FR2406345A1 - Systeme et procede de modulation-demodulation pour transmission numerique par fibres optiques - Google Patents

Systeme et procede de modulation-demodulation pour transmission numerique par fibres optiques

Info

Publication number
FR2406345A1
FR2406345A1 FR7828450A FR7828450A FR2406345A1 FR 2406345 A1 FR2406345 A1 FR 2406345A1 FR 7828450 A FR7828450 A FR 7828450A FR 7828450 A FR7828450 A FR 7828450A FR 2406345 A1 FR2406345 A1 FR 2406345A1
Authority
FR
France
Prior art keywords
modulation
signal
pam
optical fibers
digital transmission
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
FR7828450A
Other languages
English (en)
Other versions
FR2406345B1 (fr
Inventor
Renato Dogliotti
Giancarlo Pirani
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.)
Telecom Italia SpA
Original Assignee
CSELT Centro Studi e Laboratori Telecomunicazioni SpA
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 e Laboratori Telecomunicazioni SpA filed Critical CSELT Centro Studi e Laboratori Telecomunicazioni SpA
Publication of FR2406345A1 publication Critical patent/FR2406345A1/fr
Application granted granted Critical
Publication of FR2406345B1 publication Critical patent/FR2406345B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes
    • H04L25/4908—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes using mBnB codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Dc Digital Transmission (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Ce système de modulation PAM-PPM convient pour la modulation-démodulation de signaux numériques. Le signal binaire à transmettre est codé d'après un code qui utilise trois formes d'ondes obtenues en modulant, en amplitude et en position PAM-PPM, les impulsions d'un signal lumineux, ce codage étant tel que les huit combinaisons des trois bits du signal binaire correspondent à huit combinaisons de deux formes d'onde et le signal reçu, codé d'après la modulation PAM-PPM, est amené à interagir avec un signal en dents de scie de période T, dûment synchronisé avec le signal reçu; le signal ainsi modifié étant intégré, échantillonné et comparé avec des seuils prédéterminés.
FR7828450A 1977-10-13 1978-10-05 Systeme et procede de modulation-demodulation pour transmission numerique par fibres optiques Granted FR2406345A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6927777A IT1091439B (it) 1977-10-13 1977-10-13 Procedimento e sistema di modulazione e demodulazione per trasmissione numerica

Publications (2)

Publication Number Publication Date
FR2406345A1 true FR2406345A1 (fr) 1979-05-11
FR2406345B1 FR2406345B1 (fr) 1983-07-22

Family

ID=11311740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828450A Granted FR2406345A1 (fr) 1977-10-13 1978-10-05 Systeme et procede de modulation-demodulation pour transmission numerique par fibres optiques

Country Status (8)

Country Link
US (1) US4201909A (fr)
JP (1) JPS5461815A (fr)
CA (1) CA1107822A (fr)
DE (1) DE2844293C3 (fr)
FR (1) FR2406345A1 (fr)
GB (1) GB2006429B (fr)
IT (1) IT1091439B (fr)
NL (1) NL182268C (fr)

