ATE122517T1 - Vorrichtung und verfahren zur modulierung in quadratur. - Google Patents

Vorrichtung und verfahren zur modulierung in quadratur.

Info

Publication number
ATE122517T1
ATE122517T1 AT89901689T AT89901689T ATE122517T1 AT E122517 T1 ATE122517 T1 AT E122517T1 AT 89901689 T AT89901689 T AT 89901689T AT 89901689 T AT89901689 T AT 89901689T AT E122517 T1 ATE122517 T1 AT E122517T1
Authority
AT
Austria
Prior art keywords
signals
carrier
modulating
square
quadrature
Prior art date
Application number
AT89901689T
Other languages
English (en)
Inventor
Clifford D Leitch
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
Application granted granted Critical
Publication of ATE122517T1 publication Critical patent/ATE122517T1/de

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H03C3/403—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated using two quadrature frequency conversion stages in cascade
    • 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
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3455—Modifications of the signal space to allow the transmission of additional information in order to facilitate carrier recovery at the receiver end, e.g. by transmitting a pilot or by using additional signal points to allow the detection of rotations
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0004—Circuit elements of modulators
    • H03C2200/0029—Memory circuits, e.g. ROMs, RAMs, EPROMs, latches, shift registers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0058—Quadrature arrangements
    • 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
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Liquid Crystal (AREA)
  • Holo Graphy (AREA)
AT89901689T 1988-01-11 1988-12-16 Vorrichtung und verfahren zur modulierung in quadratur. ATE122517T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/141,757 US4816783A (en) 1988-01-11 1988-01-11 Method and apparatus for quadrature modulation

Publications (1)

Publication Number Publication Date
ATE122517T1 true ATE122517T1 (de) 1995-05-15

Family

ID=22497095

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89901689T ATE122517T1 (de) 1988-01-11 1988-12-16 Vorrichtung und verfahren zur modulierung in quadratur.

Country Status (7)

