IT1160910B - Sistema di modulazione quadrifase per trasmissione di informazioni numeriche - Google Patents

Sistema di modulazione quadrifase per trasmissione di informazioni numeriche

Info

Publication number
IT1160910B
IT1160910B IT69471/78A IT6947178A IT1160910B IT 1160910 B IT1160910 B IT 1160910B IT 69471/78 A IT69471/78 A IT 69471/78A IT 6947178 A IT6947178 A IT 6947178A IT 1160910 B IT1160910 B IT 1160910B
Authority
IT
Italy
Prior art keywords
transmission
phase modulation
numerical information
modulation system
numerical
Prior art date
Application number
IT69471/78A
Other languages
English (en)
Other versions
IT7869471A0 (it
Inventor
Giusto Pietro Porzio
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
Priority to IT69471/78A priority Critical patent/IT1160910B/it
Publication of IT7869471A0 publication Critical patent/IT7869471A0/it
Priority to EP79104126A priority patent/EP0010731B1/en
Priority to DE7979104126T priority patent/DE2965751D1/de
Application granted granted Critical
Publication of IT1160910B publication Critical patent/IT1160910B/it

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)
IT69471/78A 1978-10-27 1978-10-27 Sistema di modulazione quadrifase per trasmissione di informazioni numeriche IT1160910B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
IT69471/78A IT1160910B (it) 1978-10-27 1978-10-27 Sistema di modulazione quadrifase per trasmissione di informazioni numeriche
EP79104126A EP0010731B1 (en) 1978-10-27 1979-10-25 Quaternary modulation method for digital data transmission and device for realizing this method
DE7979104126T DE2965751D1 (en) 1978-10-27 1979-10-25 Quaternary modulation method for digital data transmission and device for realizing this method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT69471/78A IT1160910B (it) 1978-10-27 1978-10-27 Sistema di modulazione quadrifase per trasmissione di informazioni numeriche

Publications (2)

Publication Number Publication Date
IT7869471A0 IT7869471A0 (it) 1978-10-27
IT1160910B true IT1160910B (it) 1987-03-11

Family

ID=11312206

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69471/78A IT1160910B (it) 1978-10-27 1978-10-27 Sistema di modulazione quadrifase per trasmissione di informazioni numeriche

Country Status (3)

Country Link
EP (1) EP0010731B1 (it)
DE (1) DE2965751D1 (it)
IT (1) IT1160910B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US6101225A (en) * 1998-04-29 2000-08-08 Motorola, Inc. Method and apparatus for performing a modulation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406343A (en) * 1965-07-01 1968-10-15 Rca Corp Pm/am multiplex communication
DE2153376B2 (de) * 1971-10-27 1976-09-30 Fujitsu Ltd., Kawasaki, Kanagawa (Japan) Digitale nachrichtenuebertragungsanordnung
IT991725B (it) * 1973-07-12 1975-08-30 Cselt Centro Studi Lab Telecom Sistema di modulazione quadrifase per trasmissione di informazioni numeriche

Also Published As

Publication number Publication date
IT7869471A0 (it) 1978-10-27
DE2965751D1 (en) 1983-07-28
EP0010731A1 (en) 1980-05-14
EP0010731B1 (en) 1983-06-22

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