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AU2001231279A1 - Pcm modem adaptation system utilizing a silence period - Google Patents

Pcm modem adaptation system utilizing a silence period

Info

Publication number
AU2001231279A1
AU2001231279A1 AU2001231279A AU3127901A AU2001231279A1 AU 2001231279 A1 AU2001231279 A1 AU 2001231279A1 AU 2001231279 A AU2001231279 A AU 2001231279A AU 3127901 A AU3127901 A AU 3127901A AU 2001231279 A1 AU2001231279 A1 AU 2001231279A1
Authority
AU
Australia
Prior art keywords
system utilizing
silence period
adaptation system
pcm modem
modem adaptation
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.)
Abandoned
Application number
AU2001231279A
Inventor
Dae-Young Kim
Sepehr Mehrabanzad
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of AU2001231279A1 publication Critical patent/AU2001231279A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04L25/4917—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 multilevel codes
    • H04L25/4927—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 multilevel codes using levels matched to the quantisation levels of the channel
    • 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
    • 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
    • H04B3/234—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 double talk detection
    • 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
    • H04L25/0202—Channel estimation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Facsimile Transmission Control (AREA)
AU2001231279A 2000-02-03 2001-02-01 Pcm modem adaptation system utilizing a silence period Abandoned AU2001231279A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/496,754 US6408021B1 (en) 2000-02-03 2000-02-03 PCM modem adaptation system utilizing a silence period
US09496754 2000-02-03
PCT/US2001/003331 WO2001058032A1 (en) 2000-02-03 2001-02-01 Pcm modem adaptation system utilizing a silence period

Publications (1)

Publication Number Publication Date
AU2001231279A1 true AU2001231279A1 (en) 2001-08-14

Family

ID=23973983

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001231279A Abandoned AU2001231279A1 (en) 2000-02-03 2001-02-01 Pcm modem adaptation system utilizing a silence period

Country Status (8)

Country Link
US (1) US6408021B1 (en)
EP (1) EP1256180A4 (en)
JP (1) JP5337336B2 (en)
KR (1) KR100784654B1 (en)
CN (1) CN1227825C (en)
AU (1) AU2001231279A1 (en)
CA (1) CA2398484C (en)
WO (1) WO2001058032A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6594306B1 (en) * 1999-09-03 2003-07-15 Motorola, Inc. Method and apparatus for a start-up procedure for digital and analog modems utilizing pulse code modulation for data transmission
US7068780B1 (en) * 2000-08-30 2006-06-27 Conexant, Inc. Hybrid echo canceller
US10700736B2 (en) * 2017-03-28 2020-06-30 Maxlinear, Inc. Full duplex DOCSIS cable modem echo cancellation with training
US12375325B2 (en) * 2022-11-10 2025-07-29 Samsung Electronics Co., Ltd. Interference cancellation circuit and operating method thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906172A (en) * 1974-04-22 1975-09-16 Gen Electric Digital echo suppressor
JPH0712156B2 (en) * 1986-02-07 1995-02-08 沖電気工業株式会社 Transmission method
JPH0541679A (en) * 1991-08-05 1993-02-19 Oki Electric Ind Co Ltd Method for measuring bulk delay for echo canceller for modem
US6094422A (en) * 1994-02-09 2000-07-25 3Com Corporation Echo canceller touch-up period in an echo-cancelling modem
GB2288102B (en) 1994-03-23 1997-10-08 Motorola Ltd Mobile radio with transmit command control and mobile radio system
US5745564A (en) 1995-01-26 1998-04-28 Northern Telecom Limited Echo cancelling arrangement
JPH08265224A (en) * 1995-03-22 1996-10-11 Nec Corp Echo canceller
US5812537A (en) * 1995-09-29 1998-09-22 Paradyne Corporation Echo canceling method and apparatus for data over cellular
US5751796A (en) 1996-06-21 1998-05-12 Paradyne Corporation Rapid startup protocol for communication between a plurality of modems
BR9814510A (en) * 1997-12-29 2004-04-20 Motorola Inc System, device and method for transmitting upward pcm using an optimized transmission constellation
US6317419B1 (en) * 1998-06-10 2001-11-13 Conexant Systems, Inc. Method and apparatus for training an echo canceler in a PCM modem context

Also Published As

Publication number Publication date
EP1256180A1 (en) 2002-11-13
WO2001058032A1 (en) 2001-08-09
JP2003524326A (en) 2003-08-12
KR100784654B1 (en) 2007-12-12
CN1416621A (en) 2003-05-07
CA2398484A1 (en) 2001-08-09
CA2398484C (en) 2009-12-29
KR20020079829A (en) 2002-10-19
CN1227825C (en) 2005-11-16
JP5337336B2 (en) 2013-11-06
EP1256180A4 (en) 2009-03-25
US6408021B1 (en) 2002-06-18

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