FR2245139A2 - Transmission by pulse coded carrier - has transmission channel frequency response correction - Google Patents

Transmission by pulse coded carrier - has transmission channel frequency response correction

Info

Publication number
FR2245139A2
FR2245139A2 FR7431225A FR7431225A FR2245139A2 FR 2245139 A2 FR2245139 A2 FR 2245139A2 FR 7431225 A FR7431225 A FR 7431225A FR 7431225 A FR7431225 A FR 7431225A FR 2245139 A2 FR2245139 A2 FR 2245139A2
Authority
FR
France
Prior art keywords
transmission
frequency response
pulse coded
pulses
channel frequency
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7431225A
Other languages
French (fr)
Other versions
FR2245139B2 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19732318800 external-priority patent/DE2318800C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2245139A2 publication Critical patent/FR2245139A2/en
Application granted granted Critical
Publication of FR2245139B2 publication Critical patent/FR2245139B2/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/24—Relay circuits using discharge tubes or semiconductor devices
    • H04L25/242—Relay circuits using discharge tubes or semiconductor devices with retiming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Transmission of analogue information is effected by pulse coded carrier frequency transmission between two terminals connected by symmetric or coaxial cables. Correction is applied to counter-act the frequency response characteristics of the transmission channels. Pulses are converted in an input converter (40) from two trains of unipolar pulses into two trains of bipolar pulses and are sent to two input terminals of a symmetrical double digital modulator to be modulated with a carrier frequency derived from the timing oscillations. A base band regenerator (50) contains an adjustable distortion corrector (51) as well as the timing oscillator (56). This corrector circuit compensates for the frequency response of the transmission channels.
FR7431225A 1973-04-13 1974-09-16 Transmission by pulse coded carrier - has transmission channel frequency response correction Granted FR2245139A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732318800 DE2318800C3 (en) 1973-04-13 Messaging system
DE19732347684 DE2347684C3 (en) 1973-09-21 Method and arrangement for demodulating and regenerating carrier-frequency digital signals

Publications (2)

Publication Number Publication Date
FR2245139A2 true FR2245139A2 (en) 1975-04-18
FR2245139B2 FR2245139B2 (en) 1980-03-21

Family

ID=25764976

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7431225A Granted FR2245139A2 (en) 1973-04-13 1974-09-16 Transmission by pulse coded carrier - has transmission channel frequency response correction

Country Status (2)

Country Link
FR (1) FR2245139A2 (en)
NL (1) NL7412514A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR205105A1 (en) * 1974-02-19 1976-04-05 Siemens Ag CODED PULSE MODULATION REGENERATOR

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355549A (en) * 1963-11-27 1967-11-28 Ortronix Inc Universal repeater
US3701023A (en) * 1971-06-29 1972-10-24 Ibm Phase jitter extraction method for data transmission systems
US3737585A (en) * 1971-06-16 1973-06-05 Itt Regenerative pcm line repeater

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355549A (en) * 1963-11-27 1967-11-28 Ortronix Inc Universal repeater
US3737585A (en) * 1971-06-16 1973-06-05 Itt Regenerative pcm line repeater
US3701023A (en) * 1971-06-29 1972-10-24 Ibm Phase jitter extraction method for data transmission systems

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Livre JA: 'Microwave Communication, System design and New Equipment', édité par YONEZAWA, Marusen Cy Ltd, Tokyo 1970, chapitre 13, paragraphe 3: 'PCM Repeater', pages 442 à 446 *
Publication US: 'IEEE International Conference On Communications I.C.C. 71', tenue à Montréal, Canada au 14,15,16 juin 1971, article: 'Compatibility of PCM and FDM systems in the same cable sheath', auteur: SWARTZ, pages 38-18 à 38- 25 *
Revue DE 'Technische Mitteilungen AEG-TELEFUNKEN', vol. 64, no. 2, 3 février-mars 1974, article: 'Pulscodemodulation-Sekundärsystem PCM 120', auteur: SCHEUING, pages 67 à 69 *

Also Published As

Publication number Publication date
NL7412514A (en) 1975-03-25
FR2245139B2 (en) 1980-03-21

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