NL167567C - Stelsel voor digitale overdracht onder toepassing van een vierfasenmodulatiestelsel. - Google Patents

Stelsel voor digitale overdracht onder toepassing van een vierfasenmodulatiestelsel.

Info

Publication number
NL167567C
NL167567C NL7409296.A NL7409296A NL167567C NL 167567 C NL167567 C NL 167567C NL 7409296 A NL7409296 A NL 7409296A NL 167567 C NL167567 C NL 167567C
Authority
NL
Netherlands
Prior art keywords
phase modulation
digital transfer
transfer system
modulation system
digital
Prior art date
Application number
NL7409296.A
Other languages
English (en)
Other versions
NL167567B (nl
NL7409296A (nl
Original Assignee
Cselt Centro Studi Lab Telecom
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 Cselt Centro Studi Lab Telecom filed Critical Cselt Centro Studi Lab Telecom
Publication of NL7409296A publication Critical patent/NL7409296A/nl
Publication of NL167567B publication Critical patent/NL167567B/nl
Application granted granted Critical
Publication of NL167567C publication Critical patent/NL167567C/nl

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
NL7409296.A 1973-07-12 1974-07-09 Stelsel voor digitale overdracht onder toepassing van een vierfasenmodulatiestelsel. NL167567C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69081/73A IT991725B (it) 1973-07-12 1973-07-12 Sistema di modulazione quadrifase per trasmissione di informazioni numeriche

Publications (3)

Publication Number Publication Date
NL7409296A NL7409296A (nl) 1975-01-14
NL167567B NL167567B (nl) 1981-07-16
NL167567C true NL167567C (nl) 1981-12-16

Family

ID=11311299

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7409296.A NL167567C (nl) 1973-07-12 1974-07-09 Stelsel voor digitale overdracht onder toepassing van een vierfasenmodulatiestelsel.

Country Status (7)

Country Link
US (1) US3914695A (nl)
CA (1) CA1060554A (nl)
CH (1) CH596719A5 (nl)
GB (1) GB1478661A (nl)
IT (1) IT991725B (nl)
NL (1) NL167567C (nl)
SE (1) SE394565B (nl)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106007A (en) * 1974-07-17 1978-08-08 New England Power Service Company Method and apparatus for transmitting intelligence over a carrier wave
US4180793A (en) * 1978-04-26 1979-12-25 The United States Of America As Represented By The Secretary Of The Navy PSK pulse synthesizer
IT1160910B (it) * 1978-10-27 1987-03-11 Cselt Centro Studi Lab Telecom Sistema di modulazione quadrifase per trasmissione di informazioni numeriche
US4311971A (en) * 1979-09-19 1982-01-19 Hazeltine Corporation Apparatus for generating constant-envelope, angle-modulated pulse signals
US4528526A (en) * 1983-05-31 1985-07-09 Motorola, Inc. PSK modulator with noncollapsable output for use with a PLL power amplifier
US4726038A (en) * 1985-01-22 1988-02-16 Fumio Ikegami Digital communication system
EP0197529B1 (de) * 1985-04-23 1992-02-05 Josef Dirr Verfahren für die analoge oder digitale Codierung von Information für die Verwendung bei Winkel- und Pulsmodulationsverfahren
US4937840A (en) * 1988-11-07 1990-06-26 William Hotine Circuit for pulsed biphase digital modulation
FR2652470A1 (fr) * 1989-09-28 1991-03-29 Alcatel Transmission Procede et dispositif de limitation des remontees de lobes secondaires dans une installation d'emission de puissance pour monoporteuse numerique a deux ou quatre etats de phase.
US6101225A (en) * 1998-04-29 2000-08-08 Motorola, Inc. Method and apparatus for performing a modulation
US6944141B1 (en) * 1999-10-22 2005-09-13 Lucent Technologies Inc. Systems and method for phase multiplexing in assigning frequency channels for a wireless communication network
US6993306B2 (en) * 2002-01-22 2006-01-31 Broadcom Corporation Determination and processing for fractional-N programming values

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051902A (en) * 1958-02-17 1962-08-28 Karl F Ross Angle-modulation system
US3423529A (en) * 1966-02-01 1969-01-21 Bell Telephone Labor Inc Automatic phase recovery in suppressed carrier quadrature modulated biternary communication systems

Also Published As

Publication number Publication date
GB1478661A (en) 1977-07-06
DE2431844A1 (de) 1975-01-30
NL167567B (nl) 1981-07-16
SE7408875L (sv) 1975-01-13
NL7409296A (nl) 1975-01-14
SE394565B (sv) 1977-06-27
IT991725B (it) 1975-08-30
CA1060554A (en) 1979-08-14
CH596719A5 (nl) 1978-03-15
US3914695A (en) 1975-10-21
DE2431844B2 (de) 1976-04-22

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee