DE60041878D1 - Pcm-modem mit vorkodierung und vorentzerrung - Google Patents

Pcm-modem mit vorkodierung und vorentzerrung

Info

Publication number
DE60041878D1
DE60041878D1 DE60041878T DE60041878T DE60041878D1 DE 60041878 D1 DE60041878 D1 DE 60041878D1 DE 60041878 T DE60041878 T DE 60041878T DE 60041878 T DE60041878 T DE 60041878T DE 60041878 D1 DE60041878 D1 DE 60041878D1
Authority
DE
Germany
Prior art keywords
presencing
coding
pcm modem
pcm
modem
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 - Lifetime
Application number
DE60041878T
Other languages
English (en)
Inventor
Sverrir Olafsson
Olafur Jonsson
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.)
Mindspeed Technologies LLC
Original Assignee
Mindspeed Technologies LLC
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 Mindspeed Technologies LLC filed Critical Mindspeed Technologies LLC
Application granted granted Critical
Publication of DE60041878D1 publication Critical patent/DE60041878D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04L25/4917—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
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
    • H04L2025/03802—Signalling on the reverse channel

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DE60041878T 1999-09-10 2000-09-05 Pcm-modem mit vorkodierung und vorentzerrung Expired - Lifetime DE60041878D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/395,726 US6414989B1 (en) 1999-09-10 1999-09-10 Upstream PCM transmission for a modem system
PCT/US2000/024374 WO2001019045A1 (en) 1999-09-10 2000-09-05 Pcm modem with precoding and pre-equalisation

Publications (1)

Publication Number Publication Date
DE60041878D1 true DE60041878D1 (de) 2009-05-07

Family

ID=23564234

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60041878T Expired - Lifetime DE60041878D1 (de) 1999-09-10 2000-09-05 Pcm-modem mit vorkodierung und vorentzerrung

Country Status (4)

Country Link
US (1) US6414989B1 (de)
EP (1) EP1214820B1 (de)
DE (1) DE60041878D1 (de)
WO (1) WO2001019045A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001579A1 (de) * 1998-11-10 2000-05-17 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Bestimmung der Eigenschaften eines Übertragungskanals
US6650698B1 (en) * 1999-09-29 2003-11-18 Conexant Systems, Inc. Non-linear equalization for the upstream data connection of 56K PCM modems
US7079586B1 (en) * 2000-03-16 2006-07-18 Koninklijke Philips Electronics N.V. Systems and methods for optimal distribution of symbols in a fixed size data packet to improve receiver performance
US7177350B1 (en) * 2001-04-06 2007-02-13 Centillium Communications, Inc. Receiver transparent quiescent mode operation in a DSL transmission system
US20030194030A1 (en) * 2002-04-15 2003-10-16 Cory Samuel Modlin Power line interference compensation in PCM upstream transmissions
US8279783B1 (en) * 2005-08-12 2012-10-02 Aquantia Corporation Linear-equivalent echo and next cancellers for Tomlinson-Harashima Precoding (THP) systems
US7869496B1 (en) * 2008-02-04 2011-01-11 Mediatek Inc. ISI cancellation equalizer

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5105443A (en) * 1990-05-29 1992-04-14 At&T Bell Laboratories Inband coding of secondary data
CA2124376A1 (en) 1993-07-16 1995-01-17 William Lewis Betts Method and apparatus for encoding data for transfer over a communication channel
US5528625A (en) 1994-01-03 1996-06-18 At&T Corp. High speed quantization-level-sampling modem with equalization arrangement
CA2267362A1 (en) 1996-09-25 1998-04-02 Pierre A. Humblet Device, system and method for spectrally shaping transmitted data signals
US6198776B1 (en) 1996-11-13 2001-03-06 Motorola Inc. Device and method for precoding data signals for PCM transmission
AU5898098A (en) 1997-01-17 1998-08-07 Motorola, Inc. System and device for, and method of, communicating according to a composite code
US5831561A (en) 1997-04-29 1998-11-03 Lucent Technologies Inc. System and method for dynamically optimizing a symbol table and modem employing the same
US5887027A (en) 1997-12-24 1999-03-23 Lucent Technologies Inc. Method of upstream channel modeling for PCM modem
WO1999034566A1 (en) 1997-12-29 1999-07-08 Motorola Inc. System, device and method for pcm upstream transmission utilizing an optimized transmit constellation
US6201842B1 (en) 1997-12-29 2001-03-13 Motorola Inc. Device and method for detecting PCM upstream digital impairments in a communication network
US6034991A (en) 1998-01-26 2000-03-07 Conexant Systems, Inc. Method and apparatus for implementing enhanced multiple modulus conversion techniques in a signal point mapping context
US6516025B1 (en) 1999-04-29 2003-02-04 Texas Instruments Incorporated High-speed upstream modem communication

Also Published As

Publication number Publication date
EP1214820A1 (de) 2002-06-19
EP1214820B1 (de) 2009-03-25
US6414989B1 (en) 2002-07-02
WO2001019045A1 (en) 2001-03-15

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Legal Events

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8364 No opposition during term of opposition