DE3500295C2 - - Google Patents

Info

Publication number
DE3500295C2
DE3500295C2 DE3500295A DE3500295A DE3500295C2 DE 3500295 C2 DE3500295 C2 DE 3500295C2 DE 3500295 A DE3500295 A DE 3500295A DE 3500295 A DE3500295 A DE 3500295A DE 3500295 C2 DE3500295 C2 DE 3500295C2
Authority
DE
Germany
Prior art keywords
signal
complex
output
phase
digital data
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
Application number
DE3500295A
Other languages
German (de)
English (en)
Other versions
DE3500295A1 (de
Inventor
Jan Utrecht Nl Boer
Wilhelmus Josephus Maria Diessen Nl Diepstraten
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.)
NCR Voyix Corp
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Publication of DE3500295A1 publication Critical patent/DE3500295A1/de
Application granted granted Critical
Publication of DE3500295C2 publication Critical patent/DE3500295C2/de
Granted 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/10—Arrangements for initial synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE19853500295 1984-01-13 1985-01-07 Digitaldatenempfaenger mit zeitgabeeinstellschaltung Granted DE3500295A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08400922A GB2153186B (en) 1984-01-13 1984-01-13 Digital data receiver including timing adjustment circuit

Publications (2)

Publication Number Publication Date
DE3500295A1 DE3500295A1 (de) 1985-09-19
DE3500295C2 true DE3500295C2 (US06580902-20030617-M00005.png) 1988-04-21

Family

ID=10554953

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19853500295 Granted DE3500295A1 (de) 1984-01-13 1985-01-07 Digitaldatenempfaenger mit zeitgabeeinstellschaltung

Country Status (6)

Country Link
US (1) US4577334A (US06580902-20030617-M00005.png)
JP (1) JPS60160757A (US06580902-20030617-M00005.png)
CA (1) CA1222289A (US06580902-20030617-M00005.png)
DE (1) DE3500295A1 (US06580902-20030617-M00005.png)
FR (1) FR2558319B1 (US06580902-20030617-M00005.png)
GB (1) GB2153186B (US06580902-20030617-M00005.png)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS626548A (ja) * 1985-07-03 1987-01-13 Hitachi Ltd タイミング信号抽出回路
EP0239293A3 (en) * 1986-03-24 1988-12-14 Gpt Limited Data transmission systems
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
FR2604318B1 (fr) * 1986-09-23 1989-03-31 Thomson Csf Procede et dispositif de synchronisation symbole et leur application a la demodulation symbole de messages numeriques
JPS63120538A (ja) * 1986-11-08 1988-05-24 Nec Corp タイミング再生回路
US4788697A (en) * 1987-01-02 1988-11-29 American Telephone & Telegraph Company Method and apparatus for synchronizing a signal to a time base
GB2209648B (en) * 1987-09-10 1991-10-23 Ncr Co Modem communication system having main and secondary channels
GB2212699B (en) * 1987-11-16 1992-01-08 Ncr Co Multipoint data modem communication system
GB8800739D0 (en) * 1988-01-13 1988-02-10 Ncr Co Multipoint modem system having fast synchronization
GB8800740D0 (en) * 1988-01-13 1988-02-10 Ncr Co Data modem receiver
GB8805767D0 (en) * 1988-03-10 1988-04-07 Ncr Co Phase perturbation compensation system
US5097485A (en) * 1989-10-10 1992-03-17 Hughes Aircraft Company Hf high data rate modem
US5127027A (en) * 1989-11-09 1992-06-30 Canon Kabushiki Kaisha Training signal detecting apparatus
US5239585A (en) * 1991-07-30 1993-08-24 Texas Instruments Incorporated Devices, systems, and methods for composite signal decoding
DE69216972T2 (de) * 1991-09-30 1997-09-04 Nec Corp Phasenregelschaltung die schnell in einem synchronisierten Zustand gebracht werden kann
CA2114408A1 (en) * 1993-02-18 1994-08-19 David C. Rife Method and apparatus for accurately estimating a clock frequency and for simulating a precision clock oscillator
US5440347A (en) * 1993-05-07 1995-08-08 Philips Electronics North America Corporation Method and apparatus for randomizing training sequences to minimize interference in digital transmissions
JP2885267B2 (ja) * 1994-07-15 1999-04-19 日本電気株式会社 デジタル変調信号受信機
FI98026C (fi) * 1995-11-08 1997-03-25 Nokia Technology Gmbh Menetelmä QAM-vastaanottimen yhteydessä ja QAM-vastaanotin
US5828710A (en) * 1995-12-11 1998-10-27 Delco Electronics Corporation AFC frequency synchronization network
US5793820A (en) * 1996-07-10 1998-08-11 Intellon Corporation Automatic adaptive filtering according to frequency modulation rate
SE517930C2 (sv) 1997-01-31 2002-08-06 Ericsson Telefon Ab L M Förfarande och anordning för initial synkronisering i ett kommunikationssystem
US6501811B1 (en) * 1998-04-24 2002-12-31 Ricoh Company, Ltd. Sampling system
US6642884B2 (en) * 2000-05-08 2003-11-04 Sigtec Navigation Pty Ltd. Satellite-based positioning system receiver for weak signal operation
US7251290B2 (en) * 2002-12-16 2007-07-31 Nortel Networks Limited Adaptive controller for linearization of transmitter
US7333557B2 (en) * 2002-12-16 2008-02-19 Nortel Networks Limited Adaptive controller for linearization of transmitter with impairments
US8995502B1 (en) 2006-04-04 2015-03-31 Apple Inc. Transceiver with spectral analysis
US8886341B1 (en) 2006-04-04 2014-11-11 Microsoft Corporation Adaptive sample-by-sample controller for under-determined systems
US8498590B1 (en) 2006-04-04 2013-07-30 Apple Inc. Signal transmitter linearization
US7796960B1 (en) 2006-04-04 2010-09-14 Nortel Networks Limited Signal transmitter linearization
IT1398344B1 (it) * 2010-02-23 2013-02-22 Acqua Brevetti 95 Srl Dispositivo dosatore perfezionato.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758870A (en) * 1972-02-23 1973-09-11 Sanders Associates Inc Digital demodulator
FR2309089A1 (fr) * 1975-04-25 1976-11-19 Ibm France Procede pour synchroniser l'horloge du recepteur d'un systeme de transmission de donnees et dispositif pour mettre en oeuvre le procede
FR2358056A1 (fr) * 1976-07-09 1978-02-03 Ibm France Procede et dispositif de synchronisation de l'horloge du recepteur d'un systeme de transmissions de donnees en modulation psk
FR2418584A1 (fr) * 1978-02-28 1979-09-21 Ibm France Procede et dispositif d'acquisition de la phase initiale de l'horloge dans un recepteur de donnees synchrone
US4313202A (en) * 1980-04-03 1982-01-26 Codex Corporation Modem circuitry
FR2505111B1 (fr) * 1981-04-29 1986-04-18 Labo Electronique Physique Dispositif de recuperation de porteuse pour une modulation d'amplitude et de phase a seize etats et systeme de reception de donnees numeriques comprenant un tel dispositif
US4458355A (en) * 1981-06-11 1984-07-03 Hycom Incorporated Adaptive phase lock loop

