IT1067845B - Circuito rigeneratore di portante specie di un sistema di modulazione a risposta parziale - Google Patents

Circuito rigeneratore di portante specie di un sistema di modulazione a risposta parziale

Info

Publication number
IT1067845B
IT1067845B IT26366/76A IT2636676A IT1067845B IT 1067845 B IT1067845 B IT 1067845B IT 26366/76 A IT26366/76 A IT 26366/76A IT 2636676 A IT2636676 A IT 2636676A IT 1067845 B IT1067845 B IT 1067845B
Authority
IT
Italy
Prior art keywords
modulation system
partial response
regenerator circuit
carrier regenerator
species
Prior art date
Application number
IT26366/76A
Other languages
English (en)
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of IT1067845B publication Critical patent/IT1067845B/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)
  • Dc Digital Transmission (AREA)
IT26366/76A 1975-08-20 1976-08-19 Circuito rigeneratore di portante specie di un sistema di modulazione a risposta parziale IT1067845B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50100762A JPS5224410A (en) 1975-08-20 1975-08-20 Carrier wave regenerative circuit

Publications (1)

Publication Number Publication Date
IT1067845B true IT1067845B (it) 1985-03-21

Family

ID=14282510

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26366/76A IT1067845B (it) 1975-08-20 1976-08-19 Circuito rigeneratore di portante specie di un sistema di modulazione a risposta parziale

Country Status (5)

Country Link
US (1) US4114710A (it)
JP (1) JPS5224410A (it)
CA (1) CA1071718A (it)
GB (1) GB1555149A (it)
IT (1) IT1067845B (it)

Families Citing this family (12)

* 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
US4503545A (en) * 1980-02-19 1985-03-05 Paradyne Corporation System for evaluating transmission line impairments
US4562426A (en) * 1982-11-08 1985-12-31 Codex Corporation Symbol coding apparatus
US4489418A (en) * 1983-04-18 1984-12-18 At&T Bell Laboratories Differential encoding technique
US4483012A (en) * 1983-04-18 1984-11-13 At&T Information Systems Differentially convolutional channel coding with expanded set of signalling alphabets
JPH0714170B2 (ja) * 1983-11-30 1995-02-15 富士通株式会社 搬送波再生回路
US4964162A (en) * 1985-09-09 1990-10-16 Trw Inc. Secure television signal encoding and decoding system
US4712240A (en) * 1986-03-26 1987-12-08 Trw Inc. Transmission and reception of television broadcast in high-fidelity stereo audio
JPH0748675B2 (ja) * 1987-08-21 1995-05-24 日本電気株式会社 デジタル伝送方式
US5095497A (en) * 1989-10-02 1992-03-10 At & T Bell Laboratories Technique for achieving the full coding gain of encoded digital signals
JPH10145348A (ja) * 1996-09-13 1998-05-29 Nec Corp クロック抽出回路
JP3474794B2 (ja) * 1999-02-03 2003-12-08 日本電信電話株式会社 符号変換回路及び符号変換多重化回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529290A (en) * 1968-05-10 1970-09-15 Bell Telephone Labor Inc Nonredundant error detection and correction system
US3590381A (en) * 1969-03-17 1971-06-29 Int Communications Corp Digital differential angle demodulator
US3845412A (en) * 1973-10-12 1974-10-29 Microwave Ass Inc Digital modulate/demodulate system
US3984634A (en) * 1973-11-02 1976-10-05 The United States Of America Anti-multipath digital signal detector
FR2296322A1 (fr) * 1974-12-27 1976-07-23 Ibm France Systeme de detection de donnees numeriques transmises par modulation d'une porteuse
US4010323A (en) * 1975-10-29 1977-03-01 Bell Telephone Laboratories, Incorporated Digital timing recovery

Also Published As

Publication number Publication date
JPS5224410A (en) 1977-02-23
US4114710A (en) 1978-09-19
GB1555149A (en) 1979-11-07
CA1071718A (en) 1980-02-12

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