DE69028835D1 - Sendereinstellungssystem und -verfahren bei Funkverbindungen mit hoher Kapazität - Google Patents

Sendereinstellungssystem und -verfahren bei Funkverbindungen mit hoher Kapazität

Info

Publication number
DE69028835D1
DE69028835D1 DE69028835T DE69028835T DE69028835D1 DE 69028835 D1 DE69028835 D1 DE 69028835D1 DE 69028835 T DE69028835 T DE 69028835T DE 69028835 T DE69028835 T DE 69028835T DE 69028835 D1 DE69028835 D1 DE 69028835D1
Authority
DE
Germany
Prior art keywords
high capacity
radio links
tuning system
capacity radio
transmitter tuning
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.)
Expired - Fee Related
Application number
DE69028835T
Other languages
English (en)
Other versions
DE69028835T2 (de
Inventor
Lorenzo Cardini
Giancarlo Perego Gianca Perego
Rocco Nobili
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.)
Alcatel Lucent Italia SpA
Original Assignee
Alcatel Italia SpA
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 Italia SpA filed Critical Alcatel Italia SpA
Application granted granted Critical
Publication of DE69028835D1 publication Critical patent/DE69028835D1/de
Publication of DE69028835T2 publication Critical patent/DE69028835T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
DE69028835T 1989-12-21 1990-12-12 Sendereinstellungssystem und -verfahren bei Funkverbindungen mit hoher Kapazität Expired - Fee Related DE69028835T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02277189A IT1236905B (it) 1989-12-21 1989-12-21 Sistema per la messa a punto dei trasmettitori nei ponti radio digitali a grande capacita'

Publications (2)

Publication Number Publication Date
DE69028835D1 true DE69028835D1 (de) 1996-11-14
DE69028835T2 DE69028835T2 (de) 1997-04-30

Family

ID=11200287

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69028835T Expired - Fee Related DE69028835T2 (de) 1989-12-21 1990-12-12 Sendereinstellungssystem und -verfahren bei Funkverbindungen mit hoher Kapazität

Country Status (5)

Country Link
US (1) US5204881A (de)
EP (1) EP0433863B1 (de)
JP (1) JP3089668B2 (de)
DE (1) DE69028835T2 (de)
IT (1) IT1236905B (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507015A (en) * 1994-02-28 1996-04-09 Motorola, Inc. Method and apparatus for automatic modulation calibration in a radio transmitter
US5768693A (en) * 1995-02-28 1998-06-16 Telecommunications Equipment Corporation Method and apparatus for controlling frequency of a multi-channel transmitter
US5696794A (en) * 1996-04-04 1997-12-09 Motorola, Inc. Method and apparatus for conditioning digitally modulated signals using channel symbol adjustment
JPH1022844A (ja) * 1996-07-05 1998-01-23 Fujitsu Ltd 送信機の非線形歪み検出回路および非線形歪み補償回路
FI106413B (fi) * 1996-07-11 2001-01-31 Nokia Mobile Phones Ltd Lineaarisen tehovahvistimen tehonsäätöpiiri
US5895904A (en) * 1997-05-27 1999-04-20 Y. Nissim Coporation Magnetic ink character recognition encoder utilizing a dot matrix printer head and plurality of sensors for detecting, activating, and controlling the speed of the media
US6118975A (en) * 1997-12-02 2000-09-12 Wavetek Wandel Goltermann, Inc. Method and apparatus for leakage detection using pulsed RF tagging signal
FI990680A (fi) 1999-03-26 2000-09-27 Nokia Networks Oy I/Q-modulaattorin epälineaarisuuden korjaus
US6614854B1 (en) 1999-05-28 2003-09-02 Carriercomm, Inc. System and method for adaptive predistortion
WO2000074232A1 (fr) * 1999-05-28 2000-12-07 Fujitsu Limited Amplificateur de compensation de distorsion du type predistorsion
US6342810B1 (en) * 1999-07-13 2002-01-29 Pmc-Sierra, Inc. Predistortion amplifier system with separately controllable amplifiers
US6816008B2 (en) * 2002-12-31 2004-11-09 Alion Science And Technology Corporation Quasi-linear multi-state digital modulation through non-linear amplifier arrays
JP4730840B2 (ja) * 2006-11-15 2011-07-20 ルネサスエレクトロニクス株式会社 通信用半導体集積回路およびそれを用いた無線通信端末装置
US8200171B1 (en) * 2007-05-30 2012-06-12 Qualcomm Atheros, Inc. Square wave testing of two-point polar amplifiers
US20090068957A1 (en) * 2007-09-07 2009-03-12 Koo Ji-Hun Rfid reader compensating leakage signal and compensating method thereof

Family Cites Families (9)

* 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
DE3417776A1 (de) * 1983-06-01 1985-11-21 Manfred Dipl.-Ing. 7000 Stuttgart Horn Verfahren und schaltungsanordnungen zur kompensation von nichtlinearen amplituden- und/oder phasenverzerrungen
US4811422A (en) * 1986-12-22 1989-03-07 Kahn Leonard R Reduction of undesired harmonic components
GB2204202B (en) * 1987-04-28 1991-11-27 Racal Communications Equip Radio transmitters
SE459774B (sv) * 1987-11-27 1989-07-31 Ericsson Telefon Ab L M Anordning foer kompensering av fel upptraednnde i e n kvadraturmodulator
US4972440A (en) * 1988-09-23 1990-11-20 Hughes Aircraft Company Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
US4991164A (en) * 1989-03-23 1991-02-05 Telettra-Telefonia Elettronica E Radio S.P.A. Automatic transmit power level control in radio links
US4993021A (en) * 1989-03-23 1991-02-12 Telettra-Telefonia Elettronica E Radio Spa Automatic transmit power level control in radio links

Also Published As

Publication number Publication date
DE69028835T2 (de) 1997-04-30
US5204881A (en) 1993-04-20
EP0433863A3 (en) 1992-12-09
IT1236905B (it) 1993-04-26
IT8922771A1 (it) 1991-06-21
JPH04211549A (ja) 1992-08-03
JP3089668B2 (ja) 2000-09-18
EP0433863A2 (de) 1991-06-26
EP0433863B1 (de) 1996-10-09
IT8922771A0 (it) 1989-12-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee