DE3687114D1 - Datenuebertragungssystem. - Google Patents

Datenuebertragungssystem.

Info

Publication number
DE3687114D1
DE3687114D1 DE8686307780T DE3687114T DE3687114D1 DE 3687114 D1 DE3687114 D1 DE 3687114D1 DE 8686307780 T DE8686307780 T DE 8686307780T DE 3687114 T DE3687114 T DE 3687114T DE 3687114 D1 DE3687114 D1 DE 3687114D1
Authority
DE
Germany
Prior art keywords
data
value
synchronization word
equalizer
symbol
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
DE8686307780T
Other languages
English (en)
Other versions
DE3687114T2 (de
Inventor
David Anthoney Fisher
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
Application granted granted Critical
Publication of DE3687114D1 publication Critical patent/DE3687114D1/de
Publication of DE3687114T2 publication Critical patent/DE3687114T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/08—Speed or phase control by synchronisation signals the synchronisation signals recurring cyclically
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L2007/047—Speed or phase control by synchronisation signals using special codes as synchronising signal using a sine signal or unmodulated carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Bidirectional Digital Transmission (AREA)
DE8686307780T 1985-11-20 1986-10-08 Datenuebertragungssystem. Expired - Fee Related DE3687114T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8526610A GB2182826B (en) 1985-11-20 1985-11-20 Data transmission system

Publications (2)

Publication Number Publication Date
DE3687114D1 true DE3687114D1 (de) 1992-12-17
DE3687114T2 DE3687114T2 (de) 1993-03-18

Family

ID=10587396

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686307780T Expired - Fee Related DE3687114T2 (de) 1985-11-20 1986-10-08 Datenuebertragungssystem.

Country Status (7)

