FR2393481A1 - - Google Patents

Info

Publication number
FR2393481A1
FR2393481A1 FR7816303A FR7816303A FR2393481A1 FR 2393481 A1 FR2393481 A1 FR 2393481A1 FR 7816303 A FR7816303 A FR 7816303A FR 7816303 A FR7816303 A FR 7816303A FR 2393481 A1 FR2393481 A1 FR 2393481A1
Authority
FR
France
Prior art keywords
magnitude
offset voltage
regenerator
error
error density
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.)
Withdrawn
Application number
FR7816303A
Other languages
English (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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of FR2393481A1 publication Critical patent/FR2393481A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

La présente invention concerne un dispositif de surveillance de qualité de signaux numériques. Ce dispositif permet de déterminer la densité d'erreurs d'un signal transmis de façon numérique. L'amplitude d'une tension continue de décalage appliquée à un régénérateur A2 est commandée dans une boucle de contre-réaction 10 de façon à maintenir un taux d'erreurs constant entre sa sortie et celle d'un autre régénérateur A1. L'amplitude de la tension continue de décalage constitue une mesure de la dégradation du signal reçu et ainsi de la densité d'erreurs. Application aux transmissions radio numériques.
FR7816303A 1977-06-01 1978-05-31 Withdrawn FR2393481A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA279,661A CA1091778A (fr) 1977-06-01 1977-06-01 No translation available

Publications (1)

Publication Number Publication Date
FR2393481A1 true FR2393481A1 (fr) 1978-12-29

Family

ID=4108788

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816303A Withdrawn FR2393481A1 (fr) 1977-06-01 1978-05-31

Country Status (5)

Country Link
JP (1) JPS54913A (fr)
CA (1) CA1091778A (fr)
DE (1) DE2815613A1 (fr)
FR (1) FR2393481A1 (fr)
GB (1) GB1568352A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120030B (en) * 1982-03-04 1986-11-12 Sansui Electric Co Digital signal demodulator circuit
US4465335A (en) * 1982-10-12 1984-08-14 The United States Of America As Represented By The Secretary Of The Army Concentric core optical fiber coupler
CN112346000B (zh) * 2020-10-30 2022-07-08 国网山东省电力公司营销服务中心(计量中心) 一种智能电能表运行误差数据统计处理系统与方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873775A (en) * 1973-01-25 1975-03-25 Int Standard Electric Corp Method and an arrangement to indicate deterioration of PCM transmission quality
DE2625231A1 (de) * 1975-06-10 1976-12-16 Cselt Centro Studi Lab Telecom Vorrichtung zur pruefung der uebertragungsqualitaet in digitalsignalempfaengern
FR2317823A1 (fr) * 1975-07-09 1977-02-04 Thomson Csf Dispositif de mesure du taux d'erreur d'une liaison numerique bruitee
FR2412990A1 (fr) * 1977-12-05 1979-07-20 Legras Jacques Evaluation de la qualite d'une liaison numerique, d'un repeteur regenerateur ou d'un recepteur dans une telle liaison

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873775A (en) * 1973-01-25 1975-03-25 Int Standard Electric Corp Method and an arrangement to indicate deterioration of PCM transmission quality
DE2625231A1 (de) * 1975-06-10 1976-12-16 Cselt Centro Studi Lab Telecom Vorrichtung zur pruefung der uebertragungsqualitaet in digitalsignalempfaengern
US4034340A (en) * 1975-06-10 1977-07-05 Cselt - Centro Studi E Laboratori Telecomunicazioni Spa System for determining the quality of transmission of incoming digital message signals
FR2317823A1 (fr) * 1975-07-09 1977-02-04 Thomson Csf Dispositif de mesure du taux d'erreur d'une liaison numerique bruitee
FR2412990A1 (fr) * 1977-12-05 1979-07-20 Legras Jacques Evaluation de la qualite d'une liaison numerique, d'un repeteur regenerateur ou d'un recepteur dans une telle liaison

Also Published As

Publication number Publication date
DE2815613A1 (de) 1978-12-07
JPS54913A (en) 1979-01-06
GB1568352A (en) 1980-05-29
CA1091778A (fr) 1980-12-16

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Legal Events

Date Code Title Description
ST Notification of lapse