IT1085102B - Circuito di sincronizzazione di fase - Google Patents

Circuito di sincronizzazione di fase

Info

Publication number
IT1085102B
IT1085102B IT21430/77A IT2143077A IT1085102B IT 1085102 B IT1085102 B IT 1085102B IT 21430/77 A IT21430/77 A IT 21430/77A IT 2143077 A IT2143077 A IT 2143077A IT 1085102 B IT1085102 B IT 1085102B
Authority
IT
Italy
Prior art keywords
synchronization circuit
phase synchronization
phase
circuit
synchronization
Prior art date
Application number
IT21430/77A
Other languages
English (en)
Original Assignee
Nippon 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 Nippon Electric Co filed Critical Nippon Electric Co
Application granted granted Critical
Publication of IT1085102B publication Critical patent/IT1085102B/it

Links

Classifications

    • 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
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • H04L27/3836—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using the received modulated signal or the received IF signal, e.g. by detecting a pilot or by frequency multiplication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IT21430/77A 1976-03-22 1977-03-21 Circuito di sincronizzazione di fase IT1085102B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51031023A JPS58698B2 (ja) 1976-03-22 1976-03-22 位相同期回路

Publications (1)

Publication Number Publication Date
IT1085102B true IT1085102B (it) 1985-05-28

Family

ID=12319907

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21430/77A IT1085102B (it) 1976-03-22 1977-03-21 Circuito di sincronizzazione di fase

Country Status (4)

Country Link
US (1) US4099130A (it)
JP (1) JPS58698B2 (it)
DE (1) DE2712381C3 (it)
IT (1) IT1085102B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5925500B2 (ja) * 1978-03-03 1984-06-18 日本電気株式会社 搬送波再生回路
US4334312A (en) * 1979-08-10 1982-06-08 Nippon Electric Co., Ltd. Phase synchronizing circuit for use in multi-level, multi-phase, superposition-modulated signal transmission system
US4320345A (en) * 1980-04-28 1982-03-16 Sangamo Weston, Inc. Adaptive differential PSK demodulator
US4525676A (en) * 1981-02-24 1985-06-25 Nippon Electric Co., Ltd. PSK Demodulation system having carrier frequency variation compensation
JPS58194450A (ja) * 1982-05-07 1983-11-12 Nec Corp 復調装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5716546B2 (it) * 1973-07-12 1982-04-06
US4039961A (en) * 1974-09-12 1977-08-02 Nippon Telegraph And Telephone Public Corporation Demodulator for combined digital amplitude and phase keyed modulation signals
JPS5297661A (en) * 1976-02-13 1977-08-16 Nippon Telegr & Teleph Corp <Ntt> Carrier wave reproduction equipment

Also Published As

Publication number Publication date
JPS58698B2 (ja) 1983-01-07
DE2712381B2 (de) 1979-09-06
JPS52114256A (en) 1977-09-24
US4099130A (en) 1978-07-04
DE2712381C3 (de) 1980-05-22
DE2712381A1 (de) 1977-09-29

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950327