MX9504288A - Montaje o disposicion de igualador hibrido para utilizarse en un equipo de comunicaciones de datos. - Google Patents

Montaje o disposicion de igualador hibrido para utilizarse en un equipo de comunicaciones de datos.

Info

Publication number
MX9504288A
MX9504288A MX9504288A MX9504288A MX9504288A MX 9504288 A MX9504288 A MX 9504288A MX 9504288 A MX9504288 A MX 9504288A MX 9504288 A MX9504288 A MX 9504288A MX 9504288 A MX9504288 A MX 9504288A
Authority
MX
Mexico
Prior art keywords
dfe
values
hybrid
transmitter
designed
Prior art date
Application number
MX9504288A
Other languages
English (en)
Inventor
Shlomo Gadot
Gi-Hong Im
Ehud Langberg
Jin-Der-Wang
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Publication of MX9504288A publication Critical patent/MX9504288A/es

Links

Classifications

    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03254—Operation with other circuitry for removing intersymbol interference
    • H04L25/03267—Operation with other circuitry for removing intersymbol interference with decision feedback equalisers
    • 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
    • H04L25/497—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 by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H04L25/4975—Correlative coding using Tomlinson precoding, Harashima precoding, Trellis precoding or GPRS
    • 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
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • 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
    • H04L25/38—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
    • H04L25/497—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 by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • 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
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/03503—Tapped delay lines time-recursive as a combination of feedback and prediction filters
    • 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
    • H04L2025/03808—Transmission of equaliser coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Se describe un tipo híbrido de la estructura de un igualador de retroalimentacion de decision (DFE) que se aproxima al DFE de funcionamiento optimo. El DFE híbrido incluye un DFE de interferencia intersímbolos (ISI-DFE) y un DFE predictor de ruido (NP-DFE). La estructura DFE híbrida está diseñada de tal manera que una forma de valores de derivacion domina sobre la otra. Esto permite que el transmisor utilice solamente los valores de derivacion dominantes durante la precodificacion y reduce la complejidad del transmisor. En particular, un DFE híbrido está diseñado de tal manera que los valores de coeficiente I(z) dominan sobre los valores del coeficiente N(z), donde la notacion I(z) y N(z), como se conoce en la técnica, representan los valores del coeficiente después de la adaptacion del ISI-DFE y el NP-DFE, respectivamente. Un esquema de precodificacion Tomlinson respectivo en el transmisor utiliza solamente los valores I(z). Ya que solamente los valores I(z) se utilizan en el precodificador del transmisor, el NP-DFE del receptor se mantiene activo durante la fase de comunicaciones. Convenientemente, el uso continuo del NP-DFE en el receptor permite que el receptor siga la pista de cambios pequeños en el canal.
MX9504288A 1994-10-13 1995-10-10 Montaje o disposicion de igualador hibrido para utilizarse en un equipo de comunicaciones de datos. MX9504288A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/322,877 US5513216A (en) 1994-10-13 1994-10-13 Hybrid equalizer arrangement for use in data communications equipment

Publications (1)

Publication Number Publication Date
MX9504288A true MX9504288A (es) 1997-01-31

Family

ID=23256834

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9504288A MX9504288A (es) 1994-10-13 1995-10-10 Montaje o disposicion de igualador hibrido para utilizarse en un equipo de comunicaciones de datos.

Country Status (9)

Country Link
US (1) US5513216A (es)
EP (1) EP0707400B1 (es)
JP (1) JPH08213935A (es)
KR (1) KR960016302A (es)
CN (1) CN1084994C (es)
CA (1) CA2158186C (es)
DE (1) DE69532371T2 (es)
IL (1) IL115587A (es)
MX (1) MX9504288A (es)

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Also Published As

Publication number Publication date
DE69532371D1 (de) 2004-02-05
CA2158186C (en) 2000-01-25
EP0707400A3 (en) 1998-01-28
CN1130830A (zh) 1996-09-11
JPH08213935A (ja) 1996-08-20
EP0707400A2 (en) 1996-04-17
IL115587A0 (en) 1996-01-19
US5513216A (en) 1996-04-30
KR960016302A (ko) 1996-05-22
EP0707400B1 (en) 2004-01-02
CN1084994C (zh) 2002-05-15
IL115587A (en) 2001-09-13
CA2158186A1 (en) 1996-04-14
DE69532371T2 (de) 2004-10-28

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Legal Events

Date Code Title Description
FG Grant or registration
HC Change of company name or juridical status

Owner name: BROOKTREE BROADBAND HOLDING, INC.

Owner name: N.V. ORGANON.*

PD Change of proprietorship

Owner name: BROOKTREE BROADBAND HOLDING, INC.

MM Annulment or lapse due to non-payment of fees