AU2001280942A1 - Generation of a training sequence for pcm modems - Google Patents

Generation of a training sequence for pcm modems

Info

Publication number
AU2001280942A1
AU2001280942A1 AU2001280942A AU8094201A AU2001280942A1 AU 2001280942 A1 AU2001280942 A1 AU 2001280942A1 AU 2001280942 A AU2001280942 A AU 2001280942A AU 8094201 A AU8094201 A AU 8094201A AU 2001280942 A1 AU2001280942 A1 AU 2001280942A1
Authority
AU
Australia
Prior art keywords
generation
training sequence
pcm modems
modems
pcm
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
AU2001280942A
Inventor
Lijun Daniel Tan
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 AU2001280942A1 publication Critical patent/AU2001280942A1/en
Abandoned 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
AU2001280942A 2000-08-07 2001-08-01 Generation of a training sequence for pcm modems Abandoned AU2001280942A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09632890 2000-08-07
US09/632,890 US6785326B1 (en) 2000-08-07 2000-08-07 Method and apparatus for detecting and compensating digital losses in a communications network
US09/632,890 2000-08-07
PCT/US2001/024064 WO2002013475A2 (en) 2000-08-07 2001-08-01 Generation of a training sequence for pcm modems

Publications (1)

Publication Number Publication Date
AU2001280942A1 true AU2001280942A1 (en) 2002-02-18

Family

ID=24537382

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001280942A Abandoned AU2001280942A1 (en) 2000-08-07 2001-08-01 Generation of a training sequence for pcm modems

Country Status (7)

Country Link
US (1) US6785326B1 (en)
EP (1) EP1310071A2 (en)
JP (1) JP4809571B2 (en)
KR (1) KR100815068B1 (en)
CN (1) CN1197314C (en)
AU (1) AU2001280942A1 (en)
WO (1) WO2002013475A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7031400B2 (en) * 2001-03-30 2006-04-18 Texas Instruments Incorporated Method of selecting a PCM modem signal constellation in relation to channel impairments
CN101686065B (en) * 2008-09-24 2013-01-30 华为技术有限公司 Method and equipment for modulation and demodulation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394437A (en) 1992-10-20 1995-02-28 At&T Corp. High-speed modem synchronized to a remote CODEC
US6480549B1 (en) 1997-04-08 2002-11-12 Vocal Technologies, Ltd. Method for determining attenuation in a digital PCM channel
US5825823A (en) 1997-06-06 1998-10-20 General Datacomm, Inc. PCM channel diagnosis
US6332009B2 (en) * 1997-09-03 2001-12-18 Conexant Systems, Inc. Method and apparatus for generating a line impairment learning signal for a data communication system
EP0977410B1 (en) 1998-07-30 2003-02-19 Infineon Technologies AG Method for generating PCM code sets
US6052412A (en) 1998-10-30 2000-04-18 Tyco Electronics Corporation Codec supporting PCM modem communications over a universal digital loop carrier
US6178200B1 (en) 1999-01-28 2001-01-23 Pctel, Inc. Constellation design for a PCM modem
US6185249B1 (en) 1999-01-28 2001-02-06 Ic Tel Inc. Translation table design for a PCM modem
US6512787B1 (en) * 1999-04-23 2003-01-28 Pc-Tel, Inc. Digital impairment learning method and system
US6301296B1 (en) * 1999-06-24 2001-10-09 Cirrus Logic, Inc. Digital impairment learning sequence
JP4183942B2 (en) * 1999-07-27 2008-11-19 コネクサント システムズ， インコーポレイテッド Quick connection parameter communication

Also Published As

Publication number Publication date
JP4809571B2 (en) 2011-11-09
WO2002013475A2 (en) 2002-02-14
KR20030027012A (en) 2003-04-03
WO2002013475A3 (en) 2002-07-18
JP2004520729A (en) 2004-07-08
KR100815068B1 (en) 2008-03-20
US6785326B1 (en) 2004-08-31
CN1446422A (en) 2003-10-01
CN1197314C (en) 2005-04-13
EP1310071A2 (en) 2003-05-14

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