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DE69421963D1 - Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen - Google Patents

Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen

Info

Publication number
DE69421963D1
DE69421963D1 DE69421963T DE69421963T DE69421963D1 DE 69421963 D1 DE69421963 D1 DE 69421963D1 DE 69421963 T DE69421963 T DE 69421963T DE 69421963 T DE69421963 T DE 69421963T DE 69421963 D1 DE69421963 D1 DE 69421963D1
Authority
DE
Germany
Prior art keywords
generating reliability
postprocessing method
reliability symbols
symbols
postprocessing
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
DE69421963T
Other languages
English (en)
Other versions
DE69421963T2 (de
Inventor
Peter Hoeher
Nambirajan Seshadri
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
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Publication of DE69421963D1 publication Critical patent/DE69421963D1/de
Application granted granted Critical
Publication of DE69421963T2 publication Critical patent/DE69421963T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03M13/37—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
    • H03M13/4138—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors soft-output Viterbi algorithm based decoding, i.e. Viterbi decoding with weighted decisions
    • H03M13/4146—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors soft-output Viterbi algorithm based decoding, i.e. Viterbi decoding with weighted decisions soft-output Viterbi decoding according to Battail and Hagenauer in which the soft-output is determined using path metric differences along the maximum-likelihood path, i.e. "SOVA" 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
    • H03M13/37—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)
  • Error Detection And Correction (AREA)
  • Hardware Redundancy (AREA)
DE69421963T 1993-05-21 1994-05-11 Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen Expired - Lifetime DE69421963T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/065,296 US5457704A (en) 1993-05-21 1993-05-21 Post processing method and apparatus for symbol reliability generation

Publications (2)

Publication Number Publication Date
DE69421963D1 true DE69421963D1 (de) 2000-01-13
DE69421963T2 DE69421963T2 (de) 2000-07-13

Family

ID=22061713

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69421963T Expired - Lifetime DE69421963T2 (de) 1993-05-21 1994-05-11 Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen

Country Status (8)

Country Link
US (1) US5457704A (de)
EP (1) EP0625829B1 (de)
JP (1) JP3537183B2 (de)
AU (1) AU673251B2 (de)
DE (1) DE69421963T2 (de)
ES (1) ES2142375T3 (de)
HK (1) HK1003214A1 (de)
SG (1) SG43207A1 (de)

