IT980147B - Modulatore a piu livelli per un segnale coerente a sfasamento manipolato - Google Patents

Modulatore a piu livelli per un segnale coerente a sfasamento manipolato

Info

Publication number
IT980147B
IT980147B IT49346/73A IT4934673A IT980147B IT 980147 B IT980147 B IT 980147B IT 49346/73 A IT49346/73 A IT 49346/73A IT 4934673 A IT4934673 A IT 4934673A IT 980147 B IT980147 B IT 980147B
Authority
IT
Italy
Prior art keywords
coherent signal
multiple level
level modulator
manipulated offset
manipulated
Prior art date
Application number
IT49346/73A
Other languages
English (en)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of IT980147B publication Critical patent/IT980147B/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
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2014—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes in a piecewise linear manner during each symbol period, e.g. minimum shift keying, fast frequency shift keying

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Optical Communication System (AREA)
IT49346/73A 1972-04-12 1973-04-10 Modulatore a piu livelli per un segnale coerente a sfasamento manipolato IT980147B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24331972A 1972-04-12 1972-04-12

Publications (1)

Publication Number Publication Date
IT980147B true IT980147B (it) 1974-09-30

Family

ID=22918265

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49346/73A IT980147B (it) 1972-04-12 1973-04-10 Modulatore a piu livelli per un segnale coerente a sfasamento manipolato

Country Status (6)

Country Link
US (1) US3750051A (it)
JP (1) JPS4918255A (it)
BE (1) BE797939A (it)
DE (1) DE2317675A1 (it)
FR (1) FR2179916A1 (it)
IT (1) IT980147B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909750A (en) * 1974-06-10 1975-09-30 Bell Telephone Labor Inc Apparatus for encoding a binary signal into a frequency modulated coherent phase-shift keyed signal
US4290140A (en) * 1978-02-23 1981-09-15 Northrop Corporation Combined coherent frequency and phase shift keying modulation system
FR2469063B1 (fr) * 1979-10-31 1987-10-23 Brossard Pierre Modulations binaires a deplacement de phase et modulateurs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242262A (en) * 1961-09-21 1966-03-22 Ibm Method and apparatus for transmitting binary data
US3307152A (en) * 1963-05-31 1967-02-28 Gen Electric Data transmission system with control character insertions
US3601701A (en) * 1969-09-25 1971-08-24 Collins Radio Co Bi-phase keyed modulator-demodulator system
GB1324998A (en) * 1969-11-19 1973-07-25 Emi Ltd Phase modulators
GB1304188A (it) * 1969-12-09 1973-01-24

Also Published As

Publication number Publication date
US3750051A (en) 1973-07-31
JPS4918255A (it) 1974-02-18
DE2317675A1 (de) 1973-10-18
FR2179916A1 (it) 1973-11-23
BE797939A (fr) 1973-07-31

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