Country Link
US (1) US4878232A (de)
EP (1) EP0228771B1 (de)
JP (1) JPH07114403B2 (de)
AT (1) ATE82452T1 (de)
DE (1) DE3687114T2 (de)
ES (1) ES2035820T3 (de)
GB (2) GB2182826B (de)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2518394B2 (ja) * 1989-05-24 1996-07-24 日本電気株式会社 エコ―キャンセラ方式全二重送受信回路
US5268930A (en) * 1991-12-19 1993-12-07 Novatel Communications Ltd. Decision feedback equalizer
US5537142A (en) 1993-10-20 1996-07-16 Videolan Technologies, Inc. Local area network for simultaneous, bi-directional transmission of video bandwidth signals, including a switching matrix which defines user connections, upstream connections, and downstream connections and has an efficient configuration to minimize the
US5473600A (en) * 1994-05-20 1995-12-05 Sierra Semiconductor Corporation Efficient data storage arrangement for far-end echo canceller
US5778028A (en) * 1994-06-13 1998-07-07 Zenith Electronics Corporation DC removal circuit for digital signal
FI97836C (fi) * 1994-10-31 1997-02-25 Nokia Telecommunications Oy Menetelmä tietoliikenneyhteyden muodostamiseksi
TW432855B (en) * 1996-04-25 2001-05-01 Mitsubishi Electric Corp Echo eliminator
JP3293742B2 (ja) * 1996-06-28 2002-06-17 日本電気株式会社 判定帰還型信号推定器
FI101919B (fi) * 1996-11-21 1998-09-15 Nokia Telecommunications Oy Menetelmä impulssivasteen laskemiseksi ja vastaanotin
US6236675B1 (en) * 1997-03-05 2001-05-22 Paradyne Corporation Pilot tone system and method to allow continuous synchronization in multipoint networks
US6928106B1 (en) * 1998-08-28 2005-08-09 Broadcom Corporation Phy control module for a multi-pair gigabit transceiver
KR20100034063A (ko) * 2000-01-25 2010-03-31 어웨어, 인크. Ａｄｓｌ 모뎀에서 에코 제거기를 갱신하기 위해 ｌｍｓ 방법을 이용하기 위한 시스템 및 방법
US7257220B1 (en) * 2000-12-29 2007-08-14 Cisco Technology, Inc. Method and system for providing extended reach of a digital subscriber line signal
US7170952B2 (en) 2001-07-02 2007-01-30 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in communications systems
US7095798B2 (en) 2001-08-02 2006-08-22 Powerwave Technologies, Inc. System and method for post filtering peak power reduction in multi-carrier communications systems
US6961373B2 (en) * 2002-07-01 2005-11-01 Solarflare Communications, Inc. Method and apparatus for channel equalization
US7809021B2 (en) 2002-07-10 2010-10-05 Solarflare Communications, Inc. Communication system and encoding method having low overhead
US7164764B2 (en) * 2002-11-07 2007-01-16 Solarflare Communications, Inc. Method and apparatus for precode crosstalk mitigation
US20040193970A1 (en) * 2003-03-31 2004-09-30 Casper Dietrich Receiver system with adjustable sampling and reference levels
US8363535B2 (en) 2003-04-28 2013-01-29 Marvell International Ltd. Frequency domain echo and next cancellation
US10735107B2 (en) 2005-06-15 2020-08-04 Wfs Technologies Ltd. Communications system
US7711322B2 (en) 2005-06-15 2010-05-04 Wireless Fibre Systems Underwater communications system and method
US11750300B2 (en) 2005-06-15 2023-09-05 CSignum Ltd. Mobile device underwater communications system and method
US8761387B2 (en) 2006-05-04 2014-06-24 Mindspeed Technologies, Inc. Analog transmit crosstalk canceller
US7720068B2 (en) 2006-08-23 2010-05-18 Solarflare Communications, Inc. Method and system for a multi-rate gigabit media independent interface
WO2009064439A2 (en) 2007-11-12 2009-05-22 Solarflare Communications, Inc. Active idle communication system
JP5353878B2 (ja) * 2008-03-11 2013-11-27 日本電気株式会社 波形等化回路および波形等化方法
TWI452854B (zh) * 2010-12-29 2014-09-11 Realtek Semiconductor Corp 可快速調整類比回音消除電路參數的通訊裝置和相關的回音消除方法
US8982711B2 (en) * 2012-04-20 2015-03-17 Allied Telesis Holdings Kabushiki Kaisha Self-healing communications network
GB201303328D0 (en) * 2013-02-25 2013-04-10 Wfs Technologies Ltd Underwater communication network
US9998278B2 (en) * 2015-09-07 2018-06-12 Rohde & Schwarz Gmbh & Co. Kg Method and apparatus for synchronization of a decoding unit
US11481224B2 (en) 2019-08-30 2022-10-25 Apple Inc. Digital filter with programmable impulse response for direct amplitude modulation at radio frequency
TWI788668B (zh) * 2020-05-25 2023-01-01 瑞昱半導體股份有限公司 回音抵消系統以及回音抵消方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292831A (de) * 1963-05-15 1965-07-26
IT1115559B (it) * 1978-08-29 1986-02-03 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la cancellazione numerica dell eco
GB2082025B (en) * 1980-08-12 1984-03-07 Standard Telephones Cables Ltd Clock extraction
GB2111354B (en) 1981-11-19 1985-06-19 Standard Telephones Cables Ltd Echo canceller
GB2161676B (en) * 1984-07-11 1988-05-25 Stc Plc Data transmission system

Also Published As

Publication number Publication date
GB2222926B (en) 1990-08-01
GB2222926A (en) 1990-03-21
DE3687114T2 (de) 1993-03-18
GB2182826B (en) 1990-08-01
GB8526610D0 (en) 1985-12-04
JPH07114403B2 (ja) 1995-12-06
EP0228771A2 (de) 1987-07-15
ATE82452T1 (de) 1992-11-15
US4878232A (en) 1989-10-31
GB2182826A (en) 1987-05-20
GB8921210D0 (en) 1989-11-08
EP0228771B1 (de) 1992-11-11
ES2035820T3 (es) 1993-05-01
JPS62128627A (ja) 1987-06-10
EP0228771A3 (en) 1988-10-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee