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WO2003019793A3 - Maximum likelihood detector - Google Patents

Maximum likelihood detector Download PDF

Info

Publication number
WO2003019793A3
WO2003019793A3 PCT/EP2002/009443 EP0209443W WO03019793A3 WO 2003019793 A3 WO2003019793 A3 WO 2003019793A3 EP 0209443 W EP0209443 W EP 0209443W WO 03019793 A3 WO03019793 A3 WO 03019793A3
Authority
WO
WIPO (PCT)
Prior art keywords
value
maximum likelihood
likelihood detector
signal
criti
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.)
Ceased
Application number
PCT/EP2002/009443
Other languages
French (fr)
Other versions
WO2003019793A2 (en
Inventor
Alexander Kravtchenko
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.)
Thomson Licensing SAS
Original Assignee
Thomson Licensing SAS
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 Thomson Licensing SAS filed Critical Thomson Licensing SAS
Priority to AU2002333689A priority Critical patent/AU2002333689A1/en
Publication of WO2003019793A2 publication Critical patent/WO2003019793A2/en
Publication of WO2003019793A3 publication Critical patent/WO2003019793A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H03M13/6343—Error control coding in combination with techniques for partial response channels, e.g. recording
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Error Detection And Correction (AREA)

Abstract

The present invention relates to a method and an apparatus to transform a signal received from a channel into a binary code sequence, and more particularly to a signal processing apparatus, which can perform the maximum likelihood detec-tion of the reproduced data from an optical disk.A new algorithm is used, which has shown to be both, more precise than the known solution and independent of signal amplitudes.This procedure has the advantage that no selective amplifi-cation is necessary for Maximum Likelihood Detection.The general idea of the invention is described as follows:- known algorithms only work properly if (value >1), but not if the (value <1)- according to the invention: in case that (value <1), in-vert conditions are required- this will lead to correct results for value ><1 and sometimes to a wrong 'first' result, which has no criti-cal influence.
PCT/EP2002/009443 2001-08-25 2002-08-23 Maximum likelihood detector Ceased WO2003019793A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002333689A AU2002333689A1 (en) 2001-08-25 2002-08-23 Maximum likelihood detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01120383.3 2001-08-25
EP01120383 2001-08-25

Publications (2)

Publication Number Publication Date
WO2003019793A2 WO2003019793A2 (en) 2003-03-06
WO2003019793A3 true WO2003019793A3 (en) 2003-08-28

Family

ID=8178417

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/009443 Ceased WO2003019793A2 (en) 2001-08-25 2002-08-23 Maximum likelihood detector

Country Status (2)

Country Link
AU (1) AU2002333689A1 (en)
WO (1) WO2003019793A2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111607A1 (en) * 1999-12-22 2001-06-27 Deutsche Thomson-Brandt Gmbh Method and apparatus to detect a signal received from a channel signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1111607A1 (en) * 1999-12-22 2001-06-27 Deutsche Thomson-Brandt Gmbh Method and apparatus to detect a signal received from a channel signal

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
J.W.M. BERGMANS: "Digital Baseband Transmission and Recording", 1996, KLUWER ACADEMIC PUBLISHERS, DORDRECHT NL, XP002238821 *
J.W.M.BERGMANS: "Solutions Manual to Accompany Digital Baseband Transmission and Recording", SOLUTIONS MANUAL, 9 September 1998 (1998-09-09), pages 61 - 62, XP002238820, Retrieved from the Internet <URL:http://www.wkap.nl/prod/a/solution_manual.pdf> [retrieved on 20030417] *
WOOD R W ET AL: "VITERBI DETECTION OF CLASS IV PARTIAL RESPONSE ON A MAGNETIC RECORDING CHANNEL", IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE INC. NEW YORK, US, vol. 34, no. 5, 1 May 1986 (1986-05-01), pages 454 - 461, XP000577357, ISSN: 0090-6778 *

Also Published As

Publication number Publication date
WO2003019793A2 (en) 2003-03-06
AU2002333689A1 (en) 2003-03-10

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