FR2794913B1 - Procede de controle de la qualite d'un signal numerique et dispositif de communication utilisant ce procede - Google Patents

Procede de controle de la qualite d'un signal numerique et dispositif de communication utilisant ce procede

Info

Publication number
FR2794913B1
FR2794913B1 FR0007547A FR0007547A FR2794913B1 FR 2794913 B1 FR2794913 B1 FR 2794913B1 FR 0007547 A FR0007547 A FR 0007547A FR 0007547 A FR0007547 A FR 0007547A FR 2794913 B1 FR2794913 B1 FR 2794913B1
Authority
FR
France
Prior art keywords
quality
controlling
communication device
same
digital signal
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.)
Expired - Fee Related
Application number
FR0007547A
Other languages
English (en)
Other versions
FR2794913A1 (fr
Inventor
Mitsuru Sugawara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Publication of FR2794913A1 publication Critical patent/FR2794913A1/fr
Application granted granted Critical
Publication of FR2794913B1 publication Critical patent/FR2794913B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/03—WDM arrangements
    • H04J14/0305—WDM arrangements in end terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Dc Digital Transmission (AREA)
FR0007547A 1999-06-14 2000-06-14 Procede de controle de la qualite d'un signal numerique et dispositif de communication utilisant ce procede Expired - Fee Related FR2794913B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16755099A JP4180738B2 (ja) 1999-06-14 1999-06-14 デジタル信号品質モニタ方法とこの方法を用いた通信装置

Publications (2)

Publication Number Publication Date
FR2794913A1 FR2794913A1 (fr) 2000-12-15
FR2794913B1 true FR2794913B1 (fr) 2005-04-08

Family

ID=15851805

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0007547A Expired - Fee Related FR2794913B1 (fr) 1999-06-14 2000-06-14 Procede de controle de la qualite d'un signal numerique et dispositif de communication utilisant ce procede

Country Status (4)

Country Link
US (1) US6718138B1 (fr)
JP (1) JP4180738B2 (fr)
FR (1) FR2794913B1 (fr)
GB (1) GB2352597B (fr)

