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AU2002223650A1 - Waveform generator for use in iq modulation - Google Patents

Waveform generator for use in iq modulation

Info

Publication number
AU2002223650A1
AU2002223650A1 AU2002223650A AU2365002A AU2002223650A1 AU 2002223650 A1 AU2002223650 A1 AU 2002223650A1 AU 2002223650 A AU2002223650 A AU 2002223650A AU 2365002 A AU2365002 A AU 2365002A AU 2002223650 A1 AU2002223650 A1 AU 2002223650A1
Authority
AU
Australia
Prior art keywords
phase
waveform generator
controlled oscillator
modulation
quadrature
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.)
Abandoned
Application number
AU2002223650A
Inventor
Nadim Khlat
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of AU2002223650A1 publication Critical patent/AU2002223650A1/en
Abandoned 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
    • H04L27/365—Modulation using digital generation of the modulated carrier (not including modulation of a digitally generated carrier)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H04L27/122—Modulator circuits; Transmitter circuits using digital generation of carrier signals
    • 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)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transceivers (AREA)

Abstract

The invention relates to a transceiver for use in a wireless communication device. The transceiver comprises: waveform generator means (100) for producing in-phase and quadrature-phase signals (I,Q) for digital frequency modulation and IQ modulator means (170) for receiving said in-phase and quadrature-phase signals from said waveform generator means and for producing an IQ modulated signal for transmission. Furthermore, the transceiver comprises a first phase-locked-loop (150) having a receive voltage-controlled oscillator (152) and a second transmit loop (160) having a transmit voltage-controlled oscillator (162) and receiving a signal from said receive voltage-controlled oscillator. <IMAGE>
AU2002223650A 2000-12-07 2001-10-22 Waveform generator for use in iq modulation Abandoned AU2002223650A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00403442A EP1213889B1 (en) 2000-12-07 2000-12-07 Waveform generator for use in quadrature modulation (I/Q)
EP00403442.7 2000-12-07
PCT/EP2001/012402 WO2002047344A2 (en) 2000-12-07 2001-10-22 Waveform generator for use in iq modulation

Publications (1)

Publication Number Publication Date
AU2002223650A1 true AU2002223650A1 (en) 2002-06-18

Family

ID=8173972

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002223650A Abandoned AU2002223650A1 (en) 2000-12-07 2001-10-22 Waveform generator for use in iq modulation

Country Status (7)

Country Link
US (1) US7117234B2 (en)
EP (2) EP1213889B1 (en)
JP (1) JP2004515970A (en)
AT (1) ATE260521T1 (en)
AU (1) AU2002223650A1 (en)
DE (2) DE60030337T2 (en)
WO (1) WO2002047344A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8355472B2 (en) * 2010-04-28 2013-01-15 Motorola Solutions, Inc. Frequency deviation error compensation in an MLSE receiver
US8742864B2 (en) 2010-11-04 2014-06-03 Qualcomm Incorporated Method and digital circuit for generating a waveform from stored digital values
KR102268110B1 (en) * 2014-08-05 2021-06-22 삼성전자주식회사 Method and apparatus for modulating data and medium thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486846A (en) * 1982-06-28 1984-12-04 Motorola Inc. Numerically controlled oscillator using quadrant replication and function decomposition
US5084681A (en) * 1990-08-03 1992-01-28 Hewlett-Packard Company Digital synthesizer with phase memory
US5303412A (en) * 1992-03-13 1994-04-12 Massachusetts Institute Of Technology Composite direct digital synthesizer
US5361046A (en) * 1992-12-22 1994-11-01 Hughes Aircraft Company Modulator having fractional sample/symbol time
EP0782063A1 (en) * 1995-12-26 1997-07-02 Lsi Logic Corporation Noise reduction in digital frequency synthesizers
US5856766A (en) * 1997-06-30 1999-01-05 Motorola Inc. Communication device with a frequency compensating synthesizer and method of providing same
US6308048B1 (en) * 1997-11-19 2001-10-23 Ericsson Inc. Simplified reference frequency distribution in a mobile phone
US6208875B1 (en) * 1998-04-08 2001-03-27 Conexant Systems, Inc. RF architecture for cellular dual-band telephones
US7046738B1 (en) * 2000-02-08 2006-05-16 Ericsson Inc. 8-PSK transmit filtering using reduced look up tables
DE60010512T2 (en) * 2000-12-20 2004-09-23 Motorola, Inc., Schaumburg Quadrature modulator with programmable pulse shaping

Also Published As

Publication number Publication date
JP2004515970A (en) 2004-05-27
DE60008551D1 (en) 2004-04-01
WO2002047344A3 (en) 2002-10-10
US7117234B2 (en) 2006-10-03
EP1376968A1 (en) 2004-01-02
ATE260521T1 (en) 2004-03-15
EP1213889B1 (en) 2004-02-25
WO2002047344A2 (en) 2002-06-13
EP1376968B1 (en) 2006-08-23
DE60030337D1 (en) 2006-10-05
DE60030337T2 (en) 2007-08-16
DE60008551T2 (en) 2004-08-05
EP1213889A1 (en) 2002-06-12
US20040019620A1 (en) 2004-01-29

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