FR1573670A - - Google Patents

Info

Publication number
FR1573670A
FR1573670A FR1573670DA FR1573670A FR 1573670 A FR1573670 A FR 1573670A FR 1573670D A FR1573670D A FR 1573670DA FR 1573670 A FR1573670 A FR 1573670A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1573670A publication Critical patent/FR1573670A/fr
Expired 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated 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
    • H04L27/2053—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR1573670D 1967-10-02 1968-07-18 Expired FR1573670A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67234667A 1967-10-02 1967-10-02

Publications (1)

Publication Number Publication Date
FR1573670A true FR1573670A (fr) 1969-07-04

Family

ID=24698158

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1573670D Expired FR1573670A (fr) 1967-10-02 1968-07-18

Country Status (5)

Country Link
US (1) US3518680A (fr)
DE (1) DE1762655B2 (fr)
FR (1) FR1573670A (fr)
GB (1) GB1168410A (fr)
NL (1) NL6810380A (fr)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737578A (en) * 1968-06-29 1973-06-05 Nippon Electric Co Phase synchronizing circuit
US3732375A (en) * 1969-01-24 1973-05-08 Nippon Electric Co Paired signal transmission system utilizing quadrature modulation
US3681695A (en) * 1969-09-02 1972-08-01 Raytheon Co Multipath compensation system
US3660764A (en) * 1969-11-26 1972-05-02 Bell Telephone Labor Inc Non-coherent differential phase detection
US3688196A (en) * 1970-11-02 1972-08-29 Control Data Corp Quadrature transmission modern using single sideband data detection
US3710261A (en) * 1970-12-24 1973-01-09 G Low Data-aided carrier tracking loops
GB1368068A (en) * 1971-10-20 1974-09-25 Post Office Digital communication systems
FR2167420B1 (fr) * 1972-01-14 1976-01-16 Telecommunications Sa Fr
US3813483A (en) * 1972-06-01 1974-05-28 Anritsu Electric Co Ltd Facsimile system
FR2191796A5 (fr) * 1972-06-26 1974-02-01 Sagem
US3800227A (en) * 1972-07-24 1974-03-26 Nasa Pulse code modulated signal synchronizer
SE393726B (sv) * 1975-12-02 1977-05-16 Ericsson Telefon Ab L M Anleggning for duplexoverforing medelst fasmultiplex over en tvatradsforbindelse mellan en huvudterminal och en slavterminal
JPS52119853A (en) * 1976-04-01 1977-10-07 Toshiba Corp Automatic phase control circuit
FR2431795A1 (fr) * 1978-07-18 1980-02-15 Telecommunications Sa Demodulateur numerique a niveaux de phase
FR2445078A1 (fr) * 1978-12-20 1980-07-18 Ibm France Procede et dispositif pour detecter une sequence pseudo-aleatoire de deux symboles dans un recepteur de donnees utilisant une modulation a double bande laterale-porteuses en quadrature
US4293945A (en) * 1979-08-29 1981-10-06 Communications Satellite Corporation Multichannel correlation receiver for determining depolarization of signals along signal propagation paths
US4383324A (en) * 1979-11-16 1983-05-10 The General Electric Company Limited Digital data transmission systems
US4384364A (en) * 1980-04-04 1983-05-17 Bell Telephone Laboratories, Incorporated Quadrature modulation arrangement with enhanced dynamic amplification range
US4397039A (en) * 1980-12-29 1983-08-02 International Business Machines Corporation Instantaneous phase tracking in single sideband systems
US4455664A (en) * 1981-12-07 1984-06-19 Motorola Inc. Carrier data operated squelch
NL8203600A (nl) * 1982-09-17 1984-04-16 Philips Nv Hoofdeinde en ontvanger voor een signaaldistributiesysteem.
US4575861A (en) * 1983-04-08 1986-03-11 The Charles Stark Draper Laboratory Quadrature multiplexed post correlation IF channel
US4567602A (en) * 1983-06-13 1986-01-28 Canadian Patents And Development Limited Correlated signal processor
US4586186A (en) * 1983-08-08 1986-04-29 At&T Bell Laboratories Maintenance response signalling arrangement for a digital transmission system
JPH0714170B2 (ja) * 1983-11-30 1995-02-15 富士通株式会社 搬送波再生回路
DE3401944A1 (de) * 1984-01-20 1985-08-01 Siemens AG, 1000 Berlin und 8000 München 1 bit/1 bit-digitalkorrelator
US4646325A (en) * 1985-04-15 1987-02-24 Paradyne Corporation Index decoder for digital modems
US4794623A (en) * 1985-10-17 1988-12-27 At&T Telephone And Telegraph Company, At&T Bell Laboratories Recovery of carrier signal from QAM double sideband suppressed carrier IF signal for use in synchronous demodulation
US4773083A (en) * 1985-11-08 1988-09-20 Raytheon Company QPSK demodulator
US4769816A (en) * 1985-11-08 1988-09-06 Raytheon Company Qpsk demodulator
US4821287A (en) * 1987-10-21 1989-04-11 F. L. Jennings Apparatus and method for detecting digital carrier synchronization problems
US20020048333A1 (en) * 2000-05-25 2002-04-25 Nadeem Ahmed Joint detection in OFDM systems
DE102004050648A1 (de) * 2004-10-18 2006-04-20 Rohde & Schwarz Gmbh & Co. Kg Anordnung zur synchronen Ausgabe von in zwei oder mehr Digitale/Analog-Wandlern erzeugten Analogsignalen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031529A (en) * 1958-07-21 1962-04-24 Philco Corp Phase-frequency control system for carrier-multiplex receiver
US3289082A (en) * 1963-05-31 1966-11-29 Gen Electric Phase shift data transmission system with phase-coherent data recovery
US3447085A (en) * 1965-01-04 1969-05-27 Gen Dynamics Corp Synchronization of receiver time base in plural frequency differential phase shift system
US3384824A (en) * 1965-12-14 1968-05-21 Bell Telephone Labor Inc Phase quadrature transmission system with receiver detectors controlled in response to presence of pilot waves appearing as crosstalk

Also Published As

Publication number Publication date
GB1168410A (en) 1969-10-22
DE1762655A1 (de) 1970-07-02
US3518680A (en) 1970-06-30
DE1762655B2 (de) 1971-05-13
NL6810380A (fr) 1969-04-08

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Legal Events

Date Code Title Description
ST Notification of lapse