Other languages
English (en)
Other versions
NO904469D0 (no
Inventor
Robert Ravoalason
Guy Allemand
Original Assignee
Alcatel Transmission
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 Alcatel Transmission filed Critical Alcatel Transmission
Publication of NO904469D0 publication Critical patent/NO904469D0/no
Publication of NO904469L publication Critical patent/NO904469L/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
    • 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
    • H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
    • 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
    • H04B1/62—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 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Radio Relay Systems (AREA)
NO90904469A 1989-10-18 1990-10-16 Fremgangsmaate og anordning for digital korreksjon av ulineariteter i en signaloverfoeringskjede. NO904469L (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8913604A FR2653282B1 (fr) 1989-10-18 1989-10-18 Procede de correction numerique de non linearite d'une chaine d'emission, et dispositif de mise en óoeuvre de ce procede.

Publications (2)

Publication Number Publication Date
NO904469D0 NO904469D0 (no) 1990-10-16
NO904469L true NO904469L (no) 1991-04-19

Family

ID=9386510

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90904469A NO904469L (no) 1989-10-18 1990-10-16 Fremgangsmaate og anordning for digital korreksjon av ulineariteter i en signaloverfoeringskjede.

Country Status (7)

Country Link
US (1) US5105446A (no)
EP (1) EP0423666B1 (no)
JP (1) JPH03145356A (no)
CA (1) CA2027890C (no)
DE (1) DE69017139D1 (no)
FR (1) FR2653282B1 (no)
NO (1) NO904469L (no)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465494B (sv) * 1990-01-22 1991-09-16 Ericsson Telefon Ab L M Foerfarande att kompensera foer olineariteter i en slutfoerstaerkare
GB9111926D0 (en) * 1991-06-04 1991-07-24 Nat Transcommunications Ltd An improved method of video noise reduction using non-linear pre/de-emphasis
DE4120029A1 (de) * 1991-06-18 1992-12-24 Kolbe & Co Hans Schaltung zur verringerung von intermodulation beim einsatz von halbleiterlasern fuer die optische nachrichtenuebertragungstechnik
GB2272589B (en) * 1992-11-16 1995-11-29 Linear Modulation Tech Automatic calibration of the quadrature balance within a cartesian amplifier
SI9300025A (en) * 1993-01-21 1994-09-30 Spase Drakul Digital communication system in n-dimensional vector space for transmission coded waveforms in bandlimited chanels
GB2301247A (en) * 1995-05-22 1996-11-27 Univ Bristol A cartesian loop transmitter amplifier
GB2320827B (en) * 1996-12-24 2000-11-01 British Broadcasting Corp Radio-frequency amplifiers
GB2333674B (en) * 1998-01-21 2003-08-27 Nokia Mobile Phones Ltd A radio telephone
GB2349317A (en) 1998-01-21 2000-10-25 Nokia Mobile Phones Ltd Pulse shaping which compensates for component distortion
DE10012538C1 (de) * 2000-03-15 2001-09-20 Fraunhofer Ges Forschung Digitaler I/Q-Modulator mit Vorverzerrung
GB0123494D0 (en) * 2001-09-28 2001-11-21 Roke Manor Research Polynormial pre-disorter
US7058369B1 (en) 2001-11-21 2006-06-06 Pmc-Sierra Inc. Constant gain digital predistortion controller for linearization of non-linear amplifiers
CN1615578A (zh) * 2002-01-18 2005-05-11 罗克马诺尔研究有限公司 功率放大器中的改进或者与其有关的改进
GB0201134D0 (en) * 2002-01-18 2002-03-06 Roke Manor Research Improvements in or relating to power amplifiers
US6700439B2 (en) 2002-04-11 2004-03-02 Andrew Corporation Zero-bias bypass switch
US6812786B2 (en) * 2002-04-11 2004-11-02 Andrew Corporation Zero-bias bypass switching circuit using mismatched 90 degrees hybrid
US6674335B1 (en) * 2002-06-28 2004-01-06 Qualcomm Incorporated Blind linearization using cross-modulation
DE10252099B4 (de) * 2002-11-08 2021-08-05 Rohde & Schwarz GmbH & Co. Kommanditgesellschaft Messgerät und Verfahren zum Ermitteln einer Kennlinie einer Hochfrequenzeinheit
US7119588B2 (en) * 2005-01-28 2006-10-10 James Wayne Kelley Circuit for multiplying continuously varying signals

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4291277A (en) * 1979-05-16 1981-09-22 Harris Corporation Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
US4554514A (en) * 1984-12-21 1985-11-19 Rca Corporation Predistortion circuit with feedback
US4700151A (en) * 1985-03-20 1987-10-13 Nec Corporation Modulation system capable of improving a transmission system
JPS62142440A (ja) * 1985-12-17 1987-06-25 Fujitsu Ltd 変復調装置
JPS6436153A (en) * 1987-07-31 1989-02-07 Nec Corp Quadruple phase modulator
JPH0626352B2 (ja) * 1987-11-20 1994-04-06 日本電気エンジニアリング株式会社 プログラマブル変調回路
SE459774B (sv) * 1987-11-27 1989-07-31 Ericsson Telefon Ab L M Anordning foer kompensering av fel upptraednnde i e n kvadraturmodulator

Also Published As

Publication number Publication date
CA2027890A1 (fr) 1991-04-19
NO904469D0 (no) 1990-10-16
DE69017139D1 (de) 1995-03-30
FR2653282A1 (fr) 1991-04-19
CA2027890C (fr) 1994-01-11
FR2653282B1 (fr) 1994-07-22
EP0423666B1 (fr) 1995-02-22
EP0423666A1 (fr) 1991-04-24
US5105446A (en) 1992-04-14
JPH03145356A (ja) 1991-06-20

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