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US7173551B2 (en) * 2000-12-21 2007-02-06 Quellan, Inc. Increasing data throughput in optical fiber transmission systems
EP1282256B1 (fr) * 2001-08-01 2006-10-04 Alcatel Mesure de l'ouverture de l'oeil d'un signal
JP3447053B2 (ja) * 2001-03-09 2003-09-16 インターナショナル・ビジネス・マシーンズ・コーポレーション 組み合わせ回路、該組み合わせ回路を使用する符号化装置、復号装置、および半導体デバイス
US7149256B2 (en) * 2001-03-29 2006-12-12 Quellan, Inc. Multilevel pulse position modulation for efficient fiber optic communication
US7307569B2 (en) * 2001-03-29 2007-12-11 Quellan, Inc. Increasing data throughput in optical fiber transmission systems
ATE492076T1 (de) 2001-04-04 2011-01-15 Quellan Inc Verfahren und system zum decodieren von mehrpegelsignalen
JP2002330104A (ja) * 2001-04-27 2002-11-15 Mitsubishi Electric Corp 受信装置
US7146098B1 (en) * 2001-12-20 2006-12-05 Nortel Networks Limited Optical protection scheme
AU2003211094A1 (en) * 2002-02-15 2003-09-09 Quellan, Inc. Multi-level signal clock recovery technique
US7035361B2 (en) * 2002-07-15 2006-04-25 Quellan, Inc. Adaptive noise filtering and equalization for optimal high speed multilevel signal decoding
US7146099B2 (en) * 2002-11-05 2006-12-05 Siemens Communications, Inc. Method and apparatus for optical signal and noise analysis using pulse amplitude histogram
US7934144B2 (en) * 2002-11-12 2011-04-26 Quellan, Inc. High-speed analog-to-digital conversion with improved robustness to timing uncertainty
US20050149791A1 (en) * 2002-12-05 2005-07-07 Fujitsu Limited Digital signal receiving apparatus, an optical transmission apparatus therewith, and a discriminating point control method
JP4138557B2 (ja) * 2003-03-31 2008-08-27 富士通株式会社 波長分散補償制御システム
GB2401291B (en) * 2003-05-01 2005-12-28 Phyworks Ltd Receiver
US7804760B2 (en) * 2003-08-07 2010-09-28 Quellan, Inc. Method and system for signal emulation
JP2007502054A (ja) * 2003-08-07 2007-02-01 ケラン インコーポレイテッド クロストークキャンセルのための方法とシステム
KR100982512B1 (ko) 2003-10-10 2010-09-16 삼성전자주식회사 아이 패턴을 이용한 신호 품질 측정 방법 및 장치
WO2005050896A2 (fr) * 2003-11-17 2005-06-02 Quellan, Inc. Procede et systeme d'annulation de brouillage d'antenne
US7616700B2 (en) * 2003-12-22 2009-11-10 Quellan, Inc. Method and system for slicing a communication signal
US7210856B2 (en) * 2004-03-02 2007-05-01 Welldynamics, Inc. Distributed temperature sensing in deep water subsea tree completions
US7558479B1 (en) * 2004-04-15 2009-07-07 Nortel Networks Limited Analysis and control of optical communications systems
US7641395B2 (en) 2004-06-22 2010-01-05 Halliburton Energy Serives, Inc. Fiber optic splice housing and integral dry mate connector system
WO2006035481A1 (fr) * 2004-09-27 2006-04-06 Mitsubishi Denki Kabushiki Kaisha Dispositif de branchement/insertion de longueur d’onde de lumière et méthode de récupération sur panne
US7522883B2 (en) 2004-12-14 2009-04-21 Quellan, Inc. Method and system for reducing signal interference
US7725079B2 (en) * 2004-12-14 2010-05-25 Quellan, Inc. Method and system for automatic control in an interference cancellation device
IL172301A0 (en) * 2005-12-01 2007-03-08 Eci Telecom Ltd Method and system for measuring average q - factor in optical networks
DE112007001045B4 (de) * 2006-04-26 2019-05-16 Intersil Americas LLC Verfahren und System zur Reduzierung von Strahlungs-Emissionen aus einem Kommunikationskanal
US8488961B2 (en) 2006-11-30 2013-07-16 Nec Corporation Dispersion determining apparatus and automatic dispersion compensating system using the same
FR2958049B1 (fr) * 2010-03-29 2012-09-14 Cnrs Centre National De Recherche Scient Dispositif et procede de traitement d'un signal optique
EP3013068A1 (fr) * 2014-10-22 2016-04-27 Alcatel Lucent Procédé pour générer des informations de commutation de protection
US10003453B1 (en) 2015-11-13 2018-06-19 Anritsu Company Phase synchronization of measuring instruments using free space transmission
US9860054B1 (en) * 2015-11-13 2018-01-02 Anritsu Company Real-time phase synchronization of a remote receiver with a measurement instrument
KR102022377B1 (ko) * 2017-12-18 2019-09-18 주식회사 포인투테크놀로지 위상 동기화 장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376309A (en) * 1981-05-29 1983-03-08 Bell Telephone Laboratories, Incorporated Method and apparatus for signal-eye tracking in digital transmission systems
CA2056679C (fr) * 1991-11-29 2002-02-12 Timothy Joseph Nohara Surveillance automatisee des conditions de canaux de communication numeriques utilisant les configurations de l'oeil
JP3072047B2 (ja) * 1995-03-22 2000-07-31 株式会社東芝 波長多重光伝送装置および光中継器
JP2976887B2 (ja) * 1996-06-19 1999-11-10 日本電気株式会社 受信特性評価方法および装置
JPH10206469A (ja) * 1997-01-17 1998-08-07 Nippon Telegr & Teleph Corp <Ntt> 信号レベル測定装置
JPH1188260A (ja) * 1997-09-09 1999-03-30 Fujitsu Ltd 光伝送路の分散補償装置
US6055078A (en) * 1998-05-01 2000-04-25 University Of Maryland Baltimore County Real time wavelength monitoring circuit
DE19850567C2 (de) * 1998-11-02 2001-02-15 Wandel & Goltermann Man Holdin Verwendung einer Schaltungsanordnung und Vorrichtung zur Messung der Signalgüte eines digitalen Nachrichtenübertragungssystems
DE19914793A1 (de) * 1999-03-31 2000-10-26 Siemens Ag Verfahren und Anordnung zur Messung der Signalqualität in einem optischen Übertragungssystem

Also Published As

Publication number Publication date
GB2352597B (en) 2002-09-11
JP2000358015A (ja) 2000-12-26
GB2352597A (en) 2001-01-31
GB0013794D0 (en) 2000-07-26
US6718138B1 (en) 2004-04-06
FR2794913A1 (fr) 2000-12-15
JP4180738B2 (ja) 2008-11-12

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Effective date: 20130228