GB2425027B - Likelihood detector for data-dependant correlated noise - Google Patents

Likelihood detector for data-dependant correlated noise

Info

Publication number
GB2425027B
GB2425027B GB0607061A GB0607061A GB2425027B GB 2425027 B GB2425027 B GB 2425027B GB 0607061 A GB0607061 A GB 0607061A GB 0607061 A GB0607061 A GB 0607061A GB 2425027 B GB2425027 B GB 2425027B
Authority
GB
United Kingdom
Prior art keywords
dependant
data
correlated noise
likelihood detector
likelihood
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
GB0607061A
Other versions
GB0607061D0 (en
GB2425027A (en
Inventor
Oleg Vitalievich Zaboronski
Robert Charles Jackson
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.)
Arithmatica Ltd
Original Assignee
Arithmatica Ltd
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 Arithmatica Ltd filed Critical Arithmatica Ltd
Publication of GB0607061D0 publication Critical patent/GB0607061D0/en
Publication of GB2425027A publication Critical patent/GB2425027A/en
Application granted granted Critical
Publication of GB2425027B publication Critical patent/GB2425027B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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
    • H03M13/395—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using a collapsed trellis, e.g. M-step algorithm, radix-n architectures with n>2
    • 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
    • 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
    • H03M13/6337—Error control coding in combination with channel estimation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1803—Error detection or correction; Testing, e.g. of drop-outs by redundancy in data representation
GB0607061A 2005-04-08 2006-04-07 Likelihood detector for data-dependant correlated noise Expired - Fee Related GB2425027B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66942905P 2005-04-08 2005-04-08

Publications (3)

Publication Number Publication Date
GB0607061D0 GB0607061D0 (en) 2006-05-17
GB2425027A GB2425027A (en) 2006-10-11
GB2425027B true GB2425027B (en) 2007-08-15

Family

ID=36539562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0607061A Expired - Fee Related GB2425027B (en) 2005-04-08 2006-04-07 Likelihood detector for data-dependant correlated noise

Country Status (1)

Country Link
GB (1) GB2425027B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7953187B2 (en) 2006-06-21 2011-05-31 Forte Design Systems Limited Likelihood detector apparatus and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6438180B1 (en) * 1997-05-09 2002-08-20 Carnegie Mellon University Soft and hard sequence detection in ISI memory channels
US20040268208A1 (en) * 2003-06-27 2004-12-30 Seagate Technology Llc Computation of branch metric values in a data detector
US20050180288A1 (en) * 2002-04-18 2005-08-18 Infineon Technologies North America Corp. Method and apparatus for calibrating data-dependent noise prediction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6438180B1 (en) * 1997-05-09 2002-08-20 Carnegie Mellon University Soft and hard sequence detection in ISI memory channels
US20050180288A1 (en) * 2002-04-18 2005-08-18 Infineon Technologies North America Corp. Method and apparatus for calibrating data-dependent noise prediction
US20040268208A1 (en) * 2003-06-27 2004-12-30 Seagate Technology Llc Computation of branch metric values in a data detector

Also Published As

Publication number Publication date
GB0607061D0 (en) 2006-05-17
GB2425027A (en) 2006-10-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20091105 AND 20091111

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150407