SE9704011L - Förfarande och anordning i ett telekommunikationsproblem - Google Patents

Förfarande och anordning i ett telekommunikationsproblem

Info

Publication number
SE9704011L
SE9704011L SE9704011A SE9704011A SE9704011L SE 9704011 L SE9704011 L SE 9704011L SE 9704011 A SE9704011 A SE 9704011A SE 9704011 A SE9704011 A SE 9704011A SE 9704011 L SE9704011 L SE 9704011L
Authority
SE
Sweden
Prior art keywords
phase
procedure
control system
cartesian
rotator
Prior art date
Application number
SE9704011A
Other languages
English (en)
Other versions
SE512623C2 (sv
SE9704011D0 (sv
Inventor
Scott Allan Leyonhjelm
Mark Anthony Briffa
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9704011A priority Critical patent/SE512623C2/sv
Publication of SE9704011D0 publication Critical patent/SE9704011D0/sv
Priority to TW087118263A priority patent/TW427054B/zh
Priority to DE69831874T priority patent/DE69831874T2/de
Priority to PCT/SE1998/001991 priority patent/WO1999023756A1/en
Priority to ARP980105521A priority patent/AR017547A1/es
Priority to US09/184,973 priority patent/US6351677B1/en
Priority to EEP200000280A priority patent/EE04573B1/xx
Priority to KR1020007004811A priority patent/KR100665455B1/ko
Priority to EP98953135A priority patent/EP1027769B1/en
Priority to AU10583/99A priority patent/AU749268B2/en
Priority to JP2000519507A priority patent/JP4016372B2/ja
Priority to CNB988128896A priority patent/CN1168201C/zh
Publication of SE9704011L publication Critical patent/SE9704011L/sv
Publication of SE512623C2 publication Critical patent/SE512623C2/sv

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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • 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
    • 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
    • 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
    • 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
    • H03F1/3282—Acting on the phase and the amplitude 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
    • H03F1/3241—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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • 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
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present
    • 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
    • H03F2201/3231—Adaptive predistortion using phase feedback from the output of the main amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Feedback Control In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Centrifugal Separators (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Temperature (AREA)
SE9704011A 1997-11-03 1997-11-03 Förfarande och anordning i ett telekommunikationsproblem SE512623C2 (sv)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE9704011A SE512623C2 (sv) 1997-11-03 1997-11-03 Förfarande och anordning i ett telekommunikationsproblem
CNB988128896A CN1168201C (zh) 1997-11-03 1998-11-03 电信系统中的方法及装置
EEP200000280A EE04573B1 (et) 1997-11-03 1998-11-03 Meetod telekommunikatsioonissteemis Descartes`i kontrollssteemi kontrollahelas faasinihke kompenseerimiseks, arvutiprogrammitoode kasutamiseks koos Descartes`i kontrollssteemiga, faasiseadistaja Descartes`i kontrollssteemis ja Descartes`i kontrol
DE69831874T DE69831874T2 (de) 1997-11-03 1998-11-03 Verfahren und vorrichtung in einem telkommunikationssystem
PCT/SE1998/001991 WO1999023756A1 (en) 1997-11-03 1998-11-03 Method and device in a telecommunication system
ARP980105521A AR017547A1 (es) 1997-11-03 1998-11-03 Un medio de control para una disposicion de control cartesiano de senales cartesianas de entrada y senales cartesianas de realimentacion detelecomunicaciones, un ajustador de fase para dicho medio de control, una disposicion de control cartesiano que incorpora dicho medio de control, y un metodopara
US09/184,973 US6351677B1 (en) 1997-11-03 1998-11-03 Method and device in a telecommunication system
TW087118263A TW427054B (en) 1997-11-03 1998-11-03 Method and device in a telecommunication system
KR1020007004811A KR100665455B1 (ko) 1997-11-03 1998-11-03 전기통신 시스템에 있어서의 방법 및 장치
EP98953135A EP1027769B1 (en) 1997-11-03 1998-11-03 Method and device in a telecommunication system
AU10583/99A AU749268B2 (en) 1997-11-03 1998-11-03 Method and device in a telecommunication system
JP2000519507A JP4016372B2 (ja) 1997-11-03 1998-11-03 電気通信システムにおける方法及び装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9704011A SE512623C2 (sv) 1997-11-03 1997-11-03 Förfarande och anordning i ett telekommunikationsproblem

Publications (3)

Publication Number Publication Date
SE9704011D0 SE9704011D0 (sv) 1997-11-03
SE9704011L true SE9704011L (sv) 1999-05-04
SE512623C2 SE512623C2 (sv) 2000-04-10

