FR2648293B1 - Emetteur, recepteur et procede de telecommunication pour ameliorer le fonctionnement d'egaliseurs a retroaction dans des systemes de telecommunication utilisant une correction d'erreurs - Google Patents

Emetteur, recepteur et procede de telecommunication pour ameliorer le fonctionnement d'egaliseurs a retroaction dans des systemes de telecommunication utilisant une correction d'erreurs

Info

Publication number
FR2648293B1
FR2648293B1 FR9006704A FR9006704A FR2648293B1 FR 2648293 B1 FR2648293 B1 FR 2648293B1 FR 9006704 A FR9006704 A FR 9006704A FR 9006704 A FR9006704 A FR 9006704A FR 2648293 B1 FR2648293 B1 FR 2648293B1
Authority
FR
France
Prior art keywords
telecommunication
transmitter
receiver
improving
error correction
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
FR9006704A
Other languages
English (en)
Other versions
FR2648293A1 (fr
Inventor
Jin-Der-Wang
Werner Jean-Jacques
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of FR2648293A1 publication Critical patent/FR2648293A1/fr
Application granted granted Critical
Publication of FR2648293B1 publication Critical patent/FR2648293B1/fr
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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0066—Parallel concatenated codes
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/063—Setting decision thresholds using feedback techniques only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H04L27/3438—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying generalised cross constellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR9006704A 1989-06-09 1990-05-30 Emetteur, recepteur et procede de telecommunication pour ameliorer le fonctionnement d'egaliseurs a retroaction dans des systemes de telecommunication utilisant une correction d'erreurs Expired - Lifetime FR2648293B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/363,793 US5052000A (en) 1989-06-09 1989-06-09 Technique for improving the operation of decision feedback equalizers in communications systems utilizing error correction
SG26494A SG26494G (en) 1989-06-09 1994-02-21 Communication system, transmitter and receiver for use in a communication system, and method for recovering data in a communication system

Publications (2)

Publication Number Publication Date
FR2648293A1 FR2648293A1 (fr) 1990-12-14
FR2648293B1 true FR2648293B1 (fr) 1993-12-31

Family

ID=26663904

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9006704A Expired - Lifetime FR2648293B1 (fr) 1989-06-09 1990-05-30 Emetteur, recepteur et procede de telecommunication pour ameliorer le fonctionnement d'egaliseurs a retroaction dans des systemes de telecommunication utilisant une correction d'erreurs

Country Status (6)

Country Link
US (1) US5052000A (fr)
JP (1) JP2645432B2 (fr)
FR (1) FR2648293B1 (fr)
GB (1) GB2235112B (fr)
HK (1) HK105294A (fr)
SG (1) SG26494G (fr)

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Also Published As

Publication number Publication date
JP2645432B2 (ja) 1997-08-25
JPH0326134A (ja) 1991-02-04
FR2648293A1 (fr) 1990-12-14
SG26494G (en) 1995-03-17
US5052000A (en) 1991-09-24
GB9012238D0 (en) 1990-07-18
HK105294A (en) 1994-10-07
GB2235112B (en) 1993-11-03
GB2235112A (en) 1991-02-20

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