IT1144423B - Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili - Google Patents

Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili

Info

Publication number
IT1144423B
IT1144423B IT8168023A IT6802381A IT1144423B IT 1144423 B IT1144423 B IT 1144423B IT 8168023 A IT8168023 A IT 8168023A IT 6802381 A IT6802381 A IT 6802381A IT 1144423 B IT1144423 B IT 1144423B
Authority
IT
Italy
Prior art keywords
signal
effected
symbols
correction signal
signs
Prior art date
Application number
IT8168023A
Other languages
English (en)
Italian (it)
Other versions
IT8168023A0 (it
Inventor
Gianfranco Panarotto
Adler Tofanelli
Luigi Varetto
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 IT8168023A priority Critical patent/IT1144423B/it
Publication of IT8168023A0 publication Critical patent/IT8168023A0/it
Priority to JP57123036A priority patent/JPS5859643A/ja
Priority to EP82106619A priority patent/EP0071192A1/en
Priority to NO82822531A priority patent/NO822531L/no
Application granted granted Critical
Publication of IT1144423B publication Critical patent/IT1144423B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/235—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers combined with adaptive equaliser
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1423—Two-way operation using the same type of signal, i.e. duplex for simultaneous baseband signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/238—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Transmitters (AREA)
IT8168023A 1981-07-16 1981-07-23 Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili IT1144423B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT8168023A IT1144423B (it) 1981-07-23 1981-07-23 Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili
JP57123036A JPS5859643A (ja) 1981-07-16 1982-07-16 ２線式ワイヤ・ライン上で両方向のベ−スバンド・デイジタル送信方式
EP82106619A EP0071192A1 (en) 1981-07-23 1982-07-22 System for baseband digital transmission in both directions on a two-wire line
NO82822531A NO822531L (no) 1981-07-23 1982-07-22 System for digital basisbaandtransmisjon i begge retningene til en to-traadsledning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8168023A IT1144423B (it) 1981-07-23 1981-07-23 Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili

Publications (2)

Publication Number Publication Date
IT8168023A0 IT8168023A0 (it) 1981-07-23
IT1144423B true IT1144423B (it) 1986-10-29

Family

ID=11307265

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8168023A IT1144423B (it) 1981-07-16 1981-07-23 Sistema per la trasmissione numerica bidirezionale in banda su linea a due fili

Country Status (4)

Country Link
EP (1) EP0071192A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5859643A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1144423B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO822531L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1184949B (it) * 1985-05-14 1987-10-28 Sip Perfezionamento ai sistemi per la trasmissione numerica bidirezionale con cancellazione d eco
GB8616873D0 (en) * 1986-07-10 1986-08-20 British Telecomm Optical telecommunications system
US5353305A (en) * 1988-06-17 1994-10-04 Fujitsu Limited Initial training apparatus for use in a transmitter and receiver apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416367B (sv) * 1976-09-07 1980-12-15 Western Electric Co Ekoelimineringsanordning
GB2041702A (en) * 1979-02-01 1980-09-10 Standard Telephones Cables Ltd Digital transmission systems

Also Published As

Publication number Publication date
IT8168023A0 (it) 1981-07-23
JPS5859643A (ja) 1983-04-08
JPH039656B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-02-08
EP0071192A1 (en) 1983-02-09
NO822531L (no) 1983-01-24

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