Also Published As

Publication number Publication date
DE3500295A1 (de) 1985-09-19
FR2558319B1 (fr) 1988-12-09
JPS60160757A (ja) 1985-08-22
GB2153186B (en) 1987-04-23
GB8400922D0 (en) 1984-02-15
GB2153186A (en) 1985-08-14
US4577334A (en) 1986-03-18
CA1222289A (en) 1987-05-26
FR2558319A1 (fr) 1985-07-19

Similar Documents

Publication Publication Date Title
DE3500295C2 (US06580902-20030617-M00005.png)
DE2546116C2 (de) Digitaldatendetektor
DE69736188T2 (de) Verfahren in einem digitalen quadraturmodulator und -demodulator sowie digitaler quadraturmodulator und -demodulator
DE69631067T2 (de) Numerischer spannungsgesteuerter oszillator
DE4241882A1 (US06580902-20030617-M00005.png)
DE19515037A1 (de) Digitale Signalmodulationsanalysevorrichtung
DE2627446C2 (de) Anordnung zur Kompensation des Trägerphasenfehlers in einem Empfänger für diskrete Datenwerte
DE60131407T2 (de) Empfängerschaltung
DE19713441A1 (de) Parametermeßeinrichtung für digitale Quadraturmodulationssignale
DE2648976B2 (de) Zeitsteuerungsschaltung in Kombination mit einem Demodulator in einer differentiell kohärenten PSK-Daten-übertragungsanlage
CH624518A5 (US06580902-20030617-M00005.png)
DE2656924C3 (de) Phasendiskriminator in einem Empfänger eines Datenübertragungssystems
DE69636616T2 (de) Differentialdetektor für PSK-Signale
DE3030145C2 (de) Phasensynchronisationsschaltkreis für die Übertragung von Signalen mit mehrstufiger, mehrphasiger Überlagerungsmodulation
EP0230559B1 (de) Verfahren zur Taktsynchronisation eines Signalempfängers
DE2845166C2 (US06580902-20030617-M00005.png)
DE602004011060T2 (de) Verfahren und Vorrichtung zur Null-Mischungs-Spektrumanalyse mit Hilbert-Transformation
DE69632983T2 (de) Verfahren und Schaltung zur Korrektur des Amplitudenfehlers und Phasenfehlers eines Trägersignals
DE10000958B4 (de) Schaltungsanordnung zur Erzeugung eines quadraturamplitudenmodulierten Sendesignals
DE2845210C2 (US06580902-20030617-M00005.png)
DE2416058B2 (de) Verfahren und Schaltungsanordnungen zur Entzerrung eines quadraturmodulierten Datensignals
EP0786921B1 (de) Digitaler Demodulator
DE2058450A1 (de) Verfahren und Geraet zur Wiedergabe von empfangenen Datensignalen
CH648971A5 (de) Daten-modem.
DE2602916C2 (US06580902-20030617-M00005.png)

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee