CA2320701A1 - Gigabit ethernet transceiver - Google Patents

Gigabit ethernet transceiver Download PDF

Info

Publication number
CA2320701A1
CA2320701A1 CA002320701A CA2320701A CA2320701A1 CA 2320701 A1 CA2320701 A1 CA 2320701A1 CA 002320701 A CA002320701 A CA 002320701A CA 2320701 A CA2320701 A CA 2320701A CA 2320701 A1 CA2320701 A1 CA 2320701A1
Authority
CA
Canada
Prior art keywords
twisted wire
receiver
wire pair
taps
transmitter
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.)
Granted
Application number
CA002320701A
Other languages
French (fr)
Other versions
CA2320701C (en
Inventor
Oscar E. Agazzi
John L. Creigh
Mehdi Hatamian
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.)
Broadcom Corp
Original Assignee
Individual
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 US09/037,328 external-priority patent/US6236645B1/en
Priority claimed from US09/078,466 external-priority patent/US6201796B1/en
Priority claimed from US09/078,993 external-priority patent/US6212225B1/en
Priority claimed from US09/143,476 external-priority patent/US6304598B1/en
Priority to CA002433110A priority Critical patent/CA2433110C/en
Priority to CA002433111A priority patent/CA2433111C/en
Application filed by Individual filed Critical Individual
Priority claimed from PCT/US1999/005145 external-priority patent/WO1999046867A1/en
Publication of CA2320701A1 publication Critical patent/CA2320701A1/en
Publication of CA2320701C publication Critical patent/CA2320701C/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/32—Reducing cross-talk, e.g. by compensating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/487—Testing crosstalk effects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Small-Scale Networks (AREA)
  • Dc Digital Transmission (AREA)

Abstract

A communication line having a plurality of twisted wire pairs, a plurality of transmitters (A, B, C, D, E, F, G, H), one transmitter at each end of each twisted wire pair and a plurality of receivers (A, B, C, D, E, F, G, H), one receiver at each end of each twisted wire pair, form part of a communications system having a prespecified threshold error.
Each receiver receives a combination signal including a direct signal from the transmitter at the opposite end of the twisted wire pair with which the receiver is associated and a plurality of noise signals.
A plurality of adaptive filters is responsive to the combination signal. Each adaptive filter has a plurality of taps each having a coefficient.
Each tap is switchable between an active and an inactive state. A control device provides for adjustment of the transfer function of at least one of the adaptive filters by selectively deactivating the taps while ensuring that the error of the communications system does not exceed the threshold error.
CA002320701A 1998-03-09 1999-03-08 Gigabit ethernet transceiver Expired - Fee Related CA2320701C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002433111A CA2433111C (en) 1998-03-09 1999-03-08 Apparatus and method for power dissipation reduction in a communication system
CA002433110A CA2433110C (en) 1998-03-09 1999-03-08 Startup protocol for a communication system

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US09/037,328 US6236645B1 (en) 1998-03-09 1998-03-09 Apparatus for, and method of, reducing noise in a communications system
US09/037,328 1998-03-09
US09/078,993 US6212225B1 (en) 1998-05-14 1998-05-14 Startup protocol for high throughput communications systems
US09/078,993 1998-05-14
US09/078,466 US6201796B1 (en) 1998-05-14 1998-05-14 Startup protocol for high throughput communications systems
US09/078,466 1998-05-14
US09/143,476 US6304598B1 (en) 1998-08-28 1998-08-28 Apparatus for, and method of, reducing power dissipation in a communications system
US09/143,476 1998-08-28
PCT/US1999/005145 WO1999046867A1 (en) 1998-03-09 1999-03-08 Gigabit ethernet transceiver

Related Child Applications (2)

Application Number Title Priority Date Filing Date
CA002433111A Division CA2433111C (en) 1998-03-09 1999-03-08 Apparatus and method for power dissipation reduction in a communication system
CA002433110A Division CA2433110C (en) 1998-03-09 1999-03-08 Startup protocol for a communication system

Publications (2)

Publication Number Publication Date
CA2320701A1 true CA2320701A1 (en) 1999-09-16
CA2320701C CA2320701C (en) 2004-05-25

Family

ID=27488439

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002320701A Expired - Fee Related CA2320701C (en) 1998-03-09 1999-03-08 Gigabit ethernet transceiver

Country Status (3)

Country Link
JP (2) JP4216812B2 (en)
AU (1) AU748582C (en)
CA (1) CA2320701C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9042211B2 (en) * 2009-12-17 2015-05-26 Ikanos Communications, Inc. Systems and methods of resource allocation for cancellation of crosstalk

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388092A (en) * 1989-06-27 1995-02-07 Nec Corporation Echo canceller for two-wire full duplex digital data transmission
US5539773A (en) * 1992-02-17 1996-07-23 Thomson Consumer Electronics S.A. Method and apparatus for ghost cancelling and/or equalizing

Also Published As

Publication number Publication date
JP2005184854A (en) 2005-07-07
JP4216812B2 (en) 2009-01-28
JP2005168047A (en) 2005-06-23
AU2993499A (en) 1999-09-27
CA2320701C (en) 2004-05-25
AU748582C (en) 2004-06-17
JP4216813B2 (en) 2009-01-28
AU748582B2 (en) 2002-06-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130308