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US6175559B1 (en) * 1999-07-07 2001-01-16 Motorola, Inc. Method for generating preamble sequences in a code division multiple access system
US6115406A (en) * 1999-09-10 2000-09-05 Interdigital Technology Corporation Transmission using an antenna array in a CDMA communication system
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US7110923B2 (en) 1999-11-04 2006-09-19 Verticalband, Limited Fast, blind equalization techniques using reliable symbols
US7143013B2 (en) 1999-11-04 2006-11-28 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
US7085691B2 (en) * 1999-11-04 2006-08-01 Verticalband, Limited Reliable symbols as a means of improving the performance of information transmission systems
CN1235342C (zh) * 1999-12-24 2006-01-04 通信集合公司 级联式信道编码的方法和设备
US6769089B1 (en) * 1999-12-24 2004-07-27 Ensemble Communicatioins, Inc. Method and apparatus for concatenated channel coding in a data transmission system
US7356752B2 (en) 2000-03-14 2008-04-08 Comtech Telecommunications Corp. Enhanced turbo product codes
US20020026615A1 (en) 2000-04-04 2002-02-28 Hewitt Eric John Enhanced turbo product code decorder system
US20020034269A1 (en) * 2000-07-28 2002-03-21 Victor Demjanenko Use of soft-decision or sum-product inner coders to improve the performance of outer coders
AU2001286842A1 (en) * 2000-09-06 2002-03-22 Motorola, Inc. Soft-output error-trellis decoder for convolutional codes
AU2002211213A1 (en) * 2000-09-12 2002-03-26 Ericsson Inc. Method and apparatus for soft information generation in joint demodulation of co-channel signals
US6697985B1 (en) * 2000-10-04 2004-02-24 Actelis Networks Inc. Predictive forward error correction redundancy
US6944242B2 (en) 2001-01-04 2005-09-13 Comsys Communication & Signal Processing Ltd. Apparatus for and method of converting soft symbol information to soft bit information
US6731700B1 (en) 2001-01-04 2004-05-04 Comsys Communication & Signal Processing Ltd. Soft decision output generator
US6529559B2 (en) 2001-01-12 2003-03-04 Comsys Communication & Signal Processing Ltd. Reduced soft output information packet selection
US6980602B1 (en) 2001-01-31 2005-12-27 Comsys Communication & Signal Processing Ltd. Normalization of equalizer soft output for channels with varying noise power
US6901121B1 (en) 2001-02-20 2005-05-31 Comsys Communication & Signal Processing Ltd. Compensation of DC offset impairment in a communications receiver
US6977977B1 (en) 2001-02-20 2005-12-20 Comsys Communication & Signal Processing Ltd. Compensation of I/Q gain mismatch in a communications receiver
US6633856B2 (en) * 2001-06-15 2003-10-14 Flarion Technologies, Inc. Methods and apparatus for decoding LDPC codes
US7673223B2 (en) * 2001-06-15 2010-03-02 Qualcomm Incorporated Node processors for use in parity check decoders
US6938196B2 (en) * 2001-06-15 2005-08-30 Flarion Technologies, Inc. Node processors for use in parity check decoders
US6961888B2 (en) 2002-08-20 2005-11-01 Flarion Technologies, Inc. Methods and apparatus for encoding LDPC codes
US6901083B2 (en) * 2002-10-25 2005-05-31 Qualcomm, Incorporated Method and system for code combining at an outer decoder on a communication system
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US7047474B2 (en) * 2002-12-23 2006-05-16 Do-Jun Rhee Decoding concatenated codes via parity bit recycling
US20040157626A1 (en) * 2003-02-10 2004-08-12 Vincent Park Paging methods and apparatus
US6957375B2 (en) * 2003-02-26 2005-10-18 Flarion Technologies, Inc. Method and apparatus for performing low-density parity-check (LDPC) code operations using a multi-level permutation
US20070234178A1 (en) * 2003-02-26 2007-10-04 Qualcomm Incorporated Soft information scaling for interactive decoding
KR100959425B1 (ko) * 2003-02-26 2010-05-26 콸콤 인코포레이티드 반복 디코딩을 위한 소프트 정보 스케일링
US7822150B2 (en) * 2003-03-15 2010-10-26 Alcatel-Lucent Usa Inc. Spherical decoder for wireless communications
US8196000B2 (en) * 2003-04-02 2012-06-05 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system
US7231557B2 (en) * 2003-04-02 2007-06-12 Qualcomm Incorporated Methods and apparatus for interleaving in a block-coherent communication system
CN100461116C (zh) * 2003-04-02 2009-02-11 高通股份有限公司 用于在块相干通信系统中的交织的方法和设备
US7434145B2 (en) * 2003-04-02 2008-10-07 Qualcomm Incorporated Extracting soft information in a block-coherent communication system
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7237181B2 (en) 2003-12-22 2007-06-26 Qualcomm Incorporated Methods and apparatus for reducing error floors in message passing decoders
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
US7395490B2 (en) 2004-07-21 2008-07-01 Qualcomm Incorporated LDPC decoding methods and apparatus
US7346832B2 (en) 2004-07-21 2008-03-18 Qualcomm Incorporated LDPC encoding methods and apparatus
US7127659B2 (en) * 2004-08-02 2006-10-24 Qualcomm Incorporated Memory efficient LDPC decoding methods and apparatus
US8046662B2 (en) * 2004-08-20 2011-10-25 Broadcom Corporation Method and system for decoding control data in GSM-based systems using inherent redundancy
US7216267B2 (en) * 2004-09-13 2007-05-08 Conexant Systems Inc. Systems and methods for multistage signal detection in mimo transmissions and iterative detection of precoded OFDM
US7421643B2 (en) * 2005-01-04 2008-09-02 Agere Systems Inc. Data detection and decoding system and a method of detecting and decoding data
US7490284B2 (en) * 2005-02-03 2009-02-10 Broadcom Corporation Meta-Viterbi algorithm for use in communication systems
US7469373B2 (en) * 2005-02-17 2008-12-23 Broadcom Corporation Application of a Meta-Viterbi algorithm for communication systems without intersymbol interference
US7725800B2 (en) * 2005-08-05 2010-05-25 Hitachi Global Stroage Technologies Netherlands, B.V. Decoding techniques for correcting errors using soft information
US8687744B2 (en) * 2006-01-18 2014-04-01 Broadcom Corporation Method and system for an improved cellular diversity receiver
WO2009038408A2 (en) * 2007-09-21 2009-03-26 Lg Electronics Inc. Digital broadcasting system and data processing method
US20090132894A1 (en) * 2007-11-19 2009-05-21 Seagate Technology Llc Soft Output Bit Threshold Error Correction
US8127216B2 (en) * 2007-11-19 2012-02-28 Seagate Technology Llc Reduced state soft output processing
US20110004810A1 (en) * 2009-07-06 2011-01-06 Himax Media Solutions, Inc. Method and System of Receiving Data with Enhanced Error Correction
US8693897B2 (en) 2011-01-22 2014-04-08 Viasat, Inc. Digital demodulator architecture
US8744279B2 (en) * 2011-01-22 2014-06-03 Viasat, Inc. Adaptive PMD equalizer and implementation
CN106160725B (zh) * 2015-04-10 2019-08-23 扬智科技股份有限公司 输出电路与侦测负载是否连接于对应于输出电路的连接端口的方法
US10763808B2 (en) * 2018-10-01 2020-09-01 Keithley Instruments, Llc Source measure unit with guard drive circuit
US11368170B1 (en) * 2021-04-29 2022-06-21 Marvell Asia Pte, Ltd. Systems and methods for Nyquist error correction

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Also Published As

Publication number Publication date
JP3537183B2 (ja) 2004-06-14
EP0625829A3 (de) 1997-08-20
AU6321994A (en) 1994-11-24
US5457704A (en) 1995-10-10
EP0625829A2 (de) 1994-11-23
HK1003214A1 (en) 1998-10-16
ES2142375T3 (es) 2000-04-16
JPH0722968A (ja) 1995-01-24
EP0625829B1 (de) 1999-12-08
AU673251B2 (en) 1996-10-31
SG43207A1 (en) 1997-10-17
DE69421963T2 (de) 2000-07-13

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