Family

ID=20408840

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704011A SE512623C2 (sv) 1997-11-03 1997-11-03 Förfarande och anordning i ett telekommunikationsproblem

Country Status (12)

Country Link
US (1) US6351677B1 (sv)
EP (1) EP1027769B1 (sv)
JP (1) JP4016372B2 (sv)
KR (1) KR100665455B1 (sv)
CN (1) CN1168201C (sv)
AR (1) AR017547A1 (sv)
AU (1) AU749268B2 (sv)
DE (1) DE69831874T2 (sv)
EE (1) EE04573B1 (sv)
SE (1) SE512623C2 (sv)
TW (1) TW427054B (sv)
WO (1) WO1999023756A1 (sv)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2352570B (en) 1999-07-28 2003-12-24 Wireless Systems Int Ltd Distortion reduction
SE519596C2 (sv) * 1999-10-29 2003-03-18 Ericsson Telefon Ab L M Metod och apparat för att styra fasen i en lineariserad elektronisk förstärkare
JP2002009557A (ja) * 2000-06-21 2002-01-11 Matsushita Electric Ind Co Ltd 線形補償増幅装置
US6934341B2 (en) 2000-08-29 2005-08-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for plurality signal generation
US20030112896A1 (en) * 2001-07-11 2003-06-19 Raghavan Sreen A. Multi-channel communications transceiver
US7236757B2 (en) * 2001-07-11 2007-06-26 Vativ Technologies, Inc. High-speed multi-channel communications transceiver with inter-channel interference filter
US7295623B2 (en) * 2001-07-11 2007-11-13 Vativ Technologies, Inc. High-speed communications transceiver
EP1361655A1 (en) * 2002-05-07 2003-11-12 Semiconductor Ideas to The Market (ItoM) BV Mirror suppression circuit in a quadrature demodulator
US7010278B2 (en) * 2002-10-25 2006-03-07 Freescale Semiconductor, Inc. Sideband suppression method and apparatus for quadrature modulator using magnitude measurements
NZ524630A (en) * 2003-03-07 2005-10-28 Tait Electronics Ltd Phase & envelope generation in an EER system
DE10316559A1 (de) * 2003-04-10 2004-11-18 Rohde & Schwarz Ftk Gmbh Rückkopplungslinearisierte Sendereinrichtung
US7388904B2 (en) * 2003-06-03 2008-06-17 Vativ Technologies, Inc. Near-end, far-end and echo cancellers in a multi-channel transceiver system
US20050200408A1 (en) * 2004-03-15 2005-09-15 Benjamin James A. Method and apparatus for feed forward linearization of wideband RF amplifiers
US7382834B2 (en) * 2004-05-06 2008-06-03 Beceem Communications Inc. Phase rotation estimation
US7113037B2 (en) * 2004-07-14 2006-09-26 Raytheon Company Performing remote power amplifier linearization
DE102005002207A1 (de) * 2004-11-26 2006-06-01 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Ermittlung der Amplitude und/oder Phase des Ausgangssignals eines Übertragungsgliedes in Abhängigkeit der Amplitude des Eingangsignals
DE102005037880A1 (de) * 2005-05-19 2006-11-23 Rohde & Schwarz Gmbh & Co. Kg Verfahren und System zur Ermittlung der Amplitude und/oder Phase des Ausgangssignals eines Übertragungsgliedes in Abhängigkeit der Amplitude des Eingangssignals
JP4299819B2 (ja) 2005-08-17 2009-07-22 富士通株式会社 歪補償装置及び歪補償方法
US20070160168A1 (en) * 2006-01-11 2007-07-12 Beukema Troy J Apparatus and method for signal phase control in an integrated radio circuit

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4885551A (en) * 1988-10-31 1989-12-05 American Telephone And Telegraph Company At&T Bell Laboratories Feed forward linear amplifier
US4943783A (en) * 1989-07-31 1990-07-24 Nippon Telegraph And Telephone Corporation Feed forward distortion correction circuit
GB2238197A (en) 1989-11-16 1991-05-22 Motorola Inc Feed-forward amplifier with amplitude and phase pre-correction
US5134718A (en) 1990-10-31 1992-07-28 Motorola, Inc. Fast phase shift adjusting method and device for linear transmitter
GB9209982D0 (en) * 1992-05-08 1992-06-24 British Tech Group Method and apparatus for amplifying modulating and demodulating
SE470455B (sv) * 1992-08-24 1994-04-11 Ericsson Telefon Ab L M Anordning för kompensering av fasvridningen i återkopplingsslingan vid en kartesiskt återkopplad effektförstärkare
US5420536A (en) 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
GB9320078D0 (en) 1993-09-29 1993-11-17 Linear Modulation Tech Cartesian amplifier power control and related applications
GB2293935B (en) 1994-10-03 1999-07-14 Linear Modulation Tech Automatic calibration of carrier suppression and loop phase in a cartesian amplifier
JP2967699B2 (ja) * 1995-03-06 1999-10-25 日本電気株式会社 送信装置
US5650758A (en) * 1995-11-28 1997-07-22 Radio Frequency Systems, Inc. Pipelined digital predistorter for a wideband amplifier
US5862460A (en) * 1996-09-13 1999-01-19 Motorola, Inc. Power control circuit for a radio frequency transmitter