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DE3061481D1 (en) * 1979-04-17 1983-02-03 Marconi Avionics Data transmission systems
DE2944459C2 (de) * 1979-11-03 1984-04-26 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zum Übertragen von Bipolarsignalen mittels eines optischen Senders
US4249266A (en) * 1979-11-06 1981-02-03 Perkins Research & Mfg. Co., Inc. Fiber optics communication system
JPS57164662A (en) * 1981-04-03 1982-10-09 Hitachi Ltd Compression system for multilevel signal
DE3117221A1 (de) * 1981-04-30 1983-02-03 Siemens AG, 1000 Berlin und 8000 München Umsetzung von binaeren signalen fuer lichtwellenleiteruebertragungssysteme
US4918689A (en) * 1985-10-10 1990-04-17 Bell Communications Research, Inc. Asynchronous communication system
JPH01174257U (fr) * 1988-05-31 1989-12-11
GB2235076B (en) * 1989-08-17 1994-05-04 Asahi Optical Co Ltd Camera data communication method and camera
FR2652215B1 (fr) * 1989-09-19 1994-06-10 France Etat Procede de codage d'un signal numerique, codeur et decodeur pour la mise en óoeuvre de ce procede, procede de regeneration et regenerateur correspondant.
JPH0424814U (fr) * 1990-06-22 1992-02-27
US5969839A (en) * 1995-07-10 1999-10-19 Fuji Electric Co., Ltd. Optical communications device
US5825823A (en) * 1997-06-06 1998-10-20 General Datacomm, Inc. PCM channel diagnosis
EP1131927A1 (fr) * 1998-11-16 2001-09-12 Siemens Aktiengesellschaft Procede de regler un emetteur a une puissance d'emission
US7173551B2 (en) * 2000-12-21 2007-02-06 Quellan, Inc. Increasing data throughput in optical fiber transmission systems
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
EP1384338B1 (fr) * 2001-04-04 2010-12-15 Quellan, Inc. Procede et systeme permettant de decoder des signaux multiniveau
WO2002091565A2 (fr) * 2001-05-04 2002-11-14 Ok-Sang Jin Procede d'amplification de signaux, amplificateur de signaux et dispositifs correspondants
AU2003211094A1 (en) * 2002-02-15 2003-09-09 Quellan, Inc. Multi-level signal clock recovery technique
US8639127B2 (en) * 2002-03-06 2014-01-28 Alcatel Lucent Method and apparatus for improved jitter tolerance
AU2003256569A1 (en) * 2002-07-15 2004-02-02 Quellan, Inc. Adaptive noise filtering and equalization
AU2003287628A1 (en) * 2002-11-12 2004-06-03 Quellan, Inc. High-speed analog-to-digital conversion with improved robustness to timing uncertainty
SG112880A1 (en) * 2003-05-21 2005-07-28 Sony Corp Method and apparatus for modulating uwb signals
GB2421674B (en) * 2003-08-07 2006-11-15 Quellan Inc Method and system for crosstalk cancellation
US7804760B2 (en) * 2003-08-07 2010-09-28 Quellan, Inc. Method and system for signal emulation
EP1687929B1 (fr) 2003-11-17 2010-11-10 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
US7725079B2 (en) * 2004-12-14 2010-05-25 Quellan, Inc. Method and system for automatic control in an interference cancellation device
US7522883B2 (en) * 2004-12-14 2009-04-21 Quellan, Inc. Method and system for reducing signal interference
US7551670B2 (en) * 2005-07-15 2009-06-23 Git Japan, Inc. UWB communication device and UWB communication method
US9252983B2 (en) * 2006-04-26 2016-02-02 Intersil Americas LLC Method and system for reducing radiated emissions from a communications channel
EP2434648A1 (fr) * 2010-09-25 2012-03-28 ATLAS Elektronik GmbH Codeur et décodeur, procédé de codage et procédé de décodage ainsi que système constitué d'un codeur et d'un décodeur
JP6741497B2 (ja) 2016-07-01 2020-08-19 ラピスセミコンダクタ株式会社 信号変換装置、処理装置、通信システムおよび信号変換方法
CN106130637B (zh) * 2016-07-26 2018-06-01 桂林电子科技大学 一种基于led的可见光通信系统和方法
US11463288B2 (en) * 2021-06-14 2022-10-04 Ultralogic 6G, Llc Amplitude-variation encoding for high-density 5G/6G modulation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865018A (en) * 1954-06-25 1958-12-16 Raytheon Mfg Co Intelligence transmission

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US3281806A (en) * 1962-12-21 1966-10-25 Honeywell Inc Pulse width modulation representation of paired binary digits
US4103234A (en) * 1967-11-24 1978-07-25 General Dynamics Corp. System for transmission storage and/or multiplexing of information
US3792454A (en) * 1972-01-03 1974-02-12 Honeywell Inf Systems Magnetic strorage system using alternate codes to reduce write current bias
US3920898A (en) * 1974-05-30 1975-11-18 Xerox Corp Non-synchronous duobinary encoding
US3993862A (en) * 1974-07-05 1976-11-23 Lawrence Karr Data compression
DE2530812B2 (de) * 1975-07-10 1977-08-18 Loewe Opta Gmbh, 1000 Berlin Digitales impulsuebertragungsverfahren fuer eine infrarot-fernbedienung
JPS5261424A (en) * 1975-11-17 1977-05-20 Olympus Optical Co Ltd Encode system
US4008390A (en) * 1976-03-15 1977-02-15 Bell Telephone Laboratories, Incorporated Optical pulse transmission system
FR2361024A1 (fr) * 1976-08-04 1978-03-03 Cit Alcatel Procede de codage par transitions d'informations binaires et dispositifs de codage et de decodage correspondants

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865018A (en) * 1954-06-25 1958-12-16 Raytheon Mfg Co Intelligence transmission

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
EXBK/72 *
EXBK/73 *
EXBK/75 *
EXBK/76 *

Also Published As

Publication number Publication date
NL182268C (nl) 1988-02-01
DE2844293A1 (de) 1979-04-19
US4201909A (en) 1980-05-06
GB2006429B (en) 1982-03-24
DE2844293C3 (de) 1981-08-27
GB2006429A (en) 1979-05-02
NL7810272A (nl) 1979-04-18
NL182268B (nl) 1987-09-01
DE2844293B2 (fr) 1980-08-21
JPS5461815A (en) 1979-05-18
FR2406345B1 (fr) 1983-07-22
JPS6115624B2 (fr) 1986-04-25
IT1091439B (it) 1985-07-06
CA1107822A (fr) 1981-08-25

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