WO2002103949A3 - Digital subscriber line analog front end with adaptive hybrid - Google Patents

Digital subscriber line analog front end with adaptive hybrid Download PDF

Info

Publication number
WO2002103949A3
WO2002103949A3 PCT/US2002/013574 US0213574W WO02103949A3 WO 2002103949 A3 WO2002103949 A3 WO 2002103949A3 US 0213574 W US0213574 W US 0213574W WO 02103949 A3 WO02103949 A3 WO 02103949A3
Authority
WO
WIPO (PCT)
Prior art keywords
subscriber line
hybrid
analog front
data signal
input
Prior art date
Application number
PCT/US2002/013574
Other languages
French (fr)
Other versions
WO2002103949A2 (en
Inventor
Yan Zhou
Kim Fung Lee
Original Assignee
Silicon Lab 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
Priority claimed from US09/847,187 external-priority patent/US6895040B2/en
Priority claimed from US09/847,188 external-priority patent/US6944213B2/en
Application filed by Silicon Lab Inc filed Critical Silicon Lab Inc
Priority to KR10-2003-7014264A priority Critical patent/KR20030093338A/en
Priority to EP02780747A priority patent/EP1552640A2/en
Priority to AU2002347831A priority patent/AU2002347831A1/en
Publication of WO2002103949A2 publication Critical patent/WO2002103949A2/en
Publication of WO2002103949A3 publication Critical patent/WO2002103949A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0002—Modulated-carrier systems analog front ends; means for connecting modulators, demodulators or transceivers to a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • 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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

An analog front end for communicating discrete multitone modulated signals on a subscriber line includes a hybrid network (620) for eliminating near-end echos. The hybrid network includes a hybrid input, a receive input, and a hybrid output. The receive input is capacitively coupled to a subscriber line (290) carrying upstream and downstream data signals. The hybrid input is capacitively coupled to receive the upstream data signal from a driver (610) that also provides the upstream data signal to the subscriber line. The hybrid output provides the extracted downstream data signal from the subscriber line. The analog front end includes a power spectral density filter (340) and a high pass filter (320) that enable the use of a first order hybrid network for extracting the downstream data. The analog front end may include an additional analog channel to enable voiceband (e.g., v.90) communication concurrent with non-voiceband (e.g., xDSL) operation.
PCT/US2002/013574 2001-05-01 2002-05-01 Digital subscriber line analog front end with adaptive hybrid WO2002103949A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR10-2003-7014264A KR20030093338A (en) 2001-05-01 2002-05-01 Digital subscriber line analog front end with adaptive hybrid
EP02780747A EP1552640A2 (en) 2001-05-01 2002-05-01 Digital subscriber line analog front end with adaptive hybrid
AU2002347831A AU2002347831A1 (en) 2001-05-01 2002-05-01 Digital subscriber line analog front end with adaptive hybrid

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/847,187 US6895040B2 (en) 2001-05-01 2001-05-01 Architecture for a digital subscriber line analog front end
US09/847,188 US6944213B2 (en) 2001-05-01 2001-05-01 Adaptive hybrid for a digital subscriber line analog front end
US09/847,187 2001-05-01
US09/847,188 2001-05-01

Publications (2)

Publication Number Publication Date
WO2002103949A2 WO2002103949A2 (en) 2002-12-27
WO2002103949A3 true WO2002103949A3 (en) 2005-05-19

Family

ID=27126691

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/013574 WO2002103949A2 (en) 2001-05-01 2002-05-01 Digital subscriber line analog front end with adaptive hybrid

Country Status (4)

Country Link
EP (1) EP1552640A2 (en)
KR (1) KR20030093338A (en)
AU (1) AU2002347831A1 (en)
WO (1) WO2002103949A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6226331B1 (en) * 1998-11-12 2001-05-01 C. P. Clare Corporation Data access arrangement for a digital subscriber line
US6266367B1 (en) * 1998-05-28 2001-07-24 3Com Corporation Combined echo canceller and time domain equalizer
US6295343B1 (en) * 1999-07-13 2001-09-25 Catena Networks, Inc. Method and apparatus for combining voice line card and xDSL line card functions
US6477249B1 (en) * 1997-12-09 2002-11-05 Nortel Networks Limited Communications signal splitter and filter
US6498511B2 (en) * 2000-10-02 2002-12-24 Fujitsu Limited Receiver, hybrid circuit, driver circuit, and signal transmission system for bidirectional signal transmission for carrying out such signal transmission in both directions simultaneously

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6477249B1 (en) * 1997-12-09 2002-11-05 Nortel Networks Limited Communications signal splitter and filter
US6266367B1 (en) * 1998-05-28 2001-07-24 3Com Corporation Combined echo canceller and time domain equalizer
US6226331B1 (en) * 1998-11-12 2001-05-01 C. P. Clare Corporation Data access arrangement for a digital subscriber line
US6295343B1 (en) * 1999-07-13 2001-09-25 Catena Networks, Inc. Method and apparatus for combining voice line card and xDSL line card functions
US6498511B2 (en) * 2000-10-02 2002-12-24 Fujitsu Limited Receiver, hybrid circuit, driver circuit, and signal transmission system for bidirectional signal transmission for carrying out such signal transmission in both directions simultaneously

Also Published As

Publication number Publication date
AU2002347831A1 (en) 2003-01-02
KR20030093338A (en) 2003-12-06
WO2002103949A2 (en) 2002-12-27
EP1552640A2 (en) 2005-07-13

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