GB2354676B - Turbo equalization with a decision feedback equalizer - Google Patents

Turbo equalization with a decision feedback equalizer

Info

Publication number
GB2354676B
GB2354676B GB9922244A GB9922244A GB2354676B GB 2354676 B GB2354676 B GB 2354676B GB 9922244 A GB9922244 A GB 9922244A GB 9922244 A GB9922244 A GB 9922244A GB 2354676 B GB2354676 B GB 2354676B
Authority
GB
United Kingdom
Prior art keywords
decision feedback
feedback equalizer
turbo equalization
turbo
equalization
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 - Fee Related
Application number
GB9922244A
Other versions
GB2354676A (en
GB9922244D0 (en
Inventor
Carlo Luschi
Paul Edward Strauch
Magnus Sandell
Ran-Hong Yan
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.)
Nokia of America Corp
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Priority to GB9922244A priority Critical patent/GB2354676B/en
Publication of GB9922244D0 publication Critical patent/GB9922244D0/en
Publication of GB2354676A publication Critical patent/GB2354676A/en
Application granted granted Critical
Publication of GB2354676B publication Critical patent/GB2354676B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L1/0045—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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/6331—Error control coding in combination with equalisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6577—Representation or format of variables, register sizes or word-lengths and quantization
    • H03M13/658—Scaling by multiplication or division
    • 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
    • H04L25/03171—Arrangements involving maximum a posteriori probability [MAP] detection
    • 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
    • H04L1/0071—Use of interleaving
    • 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
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03401—PSK
    • H04L2025/03407—Continuous phase
    • 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
    • H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
    • 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03605—Block 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
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative 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
    • H04L2025/03777—Arrangements for removing intersymbol interference characterised by the signalling
    • H04L2025/03783—Details of reference signals
    • H04L2025/03796—Location of reference signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)
GB9922244A 1999-09-20 1999-09-20 Turbo equalization with a decision feedback equalizer Expired - Fee Related GB2354676B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9922244A GB2354676B (en) 1999-09-20 1999-09-20 Turbo equalization with a decision feedback equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9922244A GB2354676B (en) 1999-09-20 1999-09-20 Turbo equalization with a decision feedback equalizer

Publications (3)

Publication Number Publication Date
GB9922244D0 GB9922244D0 (en) 1999-11-17
GB2354676A GB2354676A (en) 2001-03-28
GB2354676B true GB2354676B (en) 2001-10-10

Family

ID=10861267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9922244A Expired - Fee Related GB2354676B (en) 1999-09-20 1999-09-20 Turbo equalization with a decision feedback equalizer

Country Status (1)

Country Link
GB (1) GB2354676B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8196000B2 (en) 2003-04-02 2012-06-05 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7016440B1 (en) * 2000-08-16 2006-03-21 The Board Of Trustees Of The University Of Illinois Iterative MMSE equalization-decoder soft information exchange decoding method and device
JP4490265B2 (en) * 2002-07-24 2010-06-23 ビーエイイー・システムズ・インフォメーション・アンド・エレクトロニック・システムズ・インテグレイション・インコーポレーテッド Co-channel interference receiver
US7231557B2 (en) * 2003-04-02 2007-06-12 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system
US7434145B2 (en) 2003-04-02 2008-10-07 Qualcomm Incorporated Extracting soft information in a block-coherent communication system
DE10348205B4 (en) * 2003-10-16 2005-10-27 Infineon Technologies Ag Method for channel estimation using different modulation methods within one signal interval
US20090238255A1 (en) * 2008-03-24 2009-09-24 Hong Kong Applied Science And Technology Research Institute Co, Ltd. Estimation of Error Propagation Probability to Improve Performance of Decision-Feedback Based Systems
CN101931593B (en) * 2009-06-18 2013-12-11 Tcl集团股份有限公司 Channel equalization method and device
PT107671B (en) * 2014-05-30 2020-03-30 Inst Superior Tecnico RECEIVER WITH EQUALIZATION AND ESTIMATION OF THE JOINT PHASE NOISE AND RESPECTIVE METHOD

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0948140A1 (en) * 1998-04-03 1999-10-06 Lucent Technologies Inc. Iterative demapping and decoding of multilevel modulated signal
EP0959580A1 (en) * 1998-05-19 1999-11-24 Lucent Technologies Inc. Iterative equaliser and decoder
GB2341296A (en) * 1998-09-04 2000-03-08 Siemens Ag A data detector comprising a channel estimator, an equaliser, and a data regenerator, with feedback

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0948140A1 (en) * 1998-04-03 1999-10-06 Lucent Technologies Inc. Iterative demapping and decoding of multilevel modulated signal
EP0959580A1 (en) * 1998-05-19 1999-11-24 Lucent Technologies Inc. Iterative equaliser and decoder
GB2341296A (en) * 1998-09-04 2000-03-08 Siemens Ag A data detector comprising a channel estimator, an equaliser, and a data regenerator, with feedback

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8196000B2 (en) 2003-04-02 2012-06-05 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system

Also Published As

Publication number Publication date
GB2354676A (en) 2001-03-28
GB9922244D0 (en) 1999-11-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080920