NO20004748L - Method of detecting digitally transmitted data - Google Patents

Method of detecting digitally transmitted data

Info

Publication number
NO20004748L
NO20004748L NO20004748A NO20004748A NO20004748L NO 20004748 L NO20004748 L NO 20004748L NO 20004748 A NO20004748 A NO 20004748A NO 20004748 A NO20004748 A NO 20004748A NO 20004748 L NO20004748 L NO 20004748L
Authority
NO
Norway
Prior art keywords
symbols
dfe circuit
phase
decoder
transmitted data
Prior art date
Application number
NO20004748A
Other languages
Norwegian (no)
Other versions
NO20004748D0 (en
Inventor
Uwe Dettmar
Hanspeter Widmer
James Aldis
Original Assignee
Ascom Powerline Comm Ag
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 Ascom Powerline Comm Ag filed Critical Ascom Powerline Comm Ag
Publication of NO20004748D0 publication Critical patent/NO20004748D0/en
Publication of NO20004748L publication Critical patent/NO20004748L/en

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
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H04L1/005—Iterative decoding, including iteration between signal detection and decoding 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
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
    • H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Artificial Intelligence (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
  • Circuits Of Receivers In General (AREA)
  • Error Detection And Correction (AREA)

Abstract

I den digitale del av en mottaker bearbeides symbolene i en første fase på kjent måte ved hjelp av en DFE-krets (tilbakemeldings-korreksjonsledd) og en dekoder (7). I en etterfølgende andre fase uttas symbolene på dekoderens (7) utgangsside og returneres til tilbakekoplingsfilteret (5), idet avgjøreren i DFE- kretsen er utkoplet. Med andre ord finner tilbakekoplingsprosessen ikke lenger sted innenfor DFE-kretsen, men inkluderer kanaldekoderen. I den andre fase utføres iterasjoner inntil et forutbestemt avbruddskriterium er blitt . oppfylt. De . returnerte symboler er generelt mer pålitelige enn de symboler som genereres av avgjøreren innenfor DFE-kretsen.In the digital part of a receiver, the symbols in a first phase are processed in a known manner by means of a DFE circuit (feedback correction link) and a decoder (7). In a subsequent second phase, the symbols on the output side of the decoder (7) are removed and returned to the feedback filter (5), with the decision in the DFE circuit being switched off. In other words, the feedback process no longer takes place within the DFE circuit, but includes the channel decoder. In the second phase, iterations are performed until a predetermined interruption criterion has become. fulfilled. They. Returned symbols are generally more reliable than the symbols generated by the decision maker within the DFE circuit.

NO20004748A 1998-03-25 2000-09-22 Method of detecting digitally transmitted data NO20004748L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP98810260A EP0946024A1 (en) 1998-03-25 1998-03-25 Decision feedback equalisation, in particular for data communication over powrr distribution networks
PCT/CH1999/000128 WO1999049631A1 (en) 1998-03-25 1999-03-25 Iterative equalization and decoding

Publications (2)

Publication Number Publication Date
NO20004748D0 NO20004748D0 (en) 2000-09-22
NO20004748L true NO20004748L (en) 2000-11-17

Family

ID=8236011

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20004748A NO20004748L (en) 1998-03-25 2000-09-22 Method of detecting digitally transmitted data

Country Status (7)

Country Link
EP (2) EP0946024A1 (en)
CN (1) CN1303559A (en)
AU (1) AU2710199A (en)
BR (1) BR9909663A (en)
HK (1) HK1039003A1 (en)
NO (1) NO20004748L (en)
WO (1) WO1999049631A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1065851A1 (en) * 1999-07-02 2001-01-03 Motorola, Inc. Decision feedback equaliser with reduced-state sequence estimation
US6307901B1 (en) * 2000-04-24 2001-10-23 Motorola, Inc. Turbo decoder with decision feedback equalization
US6584143B2 (en) * 2001-03-02 2003-06-24 Motorola, Inc. Method and apparatus for joint detection of a coded signal in a CDMA system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821289A (en) * 1987-12-21 1989-04-11 Cyclotomics, Inc. Multiple parallel channel equalization architecture
US5052000A (en) * 1989-06-09 1991-09-24 At&T Bell Laboratories Technique for improving the operation of decision feedback equalizers in communications systems utilizing error correction
US5056117A (en) * 1989-08-07 1991-10-08 At&T Bell Laboratories Decision feedback equalization with trellis coding
FR2730370B1 (en) * 1995-02-07 1997-04-25 France Telecom RECEIVING DEVICE FOR DIGITAL SIGNALS WITH ITERATIVE STRUCTURE, CORRESPONDING MODULE AND METHOD
FR2738967B1 (en) * 1995-09-15 1997-12-05 France Telecom ADAPTIVE EQUALIZATION DEVICE FOR DIGITAL COMMUNICATIONS SYSTEMS
US5872817A (en) * 1997-07-02 1999-02-16 Lucent Technologies Inc. Joint viterbi decoder and decision feedback equalizer

Also Published As

Publication number Publication date
CN1303559A (en) 2001-07-11
WO1999049631A1 (en) 1999-09-30
NO20004748D0 (en) 2000-09-22
AU2710199A (en) 1999-10-18
BR9909663A (en) 2001-09-11
EP0946024A1 (en) 1999-09-29
EP1066705A1 (en) 2001-01-10
HK1039003A1 (en) 2002-04-04

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