WO2000036799A3 - Linearisation d'emetteur - Google Patents

Linearisation d'emetteur Download PDF

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Publication number
WO2000036799A3
WO2000036799A3 PCT/FI1999/001050 FI9901050W WO0036799A3 WO 2000036799 A3 WO2000036799 A3 WO 2000036799A3 FI 9901050 W FI9901050 W FI 9901050W WO 0036799 A3 WO0036799 A3 WO 0036799A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmitter
linearization parameters
linearization
transmitted
parameters
Prior art date
Application number
PCT/FI1999/001050
Other languages
English (en)
Other versions
WO2000036799A2 (fr
Inventor
Mikko Huttunen
Original Assignee
Nokia Networks Oy
Mikko Huttunen
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, Mikko Huttunen filed Critical Nokia Networks Oy
Priority to AU19859/00A priority Critical patent/AU1985900A/en
Publication of WO2000036799A2 publication Critical patent/WO2000036799A2/fr
Publication of WO2000036799A3 publication Critical patent/WO2000036799A3/fr

Links

Classifications

    • 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
    • H04L27/368—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator using predistortion adaptive predistortion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • H03D7/168—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages using a feedback loop containing mixers or demodulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

L'invention a trait à un procédé de mise à jour des paramètres de linéarisation d'un dispositif de distorsion préalable d'émetteur, et à un émetteur. Dans le procédé, des paramètres de linéarisation sont stockés dans un dispositif de mémoire (19, 20), la charge utile d'informations (I IN, Q IN) à transmettre fait l'objet d'une distorsion préalable effectuée à l'aide des paramètres de linéarisation dans un dispositif de distorsion préalable (3A, 3B, 4), la charge utile d'informations ayant fait l'objet d'une distorsion préalable est transmise dudit émetteur vers un conduit hertzien, ce qui permet de définir de nouveaux paramètres de linéarisation dans un moyen de définition (17) au cours de ladite transmission à l'aide de ladite charge utile d'informations transmise (OUT), et de remplacer les paramètres de linéarisation utilisés par ces nouveaux paramètres de linéarisation.
PCT/FI1999/001050 1998-12-17 1999-12-16 Linearisation d'emetteur WO2000036799A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU19859/00A AU1985900A (en) 1998-12-17 1999-12-16 Transmitter linearization

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982739A FI982739A (fi) 1998-12-17 1998-12-17 Lähettimen linearisointi
FI982739 1998-12-17

Publications (2)

Publication Number Publication Date
WO2000036799A2 WO2000036799A2 (fr) 2000-06-22
WO2000036799A3 true WO2000036799A3 (fr) 2000-09-14

Family

ID=8553143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/001050 WO2000036799A2 (fr) 1998-12-17 1999-12-16 Linearisation d'emetteur

Country Status (3)

Country Link
AU (1) AU1985900A (fr)
FI (1) FI982739A (fr)
WO (1) WO2000036799A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2377837A (en) * 2001-07-20 2003-01-22 Univ Bristol Mixer linearisation using frequency retranslation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5093637A (en) * 1987-12-27 1992-03-03 Mitsubishi Denki Kabushiki Kaisha Modulation device with input signal modification for correction of amplifier nonlinearities
EP0658975A1 (fr) * 1993-12-14 1995-06-21 ALCATEL ITALIA S.p.A. Système à prédistorsion pour signaux en bande de base pour la linéarisation adaptative d'amplificateurs de puissance
EP0731556A1 (fr) * 1995-03-06 1996-09-11 NEC Corporation Amplificateur de puissance linéaire utilisant des valeurs de correction mises à jour en amplitude et en phase
EP0907276A1 (fr) * 1997-06-30 1999-04-07 Harris Corporation Dispositif de prédistorsion adaptatif pour la linéarisation d'une sortie d'amplicateur dans un système de transmission de données

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5093637A (en) * 1987-12-27 1992-03-03 Mitsubishi Denki Kabushiki Kaisha Modulation device with input signal modification for correction of amplifier nonlinearities
EP0658975A1 (fr) * 1993-12-14 1995-06-21 ALCATEL ITALIA S.p.A. Système à prédistorsion pour signaux en bande de base pour la linéarisation adaptative d'amplificateurs de puissance
EP0731556A1 (fr) * 1995-03-06 1996-09-11 NEC Corporation Amplificateur de puissance linéaire utilisant des valeurs de correction mises à jour en amplitude et en phase
EP0907276A1 (fr) * 1997-06-30 1999-04-07 Harris Corporation Dispositif de prédistorsion adaptatif pour la linéarisation d'une sortie d'amplicateur dans un système de transmission de données

Also Published As

Publication number Publication date
WO2000036799A2 (fr) 2000-06-22
FI982739A (fi) 2000-06-18
FI982739A0 (fi) 1998-12-17
AU1985900A (en) 2000-07-03

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