Country Link
US (1) US4816783A (de)
EP (1) EP0400027B1 (de)
JP (1) JPH0681169B2 (de)
AT (1) ATE122517T1 (de)
CA (1) CA1314080C (de)
DE (1) DE3853782T2 (de)
WO (1) WO1989006460A1 (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8185591A (en) * 1990-06-12 1992-01-07 Motorola, Inc. Quadrature amplitude modulation synchronization method
US5119399A (en) * 1990-09-28 1992-06-02 Hewlett-Packard Co. Quadrature measurement and calibration of a vector modulator
JP3167745B2 (ja) * 1991-07-17 2001-05-21 日本放送協会 デイジタル変復調装置
ATE292356T1 (de) * 1992-01-08 2005-04-15 Broadband Innovations Inc Verfahren und gerät zur erzeugung eines mehrkanalsignal
WO1995016303A1 (en) * 1993-12-06 1995-06-15 National Semiconductor Corporation Improved quadrature modulator
US5706311A (en) * 1995-04-14 1998-01-06 Lucent Technologies Inc. Modulator circuit
US5825829A (en) * 1995-06-30 1998-10-20 Scientific-Atlanta, Inc. Modulator for a broadband communications system
US5926507A (en) * 1997-07-08 1999-07-20 The United States Of America As Represented By The Secretary Of The Navy Quotient coding modem
US6002342A (en) * 1997-11-21 1999-12-14 Motorola, Inc. Communication system and device having unit locating feature
US6240142B1 (en) * 1998-01-07 2001-05-29 Qualcomm Incorporated Quadrature modulator and demodulator
GB9821088D0 (en) * 1998-09-30 1998-11-18 Koninkl Philips Electronics Nv Radio transmitter
DE19934215C1 (de) * 1999-07-21 2001-03-29 Rohde & Schwarz Quadraturmischer mit adaptiver Fehlerkompensation
US6426980B1 (en) 1999-10-04 2002-07-30 Motorola, Inc. Method and apparatus for communicating a call
US6728527B2 (en) * 2001-07-10 2004-04-27 Asulab S.A. Double up-conversion modulator
DE10144907A1 (de) * 2001-09-12 2003-04-03 Infineon Technologies Ag Sendeanordnung, insbesondere für den Mobilfunk
EP1617612A1 (de) * 2003-05-14 2006-01-18 Matsushita Electric Industrial Co., Ltd. Modulationsverfahren, modulationseinrichtung, demodulationseinrichtung, und rundfunkvermittlungssystem
GB0320352D0 (en) * 2003-09-01 2003-10-01 Secr Defence Digital modulation waveforms for use in ranging systems
US7206357B2 (en) * 2003-11-04 2007-04-17 Terayon Communications Systems, Inc. System and method for an improved quadrature upconverter for I/Q modulation using intermediate frequency carriers
JP2005311413A (ja) * 2004-04-16 2005-11-04 Matsushita Electric Ind Co Ltd 通信装置及び通信方法
US7355470B2 (en) * 2006-04-24 2008-04-08 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7327803B2 (en) * 2004-10-22 2008-02-05 Parkervision, Inc. Systems and methods for vector power amplification
US7911272B2 (en) 2007-06-19 2011-03-22 Parkervision, Inc. Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
US8013675B2 (en) * 2007-06-19 2011-09-06 Parkervision, Inc. Combiner-less multiple input single output (MISO) amplification with blended control
US20130078934A1 (en) 2011-04-08 2013-03-28 Gregory Rawlins Systems and Methods of RF Power Transmission, Modulation, and Amplification
US7937106B2 (en) * 2006-04-24 2011-05-03 ParkerVision, Inc, Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
US8031804B2 (en) 2006-04-24 2011-10-04 Parkervision, Inc. Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
GB0612142D0 (en) 2006-06-20 2006-08-02 Secr Defence Spreading modulation spectrum control
WO2008144017A1 (en) 2007-05-18 2008-11-27 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
WO2009005768A1 (en) * 2007-06-28 2009-01-08 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
US20090080502A1 (en) * 2007-09-24 2009-03-26 Ahmadreza Rofougaran Method and system for distributed transceivers based on rf quadrature and lo quadrature filtering for high frequency applications
WO2009145887A1 (en) 2008-05-27 2009-12-03 Parkervision, Inc. Systems and methods of rf power transmission, modulation, and amplification
EP2715867A4 (de) 2011-06-02 2014-12-17 Parkervision Inc Antennensteuerung
WO2015042142A1 (en) 2013-09-17 2015-03-26 Parkervision, Inc. Method, apparatus and system for rendering an information bearing function of time

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB742977A (en) * 1953-12-14 1956-01-04 Standard Telephones Cables Ltd Improvements in or relating to electric carrier current communication systems
US3082296A (en) * 1958-05-01 1963-03-19 Itt Single side-band multichannel carrier system
US3196352A (en) * 1962-12-18 1965-07-20 Ibm Multilevel vestigial sideband suppressed carrier data transmission system
US3514701A (en) * 1967-03-15 1970-05-26 Anthony C Palatinus Quadrature select,multichannel independent sideband system
US3511936A (en) * 1967-05-26 1970-05-12 Bell Telephone Labor Inc Multiply orthogonal system for transmitting data signals through frequency overlapping channels
US3821798A (en) * 1972-02-18 1974-06-28 Ibm Resynchronizable recording system
US4313211A (en) * 1979-08-13 1982-01-26 Bell Telephone Laboratories, Incorporated Single sideband receiver with pilot-based feed forward correction for motion-induced distortion
US4398216A (en) * 1980-09-19 1983-08-09 Telease, Inc. Multiple signal transmission method and system, particularly for television
DE3380390D1 (en) * 1982-01-28 1989-09-14 Fujitsu Ltd Data transmitting-receiving system
CA1217233A (en) * 1982-12-29 1987-01-27 Susumu Sasaki Qam with dc bias in one channel
US4646326A (en) * 1983-10-20 1987-02-24 Motorola Inc. QAM modulator circuit
US4680777A (en) * 1984-08-13 1987-07-14 The University Of Michigan Quadrature-quadrature phase shift keying
JPS6177452A (ja) * 1984-09-25 1986-04-21 Nec Corp 多値直交振幅変調方法および装置
GB8505527D0 (en) * 1985-03-04 1985-04-03 Digital Equipment Corp Digitally implemented modulators
US4626803A (en) * 1985-12-30 1986-12-02 General Electric Company Apparatus for providing a carrier signal with two digital data streams I-Q modulated thereon
US4696017A (en) * 1986-02-03 1987-09-22 E-Systems, Inc. Quadrature signal generator having digitally-controlled phase and amplitude correction