Also Published As

Publication number Publication date
AR017547A1 (es) 2001-09-12
CN1285974A (zh) 2001-02-28
JP2001522188A (ja) 2001-11-13
SE512623C2 (sv) 2000-04-10
KR100665455B1 (ko) 2007-01-04
DE69831874T2 (de) 2006-07-27
EE200000280A (et) 2001-08-15
TW427054B (en) 2001-03-21
DE69831874D1 (de) 2006-02-23
EP1027769B1 (en) 2005-10-12
JP4016372B2 (ja) 2007-12-05
KR20010031746A (ko) 2001-04-16
US6351677B1 (en) 2002-02-26
CN1168201C (zh) 2004-09-22
EP1027769A1 (en) 2000-08-16
EE04573B1 (et) 2005-12-15
WO1999023756A1 (en) 1999-05-14
AU1058399A (en) 1999-05-24
SE9704011D0 (sv) 1997-11-03
AU749268B2 (en) 2002-06-20

Similar Documents

Publication Publication Date Title
SE9704011L (sv) Förfarande och anordning i ett telekommunikationsproblem
DE69510257D1 (de) Polarisationsselektiver Halbleiterlaser und optisches Kommunikationssystem unter Verwendung dieses Lasers
FI962841A (sv) Makroinkapslade sekreterande celler
DE69732562D1 (de) Adaptive Vorverzerrungsschaltung für optische externe Modulation
DE69408802D1 (de) Polarisationsmodenselektiver Halbleiterlaser, Lichtquelle und optisches Kommunikationssystem unter Verwendung dieses Lasers
DE69736942D1 (de) Stabilisierte Leistungsregelung für optische Übertragungssysteme
DE69943221D1 (de) Optische übertragungs-vorrichtung, verfahr und system
ATE207622T1 (de) Integrierte optische schaltung
BR9813406A (pt) Atuador ótico incluindo isolante e sistema de comunicações otìcas incluindo o mesmo
DE69521157D1 (de) Polarisationsselektiver Halbleiterlaser, Lichtsender und optisches Kommunikationssystem unter Verwendung dieses Lasers
DE69526041D1 (de) Halbleiterlaser, Modulationsverfahren und optisches Kommunikationssystem
DE69526708D1 (de) Silikoneölen enthaltende kosmetische Zusammensetzung
DK1584682T3 (da) Regulering af bcl-2 gene ekspression
FI952571A0 (sv) Förfarande och krets för kontrollering an utgångseFörfarande och krets för kontrollering an utgångsegenskaper av ett switchat strömförsörjningsaggregagenskaper av ett switchat strömförsörjningsaggregat t
AU9615598A (en) Cooling device for an optical crystal, or laser crystal, respectively
ATE279036T1 (de) Kompensation thermooptischer effekte
IL133474A0 (en) Method and device for switching, amplification, controlling and modulation of optical radiation
DK0958382T3 (da) Hidtil ukendt fremgangsmåde til testning af differentieringsstatusen i pancreasceller fra pattedyr
BR9813874B1 (pt) Processo para controlar a potência de saída de um amplificador ótico em um nó em uma rede, nó em uma rede e rede compreendendo pelo menos dois nós
DE19983379T1 (de) Temperaturregelung elektronischer Bauelemente unter Verwendung von Leistungsfolgerückkopplung
NZ502175A (en) Selective regulation of adenovirus packaging with COUP-TF or lac repressor
DE69516988D1 (de) Halbleiterlaser, Modulationsverfahren und optisches Kommunikationssystem
DE60037086D1 (de) Polarisations- und Wellenlängenstabile Superfluoreszenz-Lichtquellen unter Verwendung von Faraday-Rotator-Spiegeln
DE69527109D1 (de) Gaslaser mit Mikrowellenanregung
DE69936559D1 (de) Übertragungsgerät und -verfahren unter Verwendung von Stromleitungen

Legal Events

Date Code Title Description
NUG Patent has lapsed