DE69933243D1 - Funkgerät mit verzerrungskompensation - Google Patents

Funkgerät mit verzerrungskompensation

Info

Publication number
DE69933243D1
DE69933243D1 DE69933243T DE69933243T DE69933243D1 DE 69933243 D1 DE69933243 D1 DE 69933243D1 DE 69933243 T DE69933243 T DE 69933243T DE 69933243 T DE69933243 T DE 69933243T DE 69933243 D1 DE69933243 D1 DE 69933243D1
Authority
DE
Germany
Prior art keywords
radio device
distortion compensation
compensation
distortion
radio
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 - Lifetime
Application number
DE69933243T
Other languages
English (en)
Other versions
DE69933243T2 (de
Inventor
Yasuyuki Oishi
Takeshi Takano
Kazuo Nagatani
Tokuro Kubo
Takayoshi Ode
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE69933243D1 publication Critical patent/DE69933243D1/de
Publication of DE69933243T2 publication Critical patent/DE69933243T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • 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
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0433—Circuits with power amplifiers with linearisation using feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE69933243T 1999-07-28 1999-07-28 Funkgerät mit verzerrungskompensation Expired - Lifetime DE69933243T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1999/004036 WO2001008319A1 (fr) 1999-07-28 1999-07-28 Dispositif radio avec compensation de distorsion

Publications (2)

Publication Number Publication Date
DE69933243D1 true DE69933243D1 (de) 2006-10-26
DE69933243T2 DE69933243T2 (de) 2007-04-12

Family

ID=14236324

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69933243T Expired - Lifetime DE69933243T2 (de) 1999-07-28 1999-07-28 Funkgerät mit verzerrungskompensation

Country Status (5)

Country Link
US (1) US6567478B2 (de)
EP (1) EP1199814B1 (de)
JP (1) JP4097430B2 (de)
DE (1) DE69933243T2 (de)
WO (1) WO2001008319A1 (de)

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Also Published As

Publication number Publication date
US20020085647A1 (en) 2002-07-04
JP4097430B2 (ja) 2008-06-11
US6567478B2 (en) 2003-05-20
DE69933243T2 (de) 2007-04-12
EP1199814B1 (de) 2006-09-13
EP1199814A4 (de) 2005-04-13
EP1199814A1 (de) 2002-04-24
WO2001008319A1 (fr) 2001-02-01

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