Also Published As

Publication number Publication date
EP0400027B1 (de) 1995-05-10
EP0400027A4 (en) 1991-10-23
DE3853782T2 (de) 1995-11-23
WO1989006460A1 (en) 1989-07-13
US4816783A (en) 1989-03-28
DE3853782D1 (de) 1995-06-14
JPH04501042A (ja) 1992-02-20
JPH0681169B2 (ja) 1994-10-12
CA1314080C (en) 1993-03-02
EP0400027A1 (de) 1990-12-05

Similar Documents

Publication Publication Date Title
DE3853782D1 (de) Vorrichtung und verfahren zur modulierung in quadratur.
CA2185649A1 (en) Frequency transpositional hearing aid with digital and single sideband modulation
DE68910566D1 (de) Gerät zur Markierung von aufgezeichneten Signalen.
DE3873820D1 (de) Verfahren zur demodulation von digital modulierten signalen und vorrichtung zur durchfuehrung des verfahrens.
DE68919611D1 (de) Senderschaltung zur wirksamen Übertragung beim Nachrichtenverkehr unter Verwendung phasenmodulierter Trägersignalen.
DE3682202D1 (de) Verfahren und vorrichtung zur uebertragung von informationssignalen.
FR2630602B1 (fr) Appareil de reception de signaux modules en amplitude et de signaux modules en frequence
DE69126071D1 (de) Verfahren und Einrichtung zur Demodulation von digitalem Modulationssignal
DE59704554D1 (de) Verfahren zur drahtlosen übertragung einer nachricht
DE69031787D1 (de) Verfahren und System zur Direktmodulations-Phasenumtastung
DE59008551D1 (de) Verfahren zum übertragen von digitalen informationen, insbesondere toninformation, in einem fernsehkanal.
TW332366B (en) Asymmetric modem communication system and method
BR8703890A (pt) Metodo e equipamento para recuperacao da portadora de sinais modulados
DE3751101D1 (de) Modulator zur Erzeugung von PSK-Signalen mit konstanter Amplitude.
ZA877465B (en) Method and apparatus for generating a quadrature amplitude modulated signal
DE68908038D1 (de) Frequenzabweichungstolerierendes verfahren und vorrichtung zur demodulation von, durch eine binaersymbolreihe, winkelmodulierten signalen mit konstanter umhuellung und kontinuierlicher phase.
DE58908490D1 (de) Vorrichtung zur Entzerrung und Demodulation binärer phasenstetig winkelmodulierter Datensignale mit Modulationsindex 0,5.
DE59307911D1 (de) Amplitudenmodulierter Rundfunksender für verschiedene Modulationsarten, insbesondere DSB, SSB und ISB
ZA86917B (en) Single-sideband modulation method,single-sideband modulator and broadcast transmitter
MXPA04004977A (es) Metodo y aparato para precompensacion de traslape de impulso en senales moduladas digitalmente.
DE68919279D1 (de) Anordnung und Verfahren zur Behandlung von gleichzeitigen Radio-Frequenz-Signalen.
ATE187253T1 (de) Verfahren und gerät zur analyse von funksignalen der navigation
DE3852851D1 (de) Vorrichtung zur Modulation der Intensität eines Korpuskularstrahls.
ATE226775T1 (de) Datenträger mit wenigstens zwei demodulatoren zum empfang von ask-signale unterschiedlicher modulationstiefe
ATE113428T1 (de) Verfahren und anordnung zur kompensierung von nachbarkanalstörungen in einem zweiseitenband- amplituden-modulationssystem.

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties