DE69323649T2 - Digitaler Quadraturmodulator und Verfahren zur Prüfung desselben - Google Patents

Digitaler Quadraturmodulator und Verfahren zur Prüfung desselben

Info

Publication number
DE69323649T2
DE69323649T2 DE69323649T DE69323649T DE69323649T2 DE 69323649 T2 DE69323649 T2 DE 69323649T2 DE 69323649 T DE69323649 T DE 69323649T DE 69323649 T DE69323649 T DE 69323649T DE 69323649 T2 DE69323649 T2 DE 69323649T2
Authority
DE
Germany
Prior art keywords
testing
same
quadrature modulator
digital quadrature
digital
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
DE69323649T
Other languages
English (en)
Other versions
DE69323649D1 (de
Inventor
Tsyuguo Maru
Kazuyoshi Taguchi
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Application granted granted Critical
Publication of DE69323649D1 publication Critical patent/DE69323649D1/de
Publication of DE69323649T2 publication Critical patent/DE69323649T2/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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2092—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner with digital generation of the modulated carrier (does not include the modulation of a digitally generated carrier)

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE69323649T 1992-05-29 1993-05-07 Digitaler Quadraturmodulator und Verfahren zur Prüfung desselben Expired - Fee Related DE69323649T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4138931A JP2937624B2 (ja) 1992-05-29 1992-05-29 ディジタル化直交変調用集積回路とその検査方法

Publications (2)

Publication Number Publication Date
DE69323649D1 DE69323649D1 (de) 1999-04-08
DE69323649T2 true DE69323649T2 (de) 1999-06-24

Family

ID=15233493

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69323649T Expired - Fee Related DE69323649T2 (de) 1992-05-29 1993-05-07 Digitaler Quadraturmodulator und Verfahren zur Prüfung desselben

Country Status (4)

Country Link
US (1) US5432483A (de)
EP (1) EP0572130B1 (de)
JP (1) JP2937624B2 (de)
DE (1) DE69323649T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10150472B4 (de) * 2000-12-19 2017-12-28 Cypress Semiconductor Corp. (N.D.Ges.D.Staates Delaware) Integrierte Halbleiterschaltungsvorrichtung mit Verstärker mit variabler Verstärkung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5995541A (en) * 1995-10-13 1999-11-30 Philips Electronics North America Corporation Method and apparatus for self-calibration and testing of ZPSK transmitter/receiver IC's
CA2213156A1 (en) 1997-08-15 1999-02-15 Philsar Electronics Inc. One bit digital quadrature vector modulator
US6298096B1 (en) 1998-11-19 2001-10-02 Titan Corporation Method and apparatus for determination of predistortion parameters for a quadrature modulator
US10979069B2 (en) * 2019-03-14 2021-04-13 Mediatek Inc. Delta-sigma modulator with truncation error compensation and associated method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105254A1 (de) * 1981-02-13 1982-09-09 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zum ueberpruefen von in speichern abgelegten daten
JPS59177799A (ja) * 1983-03-26 1984-10-08 Panafacom Ltd 読出専用メモリのチエツク方式
JPS60124100A (ja) * 1983-12-08 1985-07-02 Toshiba Corp 読出し専用メモリの試験装置
US4644561A (en) * 1985-03-20 1987-02-17 International Mobile Machines Corp. Modem for RF subscriber telephone system
JPH0370336A (ja) * 1989-08-10 1991-03-26 Mitsubishi Electric Corp ディジタル変調の波形データ修正方法
JP2941331B2 (ja) * 1990-02-13 1999-08-25 株式会社日立製作所 π／４シフトＱＰＳＫ変調器及びそれを用いた通信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10150472B4 (de) * 2000-12-19 2017-12-28 Cypress Semiconductor Corp. (N.D.Ges.D.Staates Delaware) Integrierte Halbleiterschaltungsvorrichtung mit Verstärker mit variabler Verstärkung

Also Published As

Publication number Publication date
DE69323649D1 (de) 1999-04-08
EP0572130A1 (de) 1993-12-01
EP0572130B1 (de) 1999-03-03
US5432483A (en) 1995-07-11
JP2937624B2 (ja) 1999-08-23
JPH0669970A (ja) 1994-03-11

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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